結果
問題 |
No.3229 Liar Game Comibination
|
ユーザー |
![]() |
提出日時 | 2025-08-08 22:16:09 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 243 ms / 2,000 ms |
コード長 | 3,290 bytes |
コンパイル時間 | 917 ms |
コンパイル使用メモリ | 93,552 KB |
実行使用メモリ | 7,716 KB |
最終ジャッジ日時 | 2025-08-08 22:16:14 |
合計ジャッジ時間 | 3,819 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 29 |
ソースコード
// // binary 行列 (行列累乗と、掃き出し法) // // verified: // みんなのプロコン 2019 E - Odd Subrectangles // https://atcoder.jp/contests/yahoo-procon2019-qual/tasks/yahoo_procon2019_qual_e // // AOJ 1308 Awkward Lights (ICPC アジア 2010 D) // http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1308 // // AOJ 2624 Graph Automata Player // judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2624 // #include <iostream> #include <vector> #include <bitset> using namespace std; const int MAX_ROW = 2560; // to be set appropriately const int MAX_COL = 2560; // to be set appropriately struct BitMatrix { int H, W; bitset<MAX_COL> val[MAX_ROW]; BitMatrix(int m = 1, int n = 1) : H(m), W(n) {} inline bitset<MAX_COL>& operator [] (int i) {return val[i];} }; ostream& operator << (ostream& s, BitMatrix A) { s << endl; for (int i = 0; i < A.H; ++i) { for (int j = 0; j < A.W; ++j) { s << A[i][j] << ", "; } s << endl; } return s; } inline BitMatrix operator * (BitMatrix A, BitMatrix B) { BitMatrix R(A.H, B.W); BitMatrix tB(B.W, B.H); for (int i = 0; i < tB.H; ++i) for (int j = 0; j < tB.W; ++j) tB[i][j] = B[j][i]; for (int i = 0; i < R.H; ++i) for (int j = 0; j < R.W; ++j) R[i][j] = ((A[i] & tB[j]).count() & 1); return R; } inline BitMatrix pow(BitMatrix A, long long n) { BitMatrix R(A.H, A.H); for (int i = 0; i < A.H; ++i) R[i][i] = 1; while (n > 0) { if (n & 1) R = R * A; A = A * A; n >>= 1; } return R; } int GaussJordan(BitMatrix &A, bool is_extended = false) { int rank = 0; for (int col = 0; col < A.W; ++col) { if (is_extended && col == A.W - 1) break; int pivot = -1; for (int row = rank; row < A.H; ++row) { if (A[row][col]) { pivot = row; break; } } if (pivot == -1) continue; swap(A[pivot], A[rank]); for (int row = 0; row < A.H; ++row) { if (row != rank && A[row][col]) A[row] ^= A[rank]; } ++rank; } return rank; } int linear_equation(BitMatrix A, vector<int> b, vector<int> &res) { int m = A.H, n = A.W; BitMatrix M(m, n + 1); for (int i = 0; i < m; ++i) { for (int j = 0; j < n; ++j) M[i][j] = A[i][j]; M[i][n] = b[i]; } int rank = GaussJordan(M, true); // check if it has no solution for (int row = rank; row < m; ++row) if (M[row][n]) return -1; // answer res.assign(n, 0); for (int i = 0; i < rank; ++i) res[i] = M[i][n]; return rank; } const int MOD = 998244353; long long modpow(long long a, long long n, long long mod) { long long res = 1; while (n > 0) { if (n & 1) res = res * a % mod; a = a * a % mod; n >>= 1; } return res; } int main() { int N, M,K; cin >> N >> M >> K; BitMatrix A(M,N); for (int i = 0; i < M; ++i) { string s; cin >> s; for (int j = 0; j < N; j++) A[i][j] = s[j]-'0'; } vector<int> res; vector<int> a(N),b(M); int r = linear_equation(A,b,a); if(r == -1){ cout << 0 << endl; } else{ cout << modpow(2,N-r,K) << endl; } }