제출 #1089150

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1089150		vjudge1	은행 (IZhO14_bank)	C++17	0 / 100	2 ms	360 KiB

bank

/**
 *    data : 09.07.2024  
 *     
**/
#include <bits/stdc++.h>
// #include "algo/turnikmen.h"

using namespace std;


#define int long long
#define bitt __builtin_popcountll
#define bitzero __builtin_clz

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

void fReopen () {
        #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
        #endif
}

const int N = 2e5 + 4;
int n, m, a[N], b[N], ok, x, used[N]; 

void solve (int id, int res) {
        if (res > x) return;
        used[res] = 1;
        for (int i = id; i < m; i++) {
                solve(i + 1, b[i] + res);
        }
}
signed main (/*  time : 9:17 AM   */) {
        ios_base::sync_with_stdio(false);
        cin.tie(nullptr);
        cout.tie(nullptr);

        fReopen();

        cin >> n >> m; 

        cin >> x;
        for (int i = 0; i < m; i++) cin >> b[i];
        for (int i = 0; i < m; i++) solve(i + 1, b[i]);

        // solve(0, 0);
        
        cout << (used[x] ? "YES\n" : "NO\n");

}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp: In function 'void fReopen()':
bank.cpp:20:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:21:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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