結果
| 問題 |
No.137 貯金箱の焦り
|
| コンテスト | |
| ユーザー |
minami
|
| 提出日時 | 2019-04-03 15:07:29 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 136 ms / 5,000 ms |
| コード長 | 2,702 bytes |
| コンパイル時間 | 1,811 ms |
| コンパイル使用メモリ | 170,976 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-12-21 10:29:18 |
| 合計ジャッジ時間 | 3,945 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 23 |
ソースコード
#include "bits/stdc++.h"
using namespace std;
#ifdef _DEBUG
#include "dump.hpp"
#else
#define dump(...)
#endif
#define int long long
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--)
#define all(c) begin(c),end(c)
const int INF = sizeof(int) == sizeof(long long) ? 0x3f3f3f3f3f3f3f3fLL : 0x3f3f3f3f;
const int MOD = 1234567891;
template<class T> bool chmax(T &a, const T &b) { if (a < b) { a = b; return true; } return false; }
template<class T> bool chmin(T &a, const T &b) { if (b < a) { a = b; return true; } return false; }
template<int MOD>
struct ModInt {
static const int kMod = MOD;
unsigned x;
ModInt() :x(0) {}
ModInt(signed x_) { x_ %= MOD; if (x_ < 0)x_ += MOD; x = x_; }
ModInt(signed long long x_) { x_ %= MOD; if (x_ < 0)x_ += MOD; x = x_; }
int get()const { return (int)x; }
ModInt &operator+=(ModInt m) { if ((x += m.x) >= MOD)x -= MOD; return *this; }
ModInt &operator-=(ModInt m) { if ((x += MOD - m.x) >= MOD)x -= MOD; return *this; }
ModInt &operator*=(ModInt m) { x = (unsigned long long)x*m.x%MOD; return *this; }
ModInt &operator/=(ModInt m) { return *this *= m.inverse(); }
ModInt operator+(ModInt m)const { return ModInt(*this) += m; }
ModInt operator-(ModInt m)const { return ModInt(*this) -= m; }
ModInt operator*(ModInt m)const { return ModInt(*this) *= m; }
ModInt operator/(ModInt m)const { return ModInt(*this) /= m; }
ModInt operator-()const { return ModInt(MOD - x); }
bool operator==(ModInt m)const { return x == m.x; }
bool operator!=(ModInt m)const { return x != m.x; }
ModInt inverse()const {
signed a = x, b = MOD, u = 1, v = 0;
while (b) {
signed t = a / b;
a -= t * b; swap(a, b);
u -= t * v; swap(u, v);
}
if (u < 0)u += MOD;
return ModInt(u);
}
};
template<int MOD>
ostream &operator<<(ostream &os, const ModInt<MOD> &m) { return os << m.x; }
template<int MOD>
istream &operator>>(istream &is, ModInt<MOD> &m) { signed long long s; is >> s; m = ModInt<MOD>(s); return is; };
template<int MOD>
ModInt<MOD> pow(ModInt<MOD> a, unsigned long long k) {
ModInt<MOD> r = 1;
while (k) {
if (k & 1)r *= a;
a *= a;
k >>= 1;
}
return r;
}
using mint = ModInt<MOD>;
signed main() {
cin.tie(0);
ios::sync_with_stdio(false);
int N; cin >> N;
int M; cin >> M;
vector<int> A(N); rep(i, 0, N) {
cin >> A[i];
}
int K = accumulate(all(A), 0LL) * 2 + 1;
vector<mint> dp(K + 1);
dp[0] = 1;
while (M) {
rep(i, 0, N) {
for (int j = K; j >= A[i]; j--) {
dp[j] += dp[j - A[i]];
}
}
vector<mint> dp2(K + 1);
rep(i, 0, K) {
if (i * 2 + (M % 2) > K)break;
dp2[i] = dp[i * 2 + (M % 2)];
}
swap(dp, dp2);
M /= 2;
}
cout << dp[0] << endl;
return 0;
}
minami