Submission #1035738

#	Time	Username	Problem	Language	Result	Execution time	Memory
1035738		vanea	Bank (IZhO14_bank)	C++14	100 / 100	763 ms	6972 KiB

bank

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

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<int> a(n), b(m);
    for(int i = 0; i < n; i++) {
        cin >> a[i];
    }
    for(int i = 0; i < m; i++) {
        cin >> b[i];
    }
    vector<vector<int>> sum(1005);
    for(int i = 0; i < (1 << m); i++) {
        int curr = 0;
        for(int j = 0; j < m; j++) {
            if(i & (1 << j)) curr += b[j];
        }
        if(curr <= 1000) sum[curr].push_back(i);
    }
    vector<bool> dp(1 << m), prev(1 << m);
    dp[0] = true;
    for(int i = 0; i < n; i++) {
        swap(dp, prev);
        fill(dp.begin(), dp.end(), false);
        for(auto mask : sum[a[i]]) {
            for(int mask1 = mask; mask1 < (1 << m); ++mask1 |= mask) {
                if(prev[mask1^mask]) {
                    dp[mask1] = true;
                }
            }
        }
    }
    bool ans = false;
    for(int i = 0; i < (1 << m); i++) {
        if(dp[i]) {
            ans = true;
        }
    }
    cout << (ans ? "YES" : "NO");
    return 0;
}

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