제출 #839205

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
839205		Alfraganus	은행 (IZhO14_bank)	C++17	0 / 100	0 ms	212 KiB

bank

#include <bits/stdc++.h>
using namespace std;

#define printmp(a) for(auto x : a)  cout << x.first << ' ' << x.second << endl;

int main(){
    freopen("bank.in", "r", stdin);
    freopen("bank.out", "w", stdout);
    int n, m;
    cin >> n >> m;
    vector<int> b(n);
    for (int i = 0; i < n; i++)
        cin >> b[i]; // debt
    vector<int> a(m);
    for(int i = 0; i < m; i ++)
        cin >> a[i]; // tenges
    vector<pair<int, int>> dp((1 << m) + 1);
    for(int i = 0; i <= (1 << m); i ++){
        pair<int, int> best = {0, 0};
        for(int j = 0; j < m; j ++){
            if((i & (1 << j)) == (1 << j)){
                if(b[dp[i ^ (1 << j)].first] - dp[i ^ (1 << j)].second > a[j])
                    best = max(best, {dp[i ^ (1 << j)].first, dp[i ^ (1 << j)].second + a[j]});
                if (b[dp[i ^ (1 << j)].first] - dp[i ^ (1 << j)].second == a[j])
                    best = max(best, {dp[i ^ (1 << j)].first + 1, 0});
            }
        }
        if(best.first == n){
            cout << "YES";
            return 0;
        }
        dp[i] = best;
    }
    cout << "NO";
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp: In function 'int main()':
bank.cpp:7:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     freopen("bank.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:8:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     freopen("bank.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29