제출 #778891

#제출 시각아이디문제언어결과실행 시간메모리
778891magician은행 (IZhO14_bank)C++11
100 / 100
107 ms8524 KiB
#include<iostream> #define MASK(x) (1LL << (x)) #define BIT(x, i) (((x) >> (i)) & 1) using namespace std; const int N = 20; int n, m; int a[N], b[N]; int f[MASK(N)], g[MASK(N)]; int main(void) { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); cin >> n >> m; for(int i = 0; i < n; i++) { cin >> a[i]; } for(int i = 0; i < m; i++) { cin >> b[i]; } for(int mask = 0; mask < MASK(m); mask++) { f[mask] = g[mask] = -1; } f[0] = 0; g[0] = 0; for(int mask = 1; mask < MASK(m); mask++) { for(int i = 0; i < m; i++) { if(!BIT(mask, i)) continue; if(f[mask ^ MASK(i)] == -1) continue; int new_amt = g[mask ^ MASK(i)] + b[i]; int tar_amt = a[f[mask ^ MASK(i)]]; if(new_amt < tar_amt) { if(f[mask] <= f[mask ^ MASK(i)]) { f[mask] = f[mask ^ MASK(i)]; g[mask] = new_amt; } } else if(new_amt == tar_amt) { if(f[mask] < f[mask ^ MASK(i)] + 1) { f[mask] = f[mask ^ MASK(i)] + 1; g[mask] = 0; } } } if(f[mask] == n) { cout << "YES"; return 0; } } cout << "NO"; }
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