#include <bits/stdc++.h>
using namespace std;
#define fwd(i, a, n) for (int i = (a); i < (n); i++)
#define rep(i, n) fwd(i, 0, n)
#define all(X) X.begin(), X.end()
#define sz(X) int(size(X))
#define pb push_back
#define eb emplace_back
#define st first
#define nd second
using pii = pair<int, int>;
using vi = vector<int>;
using ll = long long;
using ld = long double;
#ifdef LOC
auto SS = signal(6, [](int) {
*(int *)0 = 0;
});
# define DTP(x, y) \
auto operator<<(auto &o, auto a)->decltype(y, o) { \
o << "("; \
x; \
return o << ")"; \
}
DTP(o << a.st << ", " << a.nd, a.nd);
DTP(for (auto i : a) o << i << ", ", all(a));
void dump(auto... x) {
((cerr << x << ", "), ...) << '\n';
}
# define deb(x...) cerr << setw(4) << __LINE__ << ":[" #x "]: ", dump(x)
#else
# define deb(...) 0
#endif
struct UnsignedBigInt {
// mnożymy przez małe chłopki, także można podbić base
static const long long BASE = 10000000000000LL; // 10^13
vector<long long> digits;
UnsignedBigInt(long long x = 0) {
digits.clear();
while (x > 0) {
digits.push_back(x % BASE);
x /= BASE;
}
}
static int compare(const UnsignedBigInt &a, const UnsignedBigInt &b) {
if (a.digits.size() != b.digits.size())
return (a.digits.size() < b.digits.size() ? -1 : 1);
for (int i = (int)a.digits.size() - 1; i >= 0; i--) {
if (a.digits[i] != b.digits[i])
return (a.digits[i] < b.digits[i] ? -1 : 1);
}
return 0;
}
bool less_than(const UnsignedBigInt &other) const {
return compare(*this, other) < 0;
}
bool greater_than(const UnsignedBigInt &other) const {
return compare(*this, other) > 0;
}
bool less_equal_to(const UnsignedBigInt &other) const {
return compare(*this, other) <= 0;
}
bool greater_equal_to(const UnsignedBigInt &other) const {
return compare(*this, other) >= 0;
}
bool equal_to(const UnsignedBigInt &other) const {
return compare(*this, other) == 0;
}
bool not_equal_to(const UnsignedBigInt &other) const {
return compare(*this, other) != 0;
}
bool equal_to(long long x) const {
return this->equal_to(UnsignedBigInt(x));
}
void remove_leading_zeros() {
while (!digits.empty() && digits.back() == 0)
digits.pop_back();
}
void add(const UnsignedBigInt &other) {
int max_digits = (int)max(digits.size(), other.digits.size());
digits.resize(max_digits);
long long carry = 0;
for (int i = 0; i < max_digits; i++) {
long long cur = carry;
if (i < (int)digits.size())
cur += digits[i];
if (i < (int)other.digits.size())
cur += other.digits[i];
digits[i] = cur % BASE;
carry = cur / BASE;
}
if (carry > 0)
digits.push_back(carry);
}
void subtractSmaller(const UnsignedBigInt &other) {
long long carry = 0;
for (size_t i = 0; i < digits.size(); i++) {
long long cur = digits[i] - carry;
if (i < other.digits.size())
cur -= other.digits[i];
if (cur < 0) {
cur += BASE;
carry = 1;
} else {
carry = 0;
}
digits[i] = cur;
}
remove_leading_zeros();
}
UnsignedBigInt addPositiveInt(long long x) {
long long carry = x;
int i = 0;
while (carry > 0) {
if (i == (int)digits.size())
digits.push_back(0);
long long cur = digits[i] + carry;
digits[i] = cur % BASE;
carry = cur / BASE;
i++;
}
return *this;
}
void mulPositiveInt(long long x) {
long long carry = 0;
for (int i = 0; i < (int)digits.size(); i++) {
long long cur = digits[i] * x + carry;
digits[i] = cur % BASE;
carry = cur / BASE;
}
while (carry > 0) {
digits.push_back(carry % BASE);
carry /= BASE;
}
}
long long divPositiveInt(long long x) {
long long remainder = 0;
for (int i = (int)digits.size() - 1; i >= 0; i--) {
long long cur = digits[i] + remainder * BASE;
digits[i] = cur / x;
remainder = cur % x;
}
remove_leading_zeros();
return remainder;
}
};
UnsignedBigInt range_size(
const UnsignedBigInt &range_start, const UnsignedBigInt &range_end) {
UnsignedBigInt range_size = range_end;
range_size.subtractSmaller(range_start);
return range_size;
}
pair<UnsignedBigInt, UnsignedBigInt> splitIntoThree(
const UnsignedBigInt &start, const UnsignedBigInt &end) {
UnsignedBigInt tot_range_size = range_size(start, end);
UnsignedBigInt subrange_size = tot_range_size;
subrange_size.divPositiveInt(3);
UnsignedBigInt first_split = start;
first_split.add(subrange_size);
UnsignedBigInt second_split = first_split;
second_split.add(subrange_size);
UnsignedBigInt third_range_size = range_size(second_split, end);
if (range_size(subrange_size, third_range_size).greater_than(1)) {
second_split.addPositiveInt(1);
}
return {first_split, second_split};
}
const long long gora_ulamka = 5000 - 3801;
const long long dol_ulamka = 5000;
UnsignedBigInt biasedSplit(
const UnsignedBigInt &start,
const UnsignedBigInt &end,
const int small_side) {
UnsignedBigInt tot_range_size = range_size(start, end);
UnsignedBigInt small_side_size = tot_range_size;
small_side_size.mulPositiveInt(gora_ulamka);
small_side_size.divPositiveInt(dol_ulamka);
if (small_side_size.equal_to(0) && tot_range_size.greater_than(1)) {
small_side_size.addPositiveInt(1);
}
UnsignedBigInt split_point = start;
if (small_side == 0) {
split_point.add(small_side_size);
} else {
split_point.add(tot_range_size);
split_point.subtractSmaller(small_side_size);
}
return split_point;
}
UnsignedBigInt bigIntFromBinaryString(const string &s) {
UnsignedBigInt res;
for (char c : s) {
res.mulPositiveInt(2);
if (c == '1')
res.addPositiveInt(1);
}
return res;
}
string binaryStringFromBigInt(const UnsignedBigInt &x, const int N) {
string res;
UnsignedBigInt cur = x;
while (!cur.equal_to(0)) {
long long rem = cur.divPositiveInt(2);
res += (rem == 1 ? '1' : '0');
}
while ((int)res.size() < N) {
res += '0';
}
reverse(res.begin(), res.end());
return res;
}
string get_random_binary_string(int n, mt19937_64 &rng) {
string res;
rep(i, n) {
int val = rng() % 2;
res += (val ? '1' : '0');
}
return res;
}
string xor_with_binary_string(const string &s, const string &xor_mask) {
string res = s;
for (size_t i = 0; i < s.size(); ++i)
if (xor_mask[i] == '1')
res[i] = (s[i] == '0' ? '1' : '0');
return res;
}
void solve_testcase(int my_id, int N, mt19937_64 &rng) {
int other_id = my_id ^ 1;
string my_data;
cin >> my_data;
string random_xor = get_random_binary_string(N, rng);
my_data = xor_with_binary_string(my_data, random_xor);
UnsignedBigInt my_data_bigint = bigIntFromBinaryString(my_data);
UnsignedBigInt my_range_start, my_range_end;
UnsignedBigInt other_range_start, other_range_end;
my_range_start = other_range_start = UnsignedBigInt(0);
my_range_end = other_range_end =
bigIntFromBinaryString("1" + string(N, '0'));
// i wygrywa z (i + 1) % 3
array<char, 3> symbols = {'P', 'K', 'N'};
map<char, char> loses_to;
map<char, char> beats;
rep(i, 3) {
loses_to[symbols[i]] = symbols[(i + 1) % 3];
beats[symbols[i]] = symbols[(i - 1 + 3) % 3];
}
int my_advantage = 0;
while (true) {
UnsignedBigInt my_range_size = range_size(my_range_start, my_range_end);
UnsignedBigInt other_range_size =
range_size(other_range_start, other_range_end);
if (my_range_size.equal_to(1) && other_range_size.equal_to(1)) {
break;
}
if (my_advantage ==
0) { // draw -> optimal log2(3) information transmition
array<int, 2> symbol_shift_of_id;
rep(id, 2) symbol_shift_of_id[id] = int(rng() % 3);
map<int, char> my_interval_to_symbol;
map<char, int> other_symbol_to_interval;
rep(i, 3) {
char my_sym = symbols[(i + symbol_shift_of_id[my_id]) % 3];
char other_sym =
symbols[(i + symbol_shift_of_id[other_id]) % 3];
my_interval_to_symbol[i] = my_sym;
other_symbol_to_interval[other_sym] = i;
}
// check in which interval my data is and send its symbol
auto [first_range_split, second_range_split] =
splitIntoThree(my_range_start, my_range_end);
char my_symbol = '#';
if (my_data_bigint.greater_equal_to(second_range_split)) {
my_symbol = my_interval_to_symbol[2];
my_range_start = second_range_split;
} else if (my_data_bigint.greater_equal_to(first_range_split)) {
my_symbol = my_interval_to_symbol[1];
my_range_start = first_range_split;
my_range_end = second_range_split;
} else {
my_symbol = my_interval_to_symbol[0];
my_range_end = first_range_split;
}
cout << my_symbol << endl;
char other_symbol;
cin >> other_symbol;
int other_interval = other_symbol_to_interval[other_symbol];
auto [other_first_split, other_second_split] =
splitIntoThree(other_range_start, other_range_end);
if (other_interval == 0) {
other_range_end = other_first_split;
} else if (other_interval == 1) {
other_range_start = other_first_split;
other_range_end = other_second_split;
} else {
other_range_start = other_second_split;
}
// update advantage
if (loses_to[my_symbol] == other_symbol) {
my_advantage = 1;
} else if (beats[my_symbol] == other_symbol) {
my_advantage = -1;
}
} else { // someone winning, must end advantage
int id_with_larger_range = rng() % 2;
if (my_range_size.greater_than(other_range_size)) {
id_with_larger_range = my_id;
} else if (other_range_size.greater_than(my_range_size)) {
id_with_larger_range = other_id;
}
int small_side = rng() % 2;
int large_side = small_side ^ 1;
char draw_symbol = 'P';
char advantage_end_symbol =
((my_id ^ id_with_larger_range) ^ (my_advantage != 1 ? 1 : 0))
? 'N'
: 'K';
// other is disadvantaged, we must give him information
// draw = small interval, advantage_end = large interval
// trade return to greater information throughput for smaller gain
if (id_with_larger_range == my_id) {
map<int, char> my_interval_to_symbol;
my_interval_to_symbol[small_side] = draw_symbol;
my_interval_to_symbol[large_side] = advantage_end_symbol;
UnsignedBigInt split_point =
biasedSplit(my_range_start, my_range_end, small_side);
char my_symbol = '#';
if (my_data_bigint.greater_equal_to(split_point)) {
my_symbol = my_interval_to_symbol[1];
my_range_start = split_point;
} else {
my_symbol = my_interval_to_symbol[0];
my_range_end = split_point;
}
cout << my_symbol << endl;
char other_symbol;
// other symbol is draw_symbol always
cin >> other_symbol;
if (my_symbol == advantage_end_symbol) {
my_advantage = 0;
}
} else {
map<char, int> other_symbol_to_interval;
other_symbol_to_interval[draw_symbol] = small_side;
other_symbol_to_interval[advantage_end_symbol] = large_side;
char my_symbol = draw_symbol; // always draw symbol
cout << my_symbol << endl;
char other_symbol;
cin >> other_symbol;
int other_interval = other_symbol_to_interval[other_symbol];
UnsignedBigInt split_point =
biasedSplit(other_range_start, other_range_end, small_side);
if (other_interval == 0) {
other_range_end = split_point;
} else {
other_range_start = split_point;
}
if (other_symbol == advantage_end_symbol) {
my_advantage = 0;
}
}
}
}
// decoded data
string result = binaryStringFromBigInt(other_range_start, N);
result = xor_with_binary_string(result, random_xor);
cout << "! " << result << endl;
}
int32_t main() {
string id_string;
cin >> id_string;
int my_id = id_string[0] == 'A' ? 0 : 1; // Anastazja = 0, Bogumił = 1
int N, T;
cin >> N >> T;
mt19937_64 rng(
2128 * 70); // 2128 = Ile Kj w 100 gram kranczips keczup stiks
// 70 = ile gram w opakowaniu kranczips keczup stiks
rep(i, T) {
solve_testcase(my_id, N, rng);
}
#ifdef LOCF
cout.flush();
cerr << "- - - - - - - - -\n";
(void)!system(
"grep VmPeak /proc/$PPID/status | sed s/....kB/\' MB\'/1 >&2"); // 4x.kB
// ....kB
#endif
return 0;
}
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 | #include <bits/stdc++.h> using namespace std; #define fwd(i, a, n) for (int i = (a); i < (n); i++) #define rep(i, n) fwd(i, 0, n) #define all(X) X.begin(), X.end() #define sz(X) int(size(X)) #define pb push_back #define eb emplace_back #define st first #define nd second using pii = pair<int, int>; using vi = vector<int>; using ll = long long; using ld = long double; #ifdef LOC auto SS = signal(6, [](int) { *(int *)0 = 0; }); # define DTP(x, y) \ auto operator<<(auto &o, auto a)->decltype(y, o) { \ o << "("; \ x; \ return o << ")"; \ } DTP(o << a.st << ", " << a.nd, a.nd); DTP(for (auto i : a) o << i << ", ", all(a)); void dump(auto... x) { ((cerr << x << ", "), ...) << '\n'; } # define deb(x...) cerr << setw(4) << __LINE__ << ":[" #x "]: ", dump(x) #else # define deb(...) 0 #endif struct UnsignedBigInt { // mnożymy przez małe chłopki, także można podbić base static const long long BASE = 10000000000000LL; // 10^13 vector<long long> digits; UnsignedBigInt(long long x = 0) { digits.clear(); while (x > 0) { digits.push_back(x % BASE); x /= BASE; } } static int compare(const UnsignedBigInt &a, const UnsignedBigInt &b) { if (a.digits.size() != b.digits.size()) return (a.digits.size() < b.digits.size() ? -1 : 1); for (int i = (int)a.digits.size() - 1; i >= 0; i--) { if (a.digits[i] != b.digits[i]) return (a.digits[i] < b.digits[i] ? -1 : 1); } return 0; } bool less_than(const UnsignedBigInt &other) const { return compare(*this, other) < 0; } bool greater_than(const UnsignedBigInt &other) const { return compare(*this, other) > 0; } bool less_equal_to(const UnsignedBigInt &other) const { return compare(*this, other) <= 0; } bool greater_equal_to(const UnsignedBigInt &other) const { return compare(*this, other) >= 0; } bool equal_to(const UnsignedBigInt &other) const { return compare(*this, other) == 0; } bool not_equal_to(const UnsignedBigInt &other) const { return compare(*this, other) != 0; } bool equal_to(long long x) const { return this->equal_to(UnsignedBigInt(x)); } void remove_leading_zeros() { while (!digits.empty() && digits.back() == 0) digits.pop_back(); } void add(const UnsignedBigInt &other) { int max_digits = (int)max(digits.size(), other.digits.size()); digits.resize(max_digits); long long carry = 0; for (int i = 0; i < max_digits; i++) { long long cur = carry; if (i < (int)digits.size()) cur += digits[i]; if (i < (int)other.digits.size()) cur += other.digits[i]; digits[i] = cur % BASE; carry = cur / BASE; } if (carry > 0) digits.push_back(carry); } void subtractSmaller(const UnsignedBigInt &other) { long long carry = 0; for (size_t i = 0; i < digits.size(); i++) { long long cur = digits[i] - carry; if (i < other.digits.size()) cur -= other.digits[i]; if (cur < 0) { cur += BASE; carry = 1; } else { carry = 0; } digits[i] = cur; } remove_leading_zeros(); } UnsignedBigInt addPositiveInt(long long x) { long long carry = x; int i = 0; while (carry > 0) { if (i == (int)digits.size()) digits.push_back(0); long long cur = digits[i] + carry; digits[i] = cur % BASE; carry = cur / BASE; i++; } return *this; } void mulPositiveInt(long long x) { long long carry = 0; for (int i = 0; i < (int)digits.size(); i++) { long long cur = digits[i] * x + carry; digits[i] = cur % BASE; carry = cur / BASE; } while (carry > 0) { digits.push_back(carry % BASE); carry /= BASE; } } long long divPositiveInt(long long x) { long long remainder = 0; for (int i = (int)digits.size() - 1; i >= 0; i--) { long long cur = digits[i] + remainder * BASE; digits[i] = cur / x; remainder = cur % x; } remove_leading_zeros(); return remainder; } }; UnsignedBigInt range_size( const UnsignedBigInt &range_start, const UnsignedBigInt &range_end) { UnsignedBigInt range_size = range_end; range_size.subtractSmaller(range_start); return range_size; } pair<UnsignedBigInt, UnsignedBigInt> splitIntoThree( const UnsignedBigInt &start, const UnsignedBigInt &end) { UnsignedBigInt tot_range_size = range_size(start, end); UnsignedBigInt subrange_size = tot_range_size; subrange_size.divPositiveInt(3); UnsignedBigInt first_split = start; first_split.add(subrange_size); UnsignedBigInt second_split = first_split; second_split.add(subrange_size); UnsignedBigInt third_range_size = range_size(second_split, end); if (range_size(subrange_size, third_range_size).greater_than(1)) { second_split.addPositiveInt(1); } return {first_split, second_split}; } const long long gora_ulamka = 5000 - 3801; const long long dol_ulamka = 5000; UnsignedBigInt biasedSplit( const UnsignedBigInt &start, const UnsignedBigInt &end, const int small_side) { UnsignedBigInt tot_range_size = range_size(start, end); UnsignedBigInt small_side_size = tot_range_size; small_side_size.mulPositiveInt(gora_ulamka); small_side_size.divPositiveInt(dol_ulamka); if (small_side_size.equal_to(0) && tot_range_size.greater_than(1)) { small_side_size.addPositiveInt(1); } UnsignedBigInt split_point = start; if (small_side == 0) { split_point.add(small_side_size); } else { split_point.add(tot_range_size); split_point.subtractSmaller(small_side_size); } return split_point; } UnsignedBigInt bigIntFromBinaryString(const string &s) { UnsignedBigInt res; for (char c : s) { res.mulPositiveInt(2); if (c == '1') res.addPositiveInt(1); } return res; } string binaryStringFromBigInt(const UnsignedBigInt &x, const int N) { string res; UnsignedBigInt cur = x; while (!cur.equal_to(0)) { long long rem = cur.divPositiveInt(2); res += (rem == 1 ? '1' : '0'); } while ((int)res.size() < N) { res += '0'; } reverse(res.begin(), res.end()); return res; } string get_random_binary_string(int n, mt19937_64 &rng) { string res; rep(i, n) { int val = rng() % 2; res += (val ? '1' : '0'); } return res; } string xor_with_binary_string(const string &s, const string &xor_mask) { string res = s; for (size_t i = 0; i < s.size(); ++i) if (xor_mask[i] == '1') res[i] = (s[i] == '0' ? '1' : '0'); return res; } void solve_testcase(int my_id, int N, mt19937_64 &rng) { int other_id = my_id ^ 1; string my_data; cin >> my_data; string random_xor = get_random_binary_string(N, rng); my_data = xor_with_binary_string(my_data, random_xor); UnsignedBigInt my_data_bigint = bigIntFromBinaryString(my_data); UnsignedBigInt my_range_start, my_range_end; UnsignedBigInt other_range_start, other_range_end; my_range_start = other_range_start = UnsignedBigInt(0); my_range_end = other_range_end = bigIntFromBinaryString("1" + string(N, '0')); // i wygrywa z (i + 1) % 3 array<char, 3> symbols = {'P', 'K', 'N'}; map<char, char> loses_to; map<char, char> beats; rep(i, 3) { loses_to[symbols[i]] = symbols[(i + 1) % 3]; beats[symbols[i]] = symbols[(i - 1 + 3) % 3]; } int my_advantage = 0; while (true) { UnsignedBigInt my_range_size = range_size(my_range_start, my_range_end); UnsignedBigInt other_range_size = range_size(other_range_start, other_range_end); if (my_range_size.equal_to(1) && other_range_size.equal_to(1)) { break; } if (my_advantage == 0) { // draw -> optimal log2(3) information transmition array<int, 2> symbol_shift_of_id; rep(id, 2) symbol_shift_of_id[id] = int(rng() % 3); map<int, char> my_interval_to_symbol; map<char, int> other_symbol_to_interval; rep(i, 3) { char my_sym = symbols[(i + symbol_shift_of_id[my_id]) % 3]; char other_sym = symbols[(i + symbol_shift_of_id[other_id]) % 3]; my_interval_to_symbol[i] = my_sym; other_symbol_to_interval[other_sym] = i; } // check in which interval my data is and send its symbol auto [first_range_split, second_range_split] = splitIntoThree(my_range_start, my_range_end); char my_symbol = '#'; if (my_data_bigint.greater_equal_to(second_range_split)) { my_symbol = my_interval_to_symbol[2]; my_range_start = second_range_split; } else if (my_data_bigint.greater_equal_to(first_range_split)) { my_symbol = my_interval_to_symbol[1]; my_range_start = first_range_split; my_range_end = second_range_split; } else { my_symbol = my_interval_to_symbol[0]; my_range_end = first_range_split; } cout << my_symbol << endl; char other_symbol; cin >> other_symbol; int other_interval = other_symbol_to_interval[other_symbol]; auto [other_first_split, other_second_split] = splitIntoThree(other_range_start, other_range_end); if (other_interval == 0) { other_range_end = other_first_split; } else if (other_interval == 1) { other_range_start = other_first_split; other_range_end = other_second_split; } else { other_range_start = other_second_split; } // update advantage if (loses_to[my_symbol] == other_symbol) { my_advantage = 1; } else if (beats[my_symbol] == other_symbol) { my_advantage = -1; } } else { // someone winning, must end advantage int id_with_larger_range = rng() % 2; if (my_range_size.greater_than(other_range_size)) { id_with_larger_range = my_id; } else if (other_range_size.greater_than(my_range_size)) { id_with_larger_range = other_id; } int small_side = rng() % 2; int large_side = small_side ^ 1; char draw_symbol = 'P'; char advantage_end_symbol = ((my_id ^ id_with_larger_range) ^ (my_advantage != 1 ? 1 : 0)) ? 'N' : 'K'; // other is disadvantaged, we must give him information // draw = small interval, advantage_end = large interval // trade return to greater information throughput for smaller gain if (id_with_larger_range == my_id) { map<int, char> my_interval_to_symbol; my_interval_to_symbol[small_side] = draw_symbol; my_interval_to_symbol[large_side] = advantage_end_symbol; UnsignedBigInt split_point = biasedSplit(my_range_start, my_range_end, small_side); char my_symbol = '#'; if (my_data_bigint.greater_equal_to(split_point)) { my_symbol = my_interval_to_symbol[1]; my_range_start = split_point; } else { my_symbol = my_interval_to_symbol[0]; my_range_end = split_point; } cout << my_symbol << endl; char other_symbol; // other symbol is draw_symbol always cin >> other_symbol; if (my_symbol == advantage_end_symbol) { my_advantage = 0; } } else { map<char, int> other_symbol_to_interval; other_symbol_to_interval[draw_symbol] = small_side; other_symbol_to_interval[advantage_end_symbol] = large_side; char my_symbol = draw_symbol; // always draw symbol cout << my_symbol << endl; char other_symbol; cin >> other_symbol; int other_interval = other_symbol_to_interval[other_symbol]; UnsignedBigInt split_point = biasedSplit(other_range_start, other_range_end, small_side); if (other_interval == 0) { other_range_end = split_point; } else { other_range_start = split_point; } if (other_symbol == advantage_end_symbol) { my_advantage = 0; } } } } // decoded data string result = binaryStringFromBigInt(other_range_start, N); result = xor_with_binary_string(result, random_xor); cout << "! " << result << endl; } int32_t main() { string id_string; cin >> id_string; int my_id = id_string[0] == 'A' ? 0 : 1; // Anastazja = 0, Bogumił = 1 int N, T; cin >> N >> T; mt19937_64 rng( 2128 * 70); // 2128 = Ile Kj w 100 gram kranczips keczup stiks // 70 = ile gram w opakowaniu kranczips keczup stiks rep(i, T) { solve_testcase(my_id, N, rng); } #ifdef LOCF cout.flush(); cerr << "- - - - - - - - -\n"; (void)!system( "grep VmPeak /proc/$PPID/status | sed s/....kB/\' MB\'/1 >&2"); // 4x.kB // ....kB #endif return 0; } |
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