Submission #672413

#	Time	Username	Problem	Language	Result	Execution time	Memory
672413		moday_morning	Bank (IZhO14_bank)	C++17	100 / 100	88 ms	16752 KiB

bank

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

void solve() {
    int n, m;
    cin >> n >> m;
    vector <int> a(n), vm(m), b((1 << m)), dp((1 << m), -1);
    for(int i = 0; i < n; i++) {
        cin >> a[i];
    }
    for(int j = 0; j < m; j++){
        cin >> vm[j];
    }
    dp[0] = 0;
    b[0] = 0;
    for (int s = 1; s < (1 << m); s++) {
        for (int i = 0; i < m; i++){
            if ((s & (1 << i))) {
                int pr = s - (1 << i);
                if (dp[pr] == n) {
                    dp[s] = n;
                    break;
                }
                if (dp[pr] == -1) {
                    continue;
                }
                if (b[pr] + vm[i] < a[dp[pr]]) {
                    dp[s] = dp[pr];
                    b[s] = b[pr] + vm[i];
                    break;
                }
                if (b[pr] + vm[i] == a[dp[pr]]) {
                    dp[s] = dp[pr] + 1;
                    b[s] = 0;
                    break;
                }
 
            }
        }
    }
    if (dp[(1 << m) - 1] == n) {
        cout << "YES\n";
    }
    else {
        cout << "NO\n";
    }
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t = 1;
//    cin >> t;
    while (t--) {
        solve();
    }
}

/*
3
0 0 0
9 8 5 7
 */

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