#include <bits/stdc++.h>
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((int)(x).size())
using namespace std;
#ifdef LOCAL
template<typename A, typename B>
auto&operator<<(auto&o,pair<A, B>p){return o<<"("<<p.first<<", "<<p.second<<")";}
auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<&","[!i++]<<e;return o<<"}";}
#define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X)
#else
#define debug(...){}
#endif
using u16 = uint16_t;
using u32 = unsigned;
using i64 = long long;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<i64, i64>;
using vi = vector<int>;
using vll = vector<i64>;
inline u32 GetBit(u32 mask, int bit) {
return ((mask >> bit) & 1);
}
inline u32 SetBit(u32 mask, int bit) {
return mask | (1U << bit);
}
void PrintMaskBit(ostream &os, u32 mask, int nbits) {
for (int i = 0; i < nbits; ++i) {
os << GetBit(mask, i);
}
}
void PrintMaskTrit(ostream &os, u32 mask, int ntrits) {
for (int i = 0; i < ntrits; ++i) {
os << (mask % 3);
mask /= 3;
}
}
// const int N = 5;
// const int PWR3_N = 243;
const int N = 10;
const int PWR3_N = 59049;
const int NUM_WAYS_CUTOFF = 5'000;
const int MAX_ALLOW_OCCURS = 4;
const int NUM_SPLIT_PATTERNS = 1 << (N - 1);
const i64 RANDOM_SHIFT = 12211612983145995LL;
const i64 SHIFT_MOD = 30000000000000100LL;
i64 binom[N + 1][N + 1];
i64 fact[N + 1];
u16 trits_bits_add[PWR3_N][1 << N];
u16 trit_extract[PWR3_N][3];
u16 to_trit_base[1 << N];
// num_combinations[mask popcount][num masks][sum of masks mod 3]
i64 num_combinations[N + 1][N + 1][PWR3_N];
struct SplitTransition {
int trits;
int new_pattern;
};
// split_transitions[split_patterns] = vec of {legal trits, resulting new split pattern}
vector<SplitTransition> split_transitions[NUM_SPLIT_PATTERNS];
// reachability_paths[max mask popcount][used rows so far][split pattern]
i64 reachability_paths[N + 1][N + 1][NUM_SPLIT_PATTERNS];
void Preproc() {
for (int r = 1; r <= N; ++r) {
binom[r][0] = 1;
for (int c = 1; c <= r; ++c) {
binom[r][c] = binom[r - 1][c - 1] + binom[r - 1][c];
}
}
fact[0] = 1;
for (int r = 1; r <= N; ++r) {
fact[r] = fact[r - 1] * r;
}
for (int tmask = 0; tmask < PWR3_N; ++tmask) {
int tmask_copy = tmask;
for (int b = 0; b < N; ++b) {
const int trit = tmask_copy % 3;
tmask_copy /= 3;
trit_extract[tmask][trit] |= (1 << b);
}
}
for (int bmask = 0; bmask < (1 << N); ++bmask) {
int tmask = 0, coef = 1;
for (int b = 0; b < N; ++b) {
tmask += ((bmask >> b) & 1) * coef;
coef *= 3;
}
to_trit_base[bmask] = tmask;
}
for (int tmask = 0; tmask < PWR3_N; ++tmask) {
const int zero_bmask = trit_extract[tmask][0];
const int one_bmask = trit_extract[tmask][1];
const int two_bmask = trit_extract[tmask][2];
for (int add_bmask = 0; add_bmask < (1 << N); ++add_bmask) {
// const int new_zero = (two_bmask & add_bmask) | (zero_bmask & (~add_bmask));
const int new_one = (zero_bmask & add_bmask) | (one_bmask & (~add_bmask));
const int new_two = (one_bmask & add_bmask) | (two_bmask & (~add_bmask));
const int new_tmask = to_trit_base[new_one] + to_trit_base[new_two] * 2;
trits_bits_add[tmask][add_bmask] = new_tmask;
}
}
for (int used_popcount = 0; used_popcount <= N; ++used_popcount) {
vi bmasks;
for (int bmask = 0; bmask < (1 << N); ++bmask) {
if (__builtin_popcount(bmask) == used_popcount) {
bmasks.push_back(bmask);
}
}
num_combinations[used_popcount][0][0] = 1;
for (int cnt = 0; cnt < MAX_ALLOW_OCCURS; ++cnt) {
for (int prev_tmask = 0; prev_tmask < PWR3_N; ++prev_tmask) {
for (int new_bmask : bmasks) {
const int new_tmask = trits_bits_add[prev_tmask][new_bmask];
num_combinations[used_popcount][cnt + 1][new_tmask] +=
num_combinations[used_popcount][cnt][prev_tmask];
}
}
}
}
for (int split_ptn = 0; split_ptn < NUM_SPLIT_PATTERNS; ++split_ptn) {
for (int tmask = 0; tmask < PWR3_N; ++tmask) {
// Within each block, trits in tmask must be sorted
int new_split_ptn = split_ptn;
bool ok = true;
int prevt = 0;
int copy_tmask = tmask;
for (int b = 0; b < N; ++b) {
const int curt = copy_tmask % 3;
copy_tmask /= 3;
if (b && !GetBit(split_ptn, b - 1) && curt < prevt) {
ok = false;
break;
}
if (b && curt != prevt) {
new_split_ptn = SetBit(new_split_ptn, b - 1);
}
prevt = curt;
}
if (ok) {
// cerr << "split_ptn="; PrintMaskBit(cerr, split_ptn, N - 1); cerr << ", ";
// cerr << "trits="; PrintMaskTrit(cerr, tmask, N); cerr << " => ";
// cerr << "new_ptn="; PrintMaskBit(cerr, new_split_ptn, N - 1); cerr << "\n";
split_transitions[split_ptn].push_back({
.trits = tmask,
.new_pattern = new_split_ptn});
}
}
}
cerr << "start dp\n";
// reachability_paths[N][N][NUM_SPLIT_PATTERNS - 1] = 1;
// for (int popcnt = N - 1; popcnt >= 0; --popcnt) {
// for (int prevtotal = 0; prevtotal <= N; ++prevtotal) {
// for (int nexttotal = prevtotal; nexttotal <= N; ++nexttotal) {
// const int blksize = nexttotal - prevtotal;
// if (blksize > MAX_ALLOW_OCCURS) { continue; }
// if (blksize > min(popcnt, N - popcnt)) { continue; } // heura
// for (int prev_ptn = 0; prev_ptn < NUM_SPLIT_PATTERNS; ++prev_ptn) {
// for (const auto &trans : split_transitions[prev_ptn]) {
// const int tmask = trans.trits;
// const i64 num_ways = num_combinations[popcnt][blksize][tmask] / fact[blksize];
// if (!num_ways) { continue; }
// if (num_ways > NUM_WAYS_CUTOFF) { continue; } // heura
// const int next_ptn = trans.new_pattern;
// reachability_paths[popcnt][prevtotal][prev_ptn] += (
// num_ways * reachability_paths[popcnt + 1][nexttotal][next_ptn]);
// }
// }
// }
// }
// }
reachability_paths[N][N][NUM_SPLIT_PATTERNS - 1] = 1;
for (int popcnt = N - 1; popcnt >= 0; --popcnt) {
for (int blksize = 0; blksize <= N; ++blksize) {
if (blksize > MAX_ALLOW_OCCURS) { continue; }
if (blksize > min(popcnt, N - popcnt)) { continue; } // heura
for (int prev_ptn = 0; prev_ptn < NUM_SPLIT_PATTERNS; ++prev_ptn) {
for (const auto &trans : split_transitions[prev_ptn]) {
const int tmask = trans.trits;
const i64 num_ways = num_combinations[popcnt][blksize][tmask] / fact[blksize];
if (!num_ways) { continue; }
if (num_ways > NUM_WAYS_CUTOFF) { continue; } // heura
const int next_ptn = trans.new_pattern;
for (int prevtotal = 0; prevtotal <= N - blksize; ++prevtotal) {
const int nexttotal = prevtotal + blksize;
// TODO verify overflows??
reachability_paths[popcnt][prevtotal][prev_ptn] += (
num_ways * reachability_paths[popcnt + 1][nexttotal][next_ptn]);
}
}
}
}
// for (int prevtotal = 0; prevtotal <= N; ++prevtotal) {
// for (int prev_ptn = 0; prev_ptn < NUM_SPLIT_PATTERNS; ++prev_ptn) {
// auto &x = reachability_paths[popcnt][prevtotal][prev_ptn];
// if (x > 1e17) {
// debug(popcnt, prevtotal, prev_ptn, x);
// x = min<i64>(x, 1e17);
// }
// // assert(x <= 1e16);
// }
// }
}
cerr << reachability_paths[0][0][0] << "\n";
}
vector<vi> GetRowWays(int popcnt, int num_rows, int tmask) {
// vi GetRows(int popcnt, int num_rows, int tmask, int tup_idx) {
debug(popcnt, num_rows, tmask); //, tup_idx);
if (num_rows == 0) {
assert(tmask == 0);
// assert(tup_idx == 0);
return {vi{}};
}
vi avail_bmasks;
for (int bmask = 0; bmask < (1 << N); ++bmask) {
if (__builtin_popcount(bmask) == popcnt) {
avail_bmasks.push_back(bmask);
}
}
vector<vi> result;
// int num_found = 0;
vi cur_rows;
function<void(int, int)> Bt = [&](int bidx, int cur_tmask) {
if (SZ(cur_rows) == num_rows - 1) {
if (trit_extract[cur_tmask][1]) { return; }
const int twos_cand = trit_extract[cur_tmask][2];
if (__builtin_popcount(twos_cand) != popcnt) { return; }
cur_rows.push_back(twos_cand);
if (is_sorted(ALL(cur_rows))) {
result.push_back(cur_rows);
}
cur_rows.pop_back();
return;
}
while (bidx < SZ(avail_bmasks)) {
const int bmask = avail_bmasks[bidx];
cur_rows.push_back(bmask);
Bt(bidx, trits_bits_add[cur_tmask][bmask]);
// if (Bt(bidx, trits_bits_add[cur_tmask][bmask])) {
// return true;
// }
cur_rows.pop_back();
++bidx;
}
// return false;
};
const int rev_tmask = (
to_trit_base[trit_extract[tmask][1]] * 2 + to_trit_base[trit_extract[tmask][2]]);
// const bool ans = Bt(0, rev_tmask);
Bt(0, rev_tmask);
return result;
// assert(SZ(ans));
// return cur_rows;
}
vi MakeMatrix(i64 matrix_idx) {
debug(matrix_idx);
assert(matrix_idx < reachability_paths[0][0][0]);
int cur_popcnt = 0;
int cur_total = 0;
int cur_ptn = 0;
vi matrix;
while (cur_popcnt < N) {
assert(matrix_idx < reachability_paths[cur_popcnt][cur_total][cur_ptn]);
bool found = false;
int found_total;
SplitTransition found_trans;
i64 amount_skipped = 0;
for (int nexttotal = cur_total; !found && nexttotal <= N; ++nexttotal) {
const int blksize = nexttotal - cur_total;
if (blksize > MAX_ALLOW_OCCURS) { continue; }
if (blksize > min(cur_popcnt, N - cur_popcnt)) { continue; } // heura
for (const auto &trans : split_transitions[cur_ptn]) {
const int tmask = trans.trits;
const i64 num_ways = num_combinations[cur_popcnt][blksize][tmask] / fact[blksize];
if (!num_ways) { continue; }
const int next_ptn = trans.new_pattern;
const i64 paths_offered = num_ways * reachability_paths[cur_popcnt + 1][nexttotal][next_ptn];
if (paths_offered <= matrix_idx) {
// debug("encode skip", nexttotal, trans.trits, trans.new_pattern, paths_offered);
matrix_idx -= paths_offered;
amount_skipped += paths_offered;
} else {
found = true;
found_total = nexttotal;
found_trans = trans;
break;
}
}
}
assert(found);
debug(amount_skipped);
const int blksize = found_total - cur_total;
const int tmask = found_trans.trits;
const i64 num_ways = num_combinations[cur_popcnt][blksize][tmask] / fact[blksize];
debug(cur_popcnt, cur_ptn, blksize, tmask, matrix_idx, matrix_idx % num_ways);
#ifdef LOCAL
PrintMaskTrit(cerr, tmask, N); cerr << "\n";
#endif
const auto row_opts = GetRowWays(cur_popcnt, blksize, tmask);
debug(num_ways, SZ(row_opts));
assert(SZ(row_opts) >= num_ways);
for (auto row : row_opts[matrix_idx % num_ways]) {
matrix.push_back(row);
}
matrix_idx /= num_ways;
++cur_popcnt;
cur_total = found_total;
cur_ptn = found_trans.new_pattern;
debug(matrix_idx);
}
#ifdef LOCAL
for (auto row : matrix) {
PrintMaskBit(cerr, row, N); cerr << "\n";
}
#endif
debug("Final idx", matrix_idx);
return matrix;
}
mt19937 gen(time(NULL));
vi ShuffleMatrix(const vi &A) {
vi ans(N);
vi permcol(N), permrow(N);
iota(ALL(permcol), 0);
iota(ALL(permrow), 0);
shuffle(ALL(permcol), gen);
shuffle(ALL(permrow), gen);
for (int i = 0; i < N; ++i) {
for (int j = 0; j < N; ++j) {
const int pi = permrow[i];
const int pj = permcol[j];
ans[i] |= ((A[pi] >> pj) & 1) << j;
}
}
return ans;
}
i64 DecodeMatrix(vi A) {
auto FixColumns = [&]() {
vi trits_by_cnt(N);
for (int row : A) {
const int cnt = __builtin_popcount(row);
assert(cnt < N);
int &dest = trits_by_cnt[cnt];
dest = trits_bits_add[dest][row];
}
vector<string> cnt_trit_matrix(N, string(N, '.'));
for (int i = 0; i < N; ++i) {
int val = trits_by_cnt[i];
for (int j = 0; j < N; ++j) {
cnt_trit_matrix[i][j] = '0' + val % 3;
val /= 3;
}
}
vi column_order(N);
iota(ALL(column_order), 0);
sort(ALL(column_order), [&](int lhs, int rhs) {
for (int r = 0; r < N; ++r) {
if (cnt_trit_matrix[r][lhs] != cnt_trit_matrix[r][rhs]) {
return cnt_trit_matrix[r][lhs] < cnt_trit_matrix[r][rhs];
}
}
assert(false);
});
#ifdef LOCAL
for (int i = 0; i < N; ++i) {
PrintMaskTrit(cerr, trits_by_cnt[i], N); cerr << "\n";
}
#endif
debug(column_order);
for (int &row : A) {
int new_row = 0;
for (int i = 0; i < N; ++i) {
if (GetBit(row, column_order[i])) {
new_row = SetBit(new_row, i);
}
}
row = new_row;
}
};
auto FixRows = [&]() {
sort(ALL(A), [](int lhs, int rhs) {
return pii{__builtin_popcount(lhs), lhs} < pii{__builtin_popcount(rhs), rhs};
});
};
FixColumns();
FixRows();
#ifdef LOCAL
for (int i = 0; i < N; ++i) {
PrintMaskBit(cerr, A[i], N); cerr << "\n";
}
#endif
int cur_total = 0;
int cur_ptn = 0;
vll amount_skipped(N);
vll value_div(N);
vll value_mod(N);
for (int popcnt = 0; popcnt < N; ++popcnt) {
int next_total = cur_total;
while (next_total < N && __builtin_popcount(A[next_total]) == popcnt) {
++next_total;
}
const int blksize = next_total - cur_total;
int next_ptn = cur_ptn;
vi col_sums(N);
for (int r = cur_total; r < next_total; ++r) {
for (int c = 0; c < N; ++c) {
col_sums[c] += GetBit(A[r], c);
}
}
for (int c = 0; c < N - 1; ++c) {
if (col_sums[c] % 3 != col_sums[c + 1] % 3) {
next_ptn = SetBit(next_ptn, c);
}
}
int tmask = 0;
{
int coef = 1;
for (int c = 0; c < N; ++c) {
tmask += coef * (col_sums[c] % 3);
coef *= 3;
}
}
debug(tmask);
debug(popcnt, blksize, next_ptn);
bool found = false;
for (int skipnexttotal = cur_total; !found && skipnexttotal <= N; ++skipnexttotal) {
const int skipblksize = skipnexttotal - cur_total;
if (skipblksize > MAX_ALLOW_OCCURS) { continue; }
if (skipblksize > min(popcnt, N - popcnt)) { continue; } // heura
for (const auto &trans : split_transitions[cur_ptn]) {
const int skiptmask = trans.trits;
const i64 num_ways = num_combinations[popcnt][skipblksize][skiptmask] / fact[skipblksize];
if (!num_ways) { continue; }
const int skipnext_ptn = trans.new_pattern;
const i64 paths_offered = num_ways * reachability_paths[popcnt + 1][skipnexttotal][skipnext_ptn];
if (skipnexttotal == next_total && skiptmask == tmask && skipnext_ptn == next_ptn) {
found = true;
break;
} else {
// debug("decode skip", skipnexttotal, trans.trits, trans.new_pattern, paths_offered);
amount_skipped[popcnt] += paths_offered;
}
}
}
const auto row_opts = GetRowWays(popcnt, blksize, tmask);
const i64 num_ways = num_combinations[popcnt][blksize][tmask] / fact[blksize];
assert(SZ(row_opts) >= num_ways);
const auto iter = find(ALL(row_opts), vi(A.begin() + cur_total, A.begin() + next_total));
assert(iter != row_opts.end());
const int iter_idx = iter - row_opts.begin();
assert(iter_idx < num_ways);
debug(iter_idx, num_ways);
value_div[popcnt] = num_ways;
value_mod[popcnt] = iter_idx;
cur_total = next_total;
cur_ptn = next_ptn;
}
i64 matrix_idx = 0;
for (int popcnt = N - 1; popcnt >= 0; --popcnt) {
debug(popcnt, amount_skipped[popcnt], value_div[popcnt], value_mod[popcnt]);
matrix_idx *= value_div[popcnt];
matrix_idx += value_mod[popcnt];
matrix_idx += amount_skipped[popcnt];
debug(popcnt, matrix_idx);
}
return matrix_idx;
}
void TestEncoder() {
i64 val;
cin >> val;
val = (val + RANDOM_SHIFT) % SHIFT_MOD;
vi X = MakeMatrix(val);
assert(SZ(X) == N);
for (auto row : X) {
for (int c = 0; c < N; ++c) {
cout << GetBit(row, c);
}
cout << "\n";
}
cout << flush;
}
void TestDecoder() {
vi X(N);
for (int r = 0; r < N; ++r) {
string s;
cin >> s;
for (int c = 0; c < N; ++c) {
if (s[c] == '1') {
X[r] = SetBit(X[r], c);
}
}
}
i64 val = DecodeMatrix(X);
val = (val + SHIFT_MOD - RANDOM_SHIFT) % SHIFT_MOD;
cout << val << endl;
}
int main() {
Preproc();
string agent;
cin >> agent;
ll n, t;
cin >> n >> t;
for (int tidx = 0; tidx < t; ++tidx) {
if (agent == "Algosia") {
TestEncoder();
} else {
TestDecoder();
}
}
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 | #include <bits/stdc++.h> #define ALL(x) (x).begin(), (x).end() #define SZ(x) ((int)(x).size()) using namespace std; #ifdef LOCAL template<typename A, typename B> auto&operator<<(auto&o,pair<A, B>p){return o<<"("<<p.first<<", "<<p.second<<")";} auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<&","[!i++]<<e;return o<<"}";} #define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X) #else #define debug(...){} #endif using u16 = uint16_t; using u32 = unsigned; using i64 = long long; using ll = long long; using pii = pair<int, int>; using pll = pair<i64, i64>; using vi = vector<int>; using vll = vector<i64>; inline u32 GetBit(u32 mask, int bit) { return ((mask >> bit) & 1); } inline u32 SetBit(u32 mask, int bit) { return mask | (1U << bit); } void PrintMaskBit(ostream &os, u32 mask, int nbits) { for (int i = 0; i < nbits; ++i) { os << GetBit(mask, i); } } void PrintMaskTrit(ostream &os, u32 mask, int ntrits) { for (int i = 0; i < ntrits; ++i) { os << (mask % 3); mask /= 3; } } // const int N = 5; // const int PWR3_N = 243; const int N = 10; const int PWR3_N = 59049; const int NUM_WAYS_CUTOFF = 5'000; const int MAX_ALLOW_OCCURS = 4; const int NUM_SPLIT_PATTERNS = 1 << (N - 1); const i64 RANDOM_SHIFT = 12211612983145995LL; const i64 SHIFT_MOD = 30000000000000100LL; i64 binom[N + 1][N + 1]; i64 fact[N + 1]; u16 trits_bits_add[PWR3_N][1 << N]; u16 trit_extract[PWR3_N][3]; u16 to_trit_base[1 << N]; // num_combinations[mask popcount][num masks][sum of masks mod 3] i64 num_combinations[N + 1][N + 1][PWR3_N]; struct SplitTransition { int trits; int new_pattern; }; // split_transitions[split_patterns] = vec of {legal trits, resulting new split pattern} vector<SplitTransition> split_transitions[NUM_SPLIT_PATTERNS]; // reachability_paths[max mask popcount][used rows so far][split pattern] i64 reachability_paths[N + 1][N + 1][NUM_SPLIT_PATTERNS]; void Preproc() { for (int r = 1; r <= N; ++r) { binom[r][0] = 1; for (int c = 1; c <= r; ++c) { binom[r][c] = binom[r - 1][c - 1] + binom[r - 1][c]; } } fact[0] = 1; for (int r = 1; r <= N; ++r) { fact[r] = fact[r - 1] * r; } for (int tmask = 0; tmask < PWR3_N; ++tmask) { int tmask_copy = tmask; for (int b = 0; b < N; ++b) { const int trit = tmask_copy % 3; tmask_copy /= 3; trit_extract[tmask][trit] |= (1 << b); } } for (int bmask = 0; bmask < (1 << N); ++bmask) { int tmask = 0, coef = 1; for (int b = 0; b < N; ++b) { tmask += ((bmask >> b) & 1) * coef; coef *= 3; } to_trit_base[bmask] = tmask; } for (int tmask = 0; tmask < PWR3_N; ++tmask) { const int zero_bmask = trit_extract[tmask][0]; const int one_bmask = trit_extract[tmask][1]; const int two_bmask = trit_extract[tmask][2]; for (int add_bmask = 0; add_bmask < (1 << N); ++add_bmask) { // const int new_zero = (two_bmask & add_bmask) | (zero_bmask & (~add_bmask)); const int new_one = (zero_bmask & add_bmask) | (one_bmask & (~add_bmask)); const int new_two = (one_bmask & add_bmask) | (two_bmask & (~add_bmask)); const int new_tmask = to_trit_base[new_one] + to_trit_base[new_two] * 2; trits_bits_add[tmask][add_bmask] = new_tmask; } } for (int used_popcount = 0; used_popcount <= N; ++used_popcount) { vi bmasks; for (int bmask = 0; bmask < (1 << N); ++bmask) { if (__builtin_popcount(bmask) == used_popcount) { bmasks.push_back(bmask); } } num_combinations[used_popcount][0][0] = 1; for (int cnt = 0; cnt < MAX_ALLOW_OCCURS; ++cnt) { for (int prev_tmask = 0; prev_tmask < PWR3_N; ++prev_tmask) { for (int new_bmask : bmasks) { const int new_tmask = trits_bits_add[prev_tmask][new_bmask]; num_combinations[used_popcount][cnt + 1][new_tmask] += num_combinations[used_popcount][cnt][prev_tmask]; } } } } for (int split_ptn = 0; split_ptn < NUM_SPLIT_PATTERNS; ++split_ptn) { for (int tmask = 0; tmask < PWR3_N; ++tmask) { // Within each block, trits in tmask must be sorted int new_split_ptn = split_ptn; bool ok = true; int prevt = 0; int copy_tmask = tmask; for (int b = 0; b < N; ++b) { const int curt = copy_tmask % 3; copy_tmask /= 3; if (b && !GetBit(split_ptn, b - 1) && curt < prevt) { ok = false; break; } if (b && curt != prevt) { new_split_ptn = SetBit(new_split_ptn, b - 1); } prevt = curt; } if (ok) { // cerr << "split_ptn="; PrintMaskBit(cerr, split_ptn, N - 1); cerr << ", "; // cerr << "trits="; PrintMaskTrit(cerr, tmask, N); cerr << " => "; // cerr << "new_ptn="; PrintMaskBit(cerr, new_split_ptn, N - 1); cerr << "\n"; split_transitions[split_ptn].push_back({ .trits = tmask, .new_pattern = new_split_ptn}); } } } cerr << "start dp\n"; // reachability_paths[N][N][NUM_SPLIT_PATTERNS - 1] = 1; // for (int popcnt = N - 1; popcnt >= 0; --popcnt) { // for (int prevtotal = 0; prevtotal <= N; ++prevtotal) { // for (int nexttotal = prevtotal; nexttotal <= N; ++nexttotal) { // const int blksize = nexttotal - prevtotal; // if (blksize > MAX_ALLOW_OCCURS) { continue; } // if (blksize > min(popcnt, N - popcnt)) { continue; } // heura // for (int prev_ptn = 0; prev_ptn < NUM_SPLIT_PATTERNS; ++prev_ptn) { // for (const auto &trans : split_transitions[prev_ptn]) { // const int tmask = trans.trits; // const i64 num_ways = num_combinations[popcnt][blksize][tmask] / fact[blksize]; // if (!num_ways) { continue; } // if (num_ways > NUM_WAYS_CUTOFF) { continue; } // heura // const int next_ptn = trans.new_pattern; // reachability_paths[popcnt][prevtotal][prev_ptn] += ( // num_ways * reachability_paths[popcnt + 1][nexttotal][next_ptn]); // } // } // } // } // } reachability_paths[N][N][NUM_SPLIT_PATTERNS - 1] = 1; for (int popcnt = N - 1; popcnt >= 0; --popcnt) { for (int blksize = 0; blksize <= N; ++blksize) { if (blksize > MAX_ALLOW_OCCURS) { continue; } if (blksize > min(popcnt, N - popcnt)) { continue; } // heura for (int prev_ptn = 0; prev_ptn < NUM_SPLIT_PATTERNS; ++prev_ptn) { for (const auto &trans : split_transitions[prev_ptn]) { const int tmask = trans.trits; const i64 num_ways = num_combinations[popcnt][blksize][tmask] / fact[blksize]; if (!num_ways) { continue; } if (num_ways > NUM_WAYS_CUTOFF) { continue; } // heura const int next_ptn = trans.new_pattern; for (int prevtotal = 0; prevtotal <= N - blksize; ++prevtotal) { const int nexttotal = prevtotal + blksize; // TODO verify overflows?? reachability_paths[popcnt][prevtotal][prev_ptn] += ( num_ways * reachability_paths[popcnt + 1][nexttotal][next_ptn]); } } } } // for (int prevtotal = 0; prevtotal <= N; ++prevtotal) { // for (int prev_ptn = 0; prev_ptn < NUM_SPLIT_PATTERNS; ++prev_ptn) { // auto &x = reachability_paths[popcnt][prevtotal][prev_ptn]; // if (x > 1e17) { // debug(popcnt, prevtotal, prev_ptn, x); // x = min<i64>(x, 1e17); // } // // assert(x <= 1e16); // } // } } cerr << reachability_paths[0][0][0] << "\n"; } vector<vi> GetRowWays(int popcnt, int num_rows, int tmask) { // vi GetRows(int popcnt, int num_rows, int tmask, int tup_idx) { debug(popcnt, num_rows, tmask); //, tup_idx); if (num_rows == 0) { assert(tmask == 0); // assert(tup_idx == 0); return {vi{}}; } vi avail_bmasks; for (int bmask = 0; bmask < (1 << N); ++bmask) { if (__builtin_popcount(bmask) == popcnt) { avail_bmasks.push_back(bmask); } } vector<vi> result; // int num_found = 0; vi cur_rows; function<void(int, int)> Bt = [&](int bidx, int cur_tmask) { if (SZ(cur_rows) == num_rows - 1) { if (trit_extract[cur_tmask][1]) { return; } const int twos_cand = trit_extract[cur_tmask][2]; if (__builtin_popcount(twos_cand) != popcnt) { return; } cur_rows.push_back(twos_cand); if (is_sorted(ALL(cur_rows))) { result.push_back(cur_rows); } cur_rows.pop_back(); return; } while (bidx < SZ(avail_bmasks)) { const int bmask = avail_bmasks[bidx]; cur_rows.push_back(bmask); Bt(bidx, trits_bits_add[cur_tmask][bmask]); // if (Bt(bidx, trits_bits_add[cur_tmask][bmask])) { // return true; // } cur_rows.pop_back(); ++bidx; } // return false; }; const int rev_tmask = ( to_trit_base[trit_extract[tmask][1]] * 2 + to_trit_base[trit_extract[tmask][2]]); // const bool ans = Bt(0, rev_tmask); Bt(0, rev_tmask); return result; // assert(SZ(ans)); // return cur_rows; } vi MakeMatrix(i64 matrix_idx) { debug(matrix_idx); assert(matrix_idx < reachability_paths[0][0][0]); int cur_popcnt = 0; int cur_total = 0; int cur_ptn = 0; vi matrix; while (cur_popcnt < N) { assert(matrix_idx < reachability_paths[cur_popcnt][cur_total][cur_ptn]); bool found = false; int found_total; SplitTransition found_trans; i64 amount_skipped = 0; for (int nexttotal = cur_total; !found && nexttotal <= N; ++nexttotal) { const int blksize = nexttotal - cur_total; if (blksize > MAX_ALLOW_OCCURS) { continue; } if (blksize > min(cur_popcnt, N - cur_popcnt)) { continue; } // heura for (const auto &trans : split_transitions[cur_ptn]) { const int tmask = trans.trits; const i64 num_ways = num_combinations[cur_popcnt][blksize][tmask] / fact[blksize]; if (!num_ways) { continue; } const int next_ptn = trans.new_pattern; const i64 paths_offered = num_ways * reachability_paths[cur_popcnt + 1][nexttotal][next_ptn]; if (paths_offered <= matrix_idx) { // debug("encode skip", nexttotal, trans.trits, trans.new_pattern, paths_offered); matrix_idx -= paths_offered; amount_skipped += paths_offered; } else { found = true; found_total = nexttotal; found_trans = trans; break; } } } assert(found); debug(amount_skipped); const int blksize = found_total - cur_total; const int tmask = found_trans.trits; const i64 num_ways = num_combinations[cur_popcnt][blksize][tmask] / fact[blksize]; debug(cur_popcnt, cur_ptn, blksize, tmask, matrix_idx, matrix_idx % num_ways); #ifdef LOCAL PrintMaskTrit(cerr, tmask, N); cerr << "\n"; #endif const auto row_opts = GetRowWays(cur_popcnt, blksize, tmask); debug(num_ways, SZ(row_opts)); assert(SZ(row_opts) >= num_ways); for (auto row : row_opts[matrix_idx % num_ways]) { matrix.push_back(row); } matrix_idx /= num_ways; ++cur_popcnt; cur_total = found_total; cur_ptn = found_trans.new_pattern; debug(matrix_idx); } #ifdef LOCAL for (auto row : matrix) { PrintMaskBit(cerr, row, N); cerr << "\n"; } #endif debug("Final idx", matrix_idx); return matrix; } mt19937 gen(time(NULL)); vi ShuffleMatrix(const vi &A) { vi ans(N); vi permcol(N), permrow(N); iota(ALL(permcol), 0); iota(ALL(permrow), 0); shuffle(ALL(permcol), gen); shuffle(ALL(permrow), gen); for (int i = 0; i < N; ++i) { for (int j = 0; j < N; ++j) { const int pi = permrow[i]; const int pj = permcol[j]; ans[i] |= ((A[pi] >> pj) & 1) << j; } } return ans; } i64 DecodeMatrix(vi A) { auto FixColumns = [&]() { vi trits_by_cnt(N); for (int row : A) { const int cnt = __builtin_popcount(row); assert(cnt < N); int &dest = trits_by_cnt[cnt]; dest = trits_bits_add[dest][row]; } vector<string> cnt_trit_matrix(N, string(N, '.')); for (int i = 0; i < N; ++i) { int val = trits_by_cnt[i]; for (int j = 0; j < N; ++j) { cnt_trit_matrix[i][j] = '0' + val % 3; val /= 3; } } vi column_order(N); iota(ALL(column_order), 0); sort(ALL(column_order), [&](int lhs, int rhs) { for (int r = 0; r < N; ++r) { if (cnt_trit_matrix[r][lhs] != cnt_trit_matrix[r][rhs]) { return cnt_trit_matrix[r][lhs] < cnt_trit_matrix[r][rhs]; } } assert(false); }); #ifdef LOCAL for (int i = 0; i < N; ++i) { PrintMaskTrit(cerr, trits_by_cnt[i], N); cerr << "\n"; } #endif debug(column_order); for (int &row : A) { int new_row = 0; for (int i = 0; i < N; ++i) { if (GetBit(row, column_order[i])) { new_row = SetBit(new_row, i); } } row = new_row; } }; auto FixRows = [&]() { sort(ALL(A), [](int lhs, int rhs) { return pii{__builtin_popcount(lhs), lhs} < pii{__builtin_popcount(rhs), rhs}; }); }; FixColumns(); FixRows(); #ifdef LOCAL for (int i = 0; i < N; ++i) { PrintMaskBit(cerr, A[i], N); cerr << "\n"; } #endif int cur_total = 0; int cur_ptn = 0; vll amount_skipped(N); vll value_div(N); vll value_mod(N); for (int popcnt = 0; popcnt < N; ++popcnt) { int next_total = cur_total; while (next_total < N && __builtin_popcount(A[next_total]) == popcnt) { ++next_total; } const int blksize = next_total - cur_total; int next_ptn = cur_ptn; vi col_sums(N); for (int r = cur_total; r < next_total; ++r) { for (int c = 0; c < N; ++c) { col_sums[c] += GetBit(A[r], c); } } for (int c = 0; c < N - 1; ++c) { if (col_sums[c] % 3 != col_sums[c + 1] % 3) { next_ptn = SetBit(next_ptn, c); } } int tmask = 0; { int coef = 1; for (int c = 0; c < N; ++c) { tmask += coef * (col_sums[c] % 3); coef *= 3; } } debug(tmask); debug(popcnt, blksize, next_ptn); bool found = false; for (int skipnexttotal = cur_total; !found && skipnexttotal <= N; ++skipnexttotal) { const int skipblksize = skipnexttotal - cur_total; if (skipblksize > MAX_ALLOW_OCCURS) { continue; } if (skipblksize > min(popcnt, N - popcnt)) { continue; } // heura for (const auto &trans : split_transitions[cur_ptn]) { const int skiptmask = trans.trits; const i64 num_ways = num_combinations[popcnt][skipblksize][skiptmask] / fact[skipblksize]; if (!num_ways) { continue; } const int skipnext_ptn = trans.new_pattern; const i64 paths_offered = num_ways * reachability_paths[popcnt + 1][skipnexttotal][skipnext_ptn]; if (skipnexttotal == next_total && skiptmask == tmask && skipnext_ptn == next_ptn) { found = true; break; } else { // debug("decode skip", skipnexttotal, trans.trits, trans.new_pattern, paths_offered); amount_skipped[popcnt] += paths_offered; } } } const auto row_opts = GetRowWays(popcnt, blksize, tmask); const i64 num_ways = num_combinations[popcnt][blksize][tmask] / fact[blksize]; assert(SZ(row_opts) >= num_ways); const auto iter = find(ALL(row_opts), vi(A.begin() + cur_total, A.begin() + next_total)); assert(iter != row_opts.end()); const int iter_idx = iter - row_opts.begin(); assert(iter_idx < num_ways); debug(iter_idx, num_ways); value_div[popcnt] = num_ways; value_mod[popcnt] = iter_idx; cur_total = next_total; cur_ptn = next_ptn; } i64 matrix_idx = 0; for (int popcnt = N - 1; popcnt >= 0; --popcnt) { debug(popcnt, amount_skipped[popcnt], value_div[popcnt], value_mod[popcnt]); matrix_idx *= value_div[popcnt]; matrix_idx += value_mod[popcnt]; matrix_idx += amount_skipped[popcnt]; debug(popcnt, matrix_idx); } return matrix_idx; } void TestEncoder() { i64 val; cin >> val; val = (val + RANDOM_SHIFT) % SHIFT_MOD; vi X = MakeMatrix(val); assert(SZ(X) == N); for (auto row : X) { for (int c = 0; c < N; ++c) { cout << GetBit(row, c); } cout << "\n"; } cout << flush; } void TestDecoder() { vi X(N); for (int r = 0; r < N; ++r) { string s; cin >> s; for (int c = 0; c < N; ++c) { if (s[c] == '1') { X[r] = SetBit(X[r], c); } } } i64 val = DecodeMatrix(X); val = (val + SHIFT_MOD - RANDOM_SHIFT) % SHIFT_MOD; cout << val << endl; } int main() { Preproc(); string agent; cin >> agent; ll n, t; cin >> n >> t; for (int tidx = 0; tidx < t; ++tidx) { if (agent == "Algosia") { TestEncoder(); } else { TestDecoder(); } } } |
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