Submission #1013073

#	Time	Username	Problem	Language	Result	Execution time	Memory
1013073		aufan	Bank (IZhO14_bank)	C++17	100 / 100	82 ms	16860 KiB

bank

#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second

using namespace std;

int32_t main()
{
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        
        int n, m;
        cin >> n >> m;

        vector<int> a(n);
        for (int i = 0; i < n; i++) cin >> a[i];

        vector<int> b(m);
        for (int i = 0; i < m; i++) cin >> b[i];

        vector<pair<int, int>> dp(1 << m, {-1, -1});
        dp[0] = {0, 0};
        for (int mask = 1; mask < (1 << m); mask++) {
                for (int i = 0; i < m; i++) {
                        if (mask >> i & 1) {
                                auto [j, x] = dp[mask ^ (1 << i)];
                                if (j == -1) continue;

                                if (x + b[i] < a[j]) dp[mask] = {j, x + b[i]};
                                else if (x + b[i] == a[j]) dp[mask] = {j + 1, 0};
                        }
                }

                if (dp[mask].fi == 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