結果
| 問題 |
No.137 貯金箱の焦り
|
| コンテスト | |
| ユーザー |
anta
|
| 提出日時 | 2015-01-26 01:07:06 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
AC
|
| 実行時間 | 115 ms / 5,000 ms |
| コード長 | 3,062 bytes |
| コンパイル時間 | 963 ms |
| コンパイル使用メモリ | 84,748 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-11-07 23:03:21 |
| 合計ジャッジ時間 | 1,984 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 23 |
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:76:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
76 | scanf("%d%lld", &N, &M);
| ~~~~~^~~~~~~~~~~~~~~~~~
main.cpp:78:24: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
78 | rep(i, N) scanf("%d", &A[i]);
| ~~~~~^~~~~~~~~~~~~
ソースコード
#include <string>
#include <vector>
#include <algorithm>
#include <numeric>
#include <set>
#include <map>
#include <queue>
#include <iostream>
#include <sstream>
#include <cstdio>
#include <cmath>
#include <ctime>
#include <cstring>
#include <cctype>
#include <cassert>
#include <limits>
#include <functional>
#define rep(i,n) for(int (i)=0;(i)<(int)(n);++(i))
#define rer(i,l,u) for(int (i)=(int)(l);(i)<=(int)(u);++(i))
#define reu(i,l,u) for(int (i)=(int)(l);(i)<(int)(u);++(i))
#if defined(_MSC_VER) || __cplusplus > 199711L
#define aut(r,v) auto r = (v)
#else
#define aut(r,v) __typeof(v) r = (v)
#endif
#define each(it,o) for(aut(it, (o).begin()); it != (o).end(); ++ it)
#define all(o) (o).begin(), (o).end()
#define pb(x) push_back(x)
#define mp(x,y) make_pair((x),(y))
#define mset(m,v) memset(m,v,sizeof(m))
#define INF 0x3f3f3f3f
#define INFL 0x3f3f3f3f3f3f3f3fLL
using namespace std;
typedef vector<int> vi; typedef pair<int,int> pii; typedef vector<pair<int,int> > vpii; typedef long long ll;
template<typename T, typename U> inline void amin(T &x, U y) { if(y < x) x = y; }
template<typename T, typename U> inline void amax(T &x, U y) { if(x < y) x = y; }
template<int MOD>
struct ModInt {
static const int Mod = MOD;
unsigned x;
ModInt(): x(0) { }
ModInt(signed sig) { int sigt = sig % MOD; if(sigt < 0) sigt += MOD; x = sigt; }
ModInt(signed long long sig) { int sigt = sig % MOD; if(sigt < 0) sigt += MOD; x = sigt; }
int get() const { return (int)x; }
ModInt &operator+=(ModInt that) { if((x += that.x) >= MOD) x -= MOD; return *this; }
ModInt &operator-=(ModInt that) { if((x += MOD - that.x) >= MOD) x -= MOD; return *this; }
ModInt &operator*=(ModInt that) { x = (unsigned long long)x * that.x % MOD; return *this; }
ModInt &operator/=(ModInt that) { return *this *= that.inverse(); }
ModInt operator+(ModInt that) const { return ModInt(*this) += that; }
ModInt operator-(ModInt that) const { return ModInt(*this) -= that; }
ModInt operator*(ModInt that) const { return ModInt(*this) *= that; }
ModInt operator/(ModInt that) const { return ModInt(*this) /= that; }
ModInt inverse() const {
long long a = x, b = MOD, u = 1, v = 0;
while(b) {
long long t = a / b;
a -= t * b; std::swap(a, b);
u -= t * v; std::swap(u, v);
}
return ModInt(u);
}
bool operator==(ModInt that) const { return x == that.x; }
bool operator!=(ModInt that) const { return x != that.x; }
ModInt operator-() const { ModInt t; t.x = x == 0 ? 0 : Mod - x; return t; }
};
typedef ModInt<1234567891> mint;
int main() {
//解説見た
int N; long long M;
scanf("%d%lld", &N, &M);
vector<int> A(N);
rep(i, N) scanf("%d", &A[i]);
int K = accumulate(all(A), 0);
vector<mint> dp(K * 2 + 2);
dp[0] = 1;
for(int i = 0; (1LL << i) <= M; ++ i) {
rep(j, N) {
int a = A[j];
//2^i a
for(int k = K * 2 - a; k >= 0; -- k)
dp[k + a] += dp[k];
}
int p = M >> i & 1;
rer(k, 0, K)
dp[k] = dp[k * 2 + p];
rer(k, K + 1, K * 2 + 1)
dp[k] = mint();
}
mint ans = dp[0];
printf("%d\n", ans.get());
return 0;
}
anta