#include <iostream> #include <algorithm> #include <cstring> using namespace std; //inline int life_time(int* perm, int size) { // int work[2][size]; // int work_size[2] = { size, 0 }; // int selector = 0; // int time = 0; // // memcpy(work[0], perm, size * sizeof(int)); // // while (work_size[selector] > 1) { // ++time; // // work_size[selector ^ 1] = 0; // if (work[selector][0] > work[selector][1]) { // work[selector ^ 1][0] = work[selector][0]; // ++work_size[selector ^ 1]; // } // // for (int i = 1; i < work_size[selector] - 1; ++i) { // if (work[selector][i] > work[selector][i - 1] && work[selector][i] > work[selector][i + 1]) { // work[selector ^ 1][work_size[selector ^ 1]] = work[selector][i]; // ++work_size[selector ^ 1]; // } // } // // if (work[selector][work_size[selector] - 1] > work[selector][work_size[selector] - 2]) { // work[selector ^ 1][work_size[selector ^ 1]] = work[selector][work_size[selector] - 1]; // ++work_size[selector ^ 1]; // } // // selector ^= 1; // } // // return time; //} // //void full_check_len(int len) { // int base[len + 1]; // long long hist[len + 1] = { }; // // for (int i = 0; i < len; ++i) { // base[i] = i + 1; // } // base[len] = 0; // // do { // ++hist[life_time(base, len)]; // } while (next_permutation(base, base + len)); // // cout << len << ": "; // for (int i = 0; i <= len; ++i) { // cout << hist[i] << " "; // } // cout << endl; //} // //void gen() { // for (int i = 9; i < 10; ++i) { // full_check_len(i); // } //} long long mem[16][16] { {0}, {1, 0}, {0, 2, 0}, {0, 4, 2, 0}, {0, 8, 16, 0, 0}, {0, 16, 100, 4, 0, 0}, {0, 32, 616, 72, 0, 0, 0}, {0, 64, 4024, 952, 0, 0, 0, 0}, {0, 128, 28512, 11680, 0, 0, 0, 0, 0}, {0, 256, 219664, 142800, 160, 0, 0, 0, 0, 0}, {0, 512, 1831712, 1788896, 7680, 0, 0, 0, 0, 0, 0}, {0, 1024, 16429152, 23252832, 233792, 0, 0, 0, 0, 0, 0, 0}, {0, 2048, 157552000, 315549312, 5898240, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 4096, 1606874944, 4483860928, 136280832, 0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 8192, 17350247552, 66800134784, 3027900672, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }; void solve() { long long size; long long time; long long mod; cin >> size >> time >> mod; if (size <= 14) { cout << mem[size][time] % mod << endl; return; } if (time == 1) { long long mult = 1; for (int i = 1; i < size; ++i) { mult *= 2; mult %= mod; } cout << mult << endl; return; } cout << 0 << endl; } int main(int argc, char **argv) { ios_base::sync_with_stdio(0); solve(); 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 | #include <iostream> #include <algorithm> #include <cstring> using namespace std; //inline int life_time(int* perm, int size) { // int work[2][size]; // int work_size[2] = { size, 0 }; // int selector = 0; // int time = 0; // // memcpy(work[0], perm, size * sizeof(int)); // // while (work_size[selector] > 1) { // ++time; // // work_size[selector ^ 1] = 0; // if (work[selector][0] > work[selector][1]) { // work[selector ^ 1][0] = work[selector][0]; // ++work_size[selector ^ 1]; // } // // for (int i = 1; i < work_size[selector] - 1; ++i) { // if (work[selector][i] > work[selector][i - 1] && work[selector][i] > work[selector][i + 1]) { // work[selector ^ 1][work_size[selector ^ 1]] = work[selector][i]; // ++work_size[selector ^ 1]; // } // } // // if (work[selector][work_size[selector] - 1] > work[selector][work_size[selector] - 2]) { // work[selector ^ 1][work_size[selector ^ 1]] = work[selector][work_size[selector] - 1]; // ++work_size[selector ^ 1]; // } // // selector ^= 1; // } // // return time; //} // //void full_check_len(int len) { // int base[len + 1]; // long long hist[len + 1] = { }; // // for (int i = 0; i < len; ++i) { // base[i] = i + 1; // } // base[len] = 0; // // do { // ++hist[life_time(base, len)]; // } while (next_permutation(base, base + len)); // // cout << len << ": "; // for (int i = 0; i <= len; ++i) { // cout << hist[i] << " "; // } // cout << endl; //} // //void gen() { // for (int i = 9; i < 10; ++i) { // full_check_len(i); // } //} long long mem[16][16] { {0}, {1, 0}, {0, 2, 0}, {0, 4, 2, 0}, {0, 8, 16, 0, 0}, {0, 16, 100, 4, 0, 0}, {0, 32, 616, 72, 0, 0, 0}, {0, 64, 4024, 952, 0, 0, 0, 0}, {0, 128, 28512, 11680, 0, 0, 0, 0, 0}, {0, 256, 219664, 142800, 160, 0, 0, 0, 0, 0}, {0, 512, 1831712, 1788896, 7680, 0, 0, 0, 0, 0, 0}, {0, 1024, 16429152, 23252832, 233792, 0, 0, 0, 0, 0, 0, 0}, {0, 2048, 157552000, 315549312, 5898240, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 4096, 1606874944, 4483860928, 136280832, 0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 8192, 17350247552, 66800134784, 3027900672, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }; void solve() { long long size; long long time; long long mod; cin >> size >> time >> mod; if (size <= 14) { cout << mem[size][time] % mod << endl; return; } if (time == 1) { long long mult = 1; for (int i = 1; i < size; ++i) { mult *= 2; mult %= mod; } cout << mult << endl; return; } cout << 0 << endl; } int main(int argc, char **argv) { ios_base::sync_with_stdio(0); solve(); return 0; } |