結果
| 問題 |
No.3229 Liar Game Comibination
|
| コンテスト | |
| ユーザー |
kwm_t
|
| 提出日時 | 2025-08-08 22:31:17 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,550 bytes |
| コンパイル時間 | 5,950 ms |
| コンパイル使用メモリ | 335,140 KB |
| 実行使用メモリ | 88,104 KB |
| 最終ジャッジ日時 | 2025-08-08 22:31:31 |
| 合計ジャッジ時間 | 14,191 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 19 TLE * 1 -- * 9 |
ソースコード
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using mint = atcoder::modint;
//using mint = modint1000000007;
//const int mod = 1000000007;
//using mint = modint998244353;
//const int mod = 998244353;
//const int INF = 1e9;
//const long long LINF = 1e18;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n) - 1; i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r) - 1;i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define P pair<int,int>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
#include <vector>
#include <string>
#include <iostream>
using modint2 = static_modint<2>;
template<typename ModInt>
struct GaussJordan {
GaussJordan(std::vector<std::vector<ModInt>>_a, std::vector<ModInt>_b) :a(_a), b(_b) {}
// デバッグ用
void dbg() {
int n = a.size();
int m = a[0].size();
for (int i = 0; i < n; ++i) {
for (int j = 0; j < n; ++j)std::cout << a[i][j].val() << " ";
std::cout << std::endl;
}
for (int i = 0; i < n; ++i) std::cout << b[i].val() << " ";
std::cout << std::endl;
}
// 掃き出し法
int sweep() {
int n = a.size();
int m = a[0].size();
rank = 0;
for (int i = 0; i < m; ++i) {
int pivot = -1;
for (int j = rank; j < n; ++j) {
if (0 != a[j][i]) {
pivot = j;
break;
}
}
if (-1 == pivot)continue;
ModInt inv = inv_mod(a[pivot][i].val(), ModInt::mod());
std::swap(a[rank], a[pivot]);
std::swap(b[rank], b[pivot]);
for (int j = i; j < m; ++j) a[rank][j] *= inv;
b[rank] *= inv;
for (int j = 0; j < n; ++j) {
if (rank == j)continue;
if (0 == a[j][i])continue;
ModInt x = a[j][i];
for (int k = 0; k < m; ++k) a[j][k] -= x * a[rank][k];
b[j] -= x * b[rank];
}
rank++;
}
return rank;
}
// Ax= Bなxを1つ求める
bool solve() {
int n = a.size();
int m = a[0].size();
x.assign(m, 0);
sweep();
for (int i = rank; i < n; ++i)if (0 != b[i].val()) return false;
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
if (0 != a[i][j]) {
x[j] = b[i];
break;
}
}
}
return true;
}
// 核
std::vector<std::vector<ModInt>> kernel() {
int n = a.size();
int m = a[0].size();
sweep();
std::vector<int>cols(m, 0), piv;
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
if (1 == a[i][j]) {
cols[j] = 1;
piv.push_back(j);
break;
}
}
}
ker.clear();
for (int i = 0; i < m; ++i) {
if (cols[i])continue;
std::vector<ModInt>v(m);
v[i] = -1;
for (int j = 0; j < piv.size(); ++j) v[piv[j]] = a[j][i];
ker.push_back(v);
}
return ker;
}
int rank;
std::vector<std::vector<ModInt>>a;
std::vector<ModInt>x;
std::vector<ModInt>b;
std::vector<std::vector<ModInt>>ker;
};
// how to use
// using modint2 = static_modint<2>;
// vector a(n, vector<modint2>(n));
// vector<modint2>b(n);
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int n, m, k; cin >> n >> m >> k;
mint::set_mod(k);
vector a(m, vector<modint2>(n));
rep(i, m) {
string s; cin >> s;
rep(j, n)if (s[j] == '1')a[i][j] = 1;
}
vector<modint2>b(m);
GaussJordan gj(a, b);
auto rank = gj.sweep();
int ans = pow_mod(2, n - rank, k);
cout << ans << endl;
return 0;
}
kwm_t