제출 #1272532

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1272532		zagaro	은행 (IZhO14_bank)	C++20	0 / 100	214 ms	327680 KiB

bank

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
/**zagaro & lauren <3**/
#define mod 1000000007 //1e9 + 7
#define pi acos(-1)
#define wl while
#define str string
#define ENDL "\n"
#define sal ' '
#define tp_set ll
#define prc(n) cout.precision(n);cout<<fixed;
#define ord_set tree<tp_set, null_type, less<tp_set>, rb_tree_tag, tree_order_statistics_node_update>
typedef long long ll;
typedef bool bl;
typedef char car;
using namespace std;
using namespace __gnu_pbds;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    freopen("bank.in", "r", stdin);
    freopen("bank.out", "w", stdout);
    int n, m;
    bl B=false;
    cin>>n>>m;
    vector<int> vec(n+2, 0);
    vector<int> bil(m);
    vector<int> sum((1<<m), 0);
    vector<int> prf(n+2, 0);
    vector<vector<bl> > dp(n+2, vector<bl> ((1<<m), false));
    dp[0][0] = true;
    for(int i=1;i<=n;i++)cin>>vec[i];
    for(int i=0;i<m;i++)cin>>bil[i];
    for(int i=1;i<=n;i++)prf[i]+=prf[i-1]+vec[i];
    for(int i=0;i<(1<<m);i++){
        for(int k=0;k<m;k++){
            if((i&(1<<k)) != 0){
                sum[i]+=bil[k];
            }
        }
    }
    for(int i=0;i<=n;i++){
        for(int j=0;j<(1<<m);j++){
            if(dp[i][j] && sum[j] == prf[i]){
                dp[i+1][j] = true;
            }
            else if(dp[i][j]){
                for(int k=0;k<m;k++){
                    if((j&(1<<k)) == 0 && sum[j&(1<<k)]+bil[k] <= prf[i]){
                        dp[i][j^(1<<k)] = true;
                    }
                }
            }
        }
    }
    for(int i=0;i<(1<<m);i++){
        if(dp[n][i] && sum[i] == prf[n]){
            B=true;
            break;
        }
    }
    if(B)cout<<"YES\n";
    else cout<<"NO\n";
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp: In function 'int main()':
bank.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     freopen("bank.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:22:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |     freopen("bank.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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