//泥の分際で私だけの大切を奪おうだなん #include<bits/stdc++.h> uint64_t gcd_stein_impl( uint64_t x, uint64_t y ) { if( x == y ) { return x; } const uint64_t a = y - x; const uint64_t b = x - y; const int n = __builtin_ctzll( b ); const uint64_t s = x < y ? a : b; const uint64_t t = x < y ? x : y; return gcd_stein_impl( s >> n, t ); } uint64_t gcd_stein( uint64_t x, uint64_t y ) { if( x == 0 ) { return y; } if( y == 0 ) { return x; } const int n = __builtin_ctzll( x ); const int m = __builtin_ctzll( y ); return gcd_stein_impl( x >> n, y >> m ) << ( n < m ? n : m ); } // ---- is_prime ---- uint64_t mod_pow( uint64_t x, uint64_t y, uint64_t mod ) { uint64_t ret = 1; uint64_t acc = x; for( ; y; y >>= 1 ) { if( y & 1 ) { ret = __uint128_t(ret) * acc % mod; } acc = __uint128_t(acc) * acc % mod; } return ret; } bool miller_rabin( uint64_t n, const std::initializer_list<uint64_t>& as ) { return std::all_of( as.begin(), as.end(), [n]( uint64_t a ) { if( n <= a ) { return true; } int e = __builtin_ctzll( n - 1 ); uint64_t z = mod_pow( a, ( n - 1 ) >> e, n ); if( z == 1 || z == n - 1 ) { return true; } while( --e ) { z = __uint128_t(z) * z % n; if( z == 1 ) { return false; } if( z == n - 1 ) { return true; } } return false; }); } bool is_prime( uint64_t n ) { if( n == 2 ) { return true; } if( n % 2 == 0 ) { return false; } if( n < 4759123141 ) { return miller_rabin( n, { 2, 7, 61 } ); } return miller_rabin( n, { 2, 325, 9375, 28178, 450775, 9780504, 1795265022 } ); } // ---- Montgomery ---- class Montgomery { uint64_t mod; uint64_t R; public: Montgomery( uint64_t n ) : mod(n), R(n) { for( size_t i = 0; i < 5; ++i ) { R *= 2 - mod * R; } } uint64_t fma( uint64_t a, uint64_t b, uint64_t c ) const { const __uint128_t d = __uint128_t(a) * b; const uint64_t e = c + mod + ( d >> 64 ); const uint64_t f = uint64_t(d) * R; const uint64_t g = ( __uint128_t(f) * mod ) >> 64; return e - g; } uint64_t mul( uint64_t a, uint64_t b ) const { return fma( a, b, 0 ); } }; // ---- Pollard's rho algorithm ---- uint64_t pollard_rho( uint64_t n ) { if( n % 2 == 0 ) { return 2; } const Montgomery m( n ); constexpr uint64_t C1 = 1; constexpr uint64_t C2 = 2; constexpr uint64_t M = 512; uint64_t Z1 = 1; uint64_t Z2 = 2; retry: uint64_t z1 = Z1; uint64_t z2 = Z2; for( size_t k = M; ; k *= 2 ) { const uint64_t x1 = z1 + n; const uint64_t x2 = z2 + n; for( size_t j = 0; j < k; j += M ) { const uint64_t y1 = z1; const uint64_t y2 = z2; uint64_t q1 = 1; uint64_t q2 = 2; z1 = m.fma( z1, z1, C1 ); z2 = m.fma( z2, z2, C2 ); for( size_t i = 0; i < M; ++i ) { const uint64_t t1 = x1 - z1; const uint64_t t2 = x2 - z2; z1 = m.fma( z1, z1, C1 ); z2 = m.fma( z2, z2, C2 ); q1 = m.mul( q1, t1 ); q2 = m.mul( q2, t2 ); } q1 = m.mul( q1, x1 - z1 ); q2 = m.mul( q2, x2 - z2 ); const uint64_t q3 = m.mul( q1, q2 ); const uint64_t g3 = gcd_stein( n, q3 ); if( g3 == 1 ) { continue; } if( g3 != n ) { return g3; } const uint64_t g1 = gcd_stein( n, q1 ); const uint64_t g2 = gcd_stein( n, q2 ); const uint64_t C = g1 != 1 ? C1 : C2; const uint64_t x = g1 != 1 ? x1 : x2; uint64_t z = g1 != 1 ? y1 : y2; uint64_t g = g1 != 1 ? g1 : g2; if( g == n ) { do { z = m.fma( z, z, C ); g = gcd_stein( n, x - z ); } while( g == 1 ); } if( g != n ) { return g; } Z1 += 2; Z2 += 2; goto retry; } } } void factorize_impl( uint64_t n, std::vector<uint64_t>& ret ) { if( n <= 1 ) { return; } if( is_prime( n ) ) { ret.push_back( n ); return; } const uint64_t p = pollard_rho( n ); factorize_impl( p, ret ); factorize_impl( n / p, ret ); } std::vector<uint64_t> factorize( uint64_t n ) { std::vector<uint64_t> ret; factorize_impl( n, ret ); std::sort( ret.begin(), ret.end() ); return ret; } #ifdef local static int T = 0; static long long N = 0; static int Q = 0; static long long C = 0; static long long hidden_x = 0; static int queries = 0; static int num_testcase = 0; void start_testcase() { num_testcase++; if (num_testcase <= T) { if (scanf("%lld", &hidden_x) != 1) { printf("Błąd wczytywania!\n"); exit(0); } } else { hidden_x = -1; puts("AC"); } } void init() { if (hidden_x != 0) { return; } if (scanf("%d%lld%d%lld", &T, &N, &Q, &C) != 4) { printf("Błąd wczytywania!\n"); exit(0); } start_testcase(); } int GetT() { init(); return T; } long long GetN() { init(); return N; } int GetQ() { init(); return Q; } long long GetC() { init(); return C; } long long Ask(long long y) { init(); if (hidden_x == -1) { printf("ERROR: wywołanie funkcji Ask po zakończeniu wszystkich przypadków testowych\n"); exit(0); } if (y < 0 || y > C) { printf("ERROR: niepoprawny argument funkcji Ask: %lld\n", y); exit(0); } queries++; if (queries > Q) { printf("ERROR: przekroczono limit zapytań\n"); exit(0); } long long num=hidden_x+y,res=1; std::vector<uint64_t> o=factorize(num); std::map<long long,long long> mp; for(long long i:o) ++mp[i]; for(auto [x,y]:mp) res=res*(y+1); return res; } int ALL_CASES=0; void Answer(long long z) { if(++ALL_CASES==10) { if(queries>720) printf("WA "),std::cerr<<"WA"<<std::endl; else printf("OK "); printf("%d\n",queries), queries=0,ALL_CASES=0; } init(); if (hidden_x == -1) { printf("ERROR: wywołanie funkcji Answer po zakończeniu wszystkich przypadków testowych\n"); exit(0); } if (z != hidden_x) { printf("ERROR: ukryty x wynosił %lld, a udzielona odpowiedź to %lld\n", hidden_x, z); exit(0); } start_testcase(); } #else #include"dzilib.h" #endif long long divisors(long long y) { long long num=y,res=1; std::vector<uint64_t> o=factorize(num); std::map<long long,long long> mp; for(long long i:o) ++mp[i]; for(auto [x,y]:mp) res=res*(y+1); return res; } using namespace std; #define ll long long ll M,W,lst; map<ll,ll> mp; ll Query(ll o) { if(mp.count(o)) return mp[o]; return mp[o]=Ask(o); } bool perfect(ll o) { for(auto [x,y]:mp) if(divisors(x+o)!=y) return 0; return 1; } ll dfs(ll p,ll x,ll d) { if(M>1e13&&p*32>M) { lst=p*32; for(ll i=x; i<p*32; i+=p) if(perfect(((i-W)%lst+lst)%lst)) return i; return -1; } if(p>M){lst=p;return x;} for(int i=0; i<4; ++i) { ll o=Query(W-x-i*p); if(o%d!=0) continue; ll res=dfs(p<<1,(x+i*p)%(p<<1),d+1); if(res!=-1) return res; } return -1; } void HaitangSuki() { mp.clear(); ll ans=dfs(1,0,2); Answer(((ans-W)%lst+lst)%lst); } signed main() { mt19937_64 rnd(20080520); M=GetN(); const ll A=1e16,B=1e11; for(int T=GetT();T--; HaitangSuki()) { W=rnd()%A+A; if(M<=1000000000) W=rnd()%B+B; } 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 | //泥の分際で私だけの大切を奪おうだなん #include<bits/stdc++.h> uint64_t gcd_stein_impl( uint64_t x, uint64_t y ) { if( x == y ) { return x; } const uint64_t a = y - x; const uint64_t b = x - y; const int n = __builtin_ctzll( b ); const uint64_t s = x < y ? a : b; const uint64_t t = x < y ? x : y; return gcd_stein_impl( s >> n, t ); } uint64_t gcd_stein( uint64_t x, uint64_t y ) { if( x == 0 ) { return y; } if( y == 0 ) { return x; } const int n = __builtin_ctzll( x ); const int m = __builtin_ctzll( y ); return gcd_stein_impl( x >> n, y >> m ) << ( n < m ? n : m ); } // ---- is_prime ---- uint64_t mod_pow( uint64_t x, uint64_t y, uint64_t mod ) { uint64_t ret = 1; uint64_t acc = x; for( ; y; y >>= 1 ) { if( y & 1 ) { ret = __uint128_t(ret) * acc % mod; } acc = __uint128_t(acc) * acc % mod; } return ret; } bool miller_rabin( uint64_t n, const std::initializer_list<uint64_t>& as ) { return std::all_of( as.begin(), as.end(), [n]( uint64_t a ) { if( n <= a ) { return true; } int e = __builtin_ctzll( n - 1 ); uint64_t z = mod_pow( a, ( n - 1 ) >> e, n ); if( z == 1 || z == n - 1 ) { return true; } while( --e ) { z = __uint128_t(z) * z % n; if( z == 1 ) { return false; } if( z == n - 1 ) { return true; } } return false; }); } bool is_prime( uint64_t n ) { if( n == 2 ) { return true; } if( n % 2 == 0 ) { return false; } if( n < 4759123141 ) { return miller_rabin( n, { 2, 7, 61 } ); } return miller_rabin( n, { 2, 325, 9375, 28178, 450775, 9780504, 1795265022 } ); } // ---- Montgomery ---- class Montgomery { uint64_t mod; uint64_t R; public: Montgomery( uint64_t n ) : mod(n), R(n) { for( size_t i = 0; i < 5; ++i ) { R *= 2 - mod * R; } } uint64_t fma( uint64_t a, uint64_t b, uint64_t c ) const { const __uint128_t d = __uint128_t(a) * b; const uint64_t e = c + mod + ( d >> 64 ); const uint64_t f = uint64_t(d) * R; const uint64_t g = ( __uint128_t(f) * mod ) >> 64; return e - g; } uint64_t mul( uint64_t a, uint64_t b ) const { return fma( a, b, 0 ); } }; // ---- Pollard's rho algorithm ---- uint64_t pollard_rho( uint64_t n ) { if( n % 2 == 0 ) { return 2; } const Montgomery m( n ); constexpr uint64_t C1 = 1; constexpr uint64_t C2 = 2; constexpr uint64_t M = 512; uint64_t Z1 = 1; uint64_t Z2 = 2; retry: uint64_t z1 = Z1; uint64_t z2 = Z2; for( size_t k = M; ; k *= 2 ) { const uint64_t x1 = z1 + n; const uint64_t x2 = z2 + n; for( size_t j = 0; j < k; j += M ) { const uint64_t y1 = z1; const uint64_t y2 = z2; uint64_t q1 = 1; uint64_t q2 = 2; z1 = m.fma( z1, z1, C1 ); z2 = m.fma( z2, z2, C2 ); for( size_t i = 0; i < M; ++i ) { const uint64_t t1 = x1 - z1; const uint64_t t2 = x2 - z2; z1 = m.fma( z1, z1, C1 ); z2 = m.fma( z2, z2, C2 ); q1 = m.mul( q1, t1 ); q2 = m.mul( q2, t2 ); } q1 = m.mul( q1, x1 - z1 ); q2 = m.mul( q2, x2 - z2 ); const uint64_t q3 = m.mul( q1, q2 ); const uint64_t g3 = gcd_stein( n, q3 ); if( g3 == 1 ) { continue; } if( g3 != n ) { return g3; } const uint64_t g1 = gcd_stein( n, q1 ); const uint64_t g2 = gcd_stein( n, q2 ); const uint64_t C = g1 != 1 ? C1 : C2; const uint64_t x = g1 != 1 ? x1 : x2; uint64_t z = g1 != 1 ? y1 : y2; uint64_t g = g1 != 1 ? g1 : g2; if( g == n ) { do { z = m.fma( z, z, C ); g = gcd_stein( n, x - z ); } while( g == 1 ); } if( g != n ) { return g; } Z1 += 2; Z2 += 2; goto retry; } } } void factorize_impl( uint64_t n, std::vector<uint64_t>& ret ) { if( n <= 1 ) { return; } if( is_prime( n ) ) { ret.push_back( n ); return; } const uint64_t p = pollard_rho( n ); factorize_impl( p, ret ); factorize_impl( n / p, ret ); } std::vector<uint64_t> factorize( uint64_t n ) { std::vector<uint64_t> ret; factorize_impl( n, ret ); std::sort( ret.begin(), ret.end() ); return ret; } #ifdef local static int T = 0; static long long N = 0; static int Q = 0; static long long C = 0; static long long hidden_x = 0; static int queries = 0; static int num_testcase = 0; void start_testcase() { num_testcase++; if (num_testcase <= T) { if (scanf("%lld", &hidden_x) != 1) { printf("Błąd wczytywania!\n"); exit(0); } } else { hidden_x = -1; puts("AC"); } } void init() { if (hidden_x != 0) { return; } if (scanf("%d%lld%d%lld", &T, &N, &Q, &C) != 4) { printf("Błąd wczytywania!\n"); exit(0); } start_testcase(); } int GetT() { init(); return T; } long long GetN() { init(); return N; } int GetQ() { init(); return Q; } long long GetC() { init(); return C; } long long Ask(long long y) { init(); if (hidden_x == -1) { printf("ERROR: wywołanie funkcji Ask po zakończeniu wszystkich przypadków testowych\n"); exit(0); } if (y < 0 || y > C) { printf("ERROR: niepoprawny argument funkcji Ask: %lld\n", y); exit(0); } queries++; if (queries > Q) { printf("ERROR: przekroczono limit zapytań\n"); exit(0); } long long num=hidden_x+y,res=1; std::vector<uint64_t> o=factorize(num); std::map<long long,long long> mp; for(long long i:o) ++mp[i]; for(auto [x,y]:mp) res=res*(y+1); return res; } int ALL_CASES=0; void Answer(long long z) { if(++ALL_CASES==10) { if(queries>720) printf("WA "),std::cerr<<"WA"<<std::endl; else printf("OK "); printf("%d\n",queries), queries=0,ALL_CASES=0; } init(); if (hidden_x == -1) { printf("ERROR: wywołanie funkcji Answer po zakończeniu wszystkich przypadków testowych\n"); exit(0); } if (z != hidden_x) { printf("ERROR: ukryty x wynosił %lld, a udzielona odpowiedź to %lld\n", hidden_x, z); exit(0); } start_testcase(); } #else #include"dzilib.h" #endif long long divisors(long long y) { long long num=y,res=1; std::vector<uint64_t> o=factorize(num); std::map<long long,long long> mp; for(long long i:o) ++mp[i]; for(auto [x,y]:mp) res=res*(y+1); return res; } using namespace std; #define ll long long ll M,W,lst; map<ll,ll> mp; ll Query(ll o) { if(mp.count(o)) return mp[o]; return mp[o]=Ask(o); } bool perfect(ll o) { for(auto [x,y]:mp) if(divisors(x+o)!=y) return 0; return 1; } ll dfs(ll p,ll x,ll d) { if(M>1e13&&p*32>M) { lst=p*32; for(ll i=x; i<p*32; i+=p) if(perfect(((i-W)%lst+lst)%lst)) return i; return -1; } if(p>M){lst=p;return x;} for(int i=0; i<4; ++i) { ll o=Query(W-x-i*p); if(o%d!=0) continue; ll res=dfs(p<<1,(x+i*p)%(p<<1),d+1); if(res!=-1) return res; } return -1; } void HaitangSuki() { mp.clear(); ll ans=dfs(1,0,2); Answer(((ans-W)%lst+lst)%lst); } signed main() { mt19937_64 rnd(20080520); M=GetN(); const ll A=1e16,B=1e11; for(int T=GetT();T--; HaitangSuki()) { W=rnd()%A+A; if(M<=1000000000) W=rnd()%B+B; } return 0; } |