제출 #802955

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
802955		VMaksimoski008	은행 (IZhO14_bank)	C++14	100 / 100	117 ms	16740 KiB

bank

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

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int n, m;
    cin >> n >> m;

    vector<int> need(n), money(m);
    for(int &x : need) cin >> x;
    for(int &x : money) cin >> x;

    vector<ll> done(1 << m, -1);
    vector<ll> left(1 << m, -1);
    done[0] = 0, left[0] = 0;

    for(int s=1; s<(1<<m); s++) {
        for(int i=0; i<m; i++) {
            if((s & (1 << i)) && done[s^(1<<i)] >= 0) {
                int total = left[s^(1<<i)] + money[i];
                int want = need[done[s^(1<<i)]];

                if(total == want) {
                    done[s] = 1 + done[s^(1<<i)];
                    left[s] = 0;
                } else if(total < want) {
                    done[s] = done[s^(1<<i)];
                    left[s] = total;
                }
            }
        }

        if(done[s] == n) {
            cout << "YES\n";
            return 0;
        }
    }

    cout << "NO\n";
    return 0;
}

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