Submission #330704

#	Time	Username	Problem	Language	Result	Execution time	Memory
330704		hakanai	Bank (IZhO14_bank)	C++17	100 / 100	539 ms	8684 KiB

bank

// https://oj.uz/problem/view/IZhO14_bank

#include <bits/stdc++.h>

using namespace std;

vector<int> mp[1005];
bool used1[1<<20], used2[1<<20];
int main() {
    ios::sync_with_stdio(false);
    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];
    for ( int s=1; s<1<<m; s++ ) {
        int res = 0;
        for ( int i=0; i<m; i++ ) {
            if ( s>>i&1 ) res += b[i]; 
        }
        if ( res<1005 ) mp[res].push_back(s); 
    }
    used1[0] = 1;
    for ( int i=0; i<n; i++ ) {
        bool b = false;
        memset(used2, 0, sizeof(used2));
        for ( int s=0; s<1<<m; s++ ) {
            if ( !used1[s] ) continue;
            for ( int t:mp[a[i]] ) {
                if ( (s&t)==0 ) {
                    used2[s|t] = 1;
                    b = true;
                }
            }
        }
        if ( !b ) {
            cout << "NO" << '\n';
            return 0;
        }
        swap(used1, used2);
    }
    cout << "YES" << '\n';
    return 0;
}

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