Submission #1176974

#	Time	Username	Problem	Language	Result	Execution time	Memory
1176974		GoBananas69	Bank (IZhO14_bank)	C++20	25 / 100	2 ms	840 KiB

bank

#include <algorithm>
#include <iostream>
#include <vector>

using namespace std;
typedef long long ll;

ll n, m;

void solve(ll mask, ll curr, vector<vector<ll>> &sums, vector<ll> &a) {
    if (curr == n) {
        cout << "YES\n";
        exit(0);
    }
    for (ll &i: sums[a[curr]]) {
        if (mask & i) continue;
        solve(mask | i, curr + 1, sums, a);
    }
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> m;
    vector<ll> a(n), b(m);
    ll mx = 0;
    if (n > m) {
        cout << "NO\n";
        return 0;
    }
    for (ll &i: a) cin >> i;
    for (ll &i: b) {
        cin >> i;
        mx += i;
    }
    vector<vector<ll>> sums(mx + 1);
    for (ll i = 0; i<(1 << m); ++i) {
        ll curr = 0;
        for (ll j = 0; j<m; ++j) {
            if ((1 << j) & i) curr += b[j];
        }
        sums[curr].push_back(i);
    }
    for (ll i = 0; i<n; ++i) {
        if (sums[a[i]].empty()) {
            cout << "NO\n";
            return 0;
        }
    }
    solve(0, 0, sums, a);
    cout << "NO\n";
}

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