제출 #1164493

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1164493		s3yoonpark	은행 (IZhO14_bank)	C++20	0 / 100	0 ms	328 KiB

bank

#include <bits/stdc++.h> 
#define ssize(x) (int)x.size() 
using namespace std; 
const int N = 21; 
int n, m; 
int a[N], b[N]; 
bool dp[N][1 << N]; 
vector<int> config[1001]; 
void solve() {
  cin >> n >> m; 
  for (int i = 1; i <= n; i++) cin >> a[i]; 
  for (int i = 1; i <= m; i++) cin >> b[i]; 
  for (int i = 0; i < (1 << m); i++) {
    int sum = 0; 
    for (int j = 0; j < m; j++) {
      if ((1 << j) & i) {
        sum += b[j + 1]; 
      }
    }
    config[i].push_back(sum); 
  }
  dp[0][0] = true; 
  for (int i = 1; i <= n; i++) {
    int e = a[i]; 
    for (int j = 0; j < (1 << m); j++) {
      if (!dp[i - 1][j]) continue; 
      for (int c : config[e]) {
        bool works = true; 
        for (int k = 0; k < m; k++) {
          bool inj = (1 << k) & j; 
          bool inc = (1 << k) & c; 
          if (inc && inj) works = false; 
        }
        if (works) {
          dp[i][j | c] = dp[i - 1][j]; 
        }
      }
    }
  }
  int ans = 0; 
  for (int i = 0; i < (1 << m); i++) {
    ans |= dp[n][i]; 
  }
  cout << (ans ? "YES\n" : "NO\n"); 
}
int main() {
  freopen("bank.in", "r", stdin); 
  freopen("bank.out", "w", stdout); 
  solve(); 
  return 0; 
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp: In function 'int main()':
bank.cpp:47:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |   freopen("bank.in", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:48:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |   freopen("bank.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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