Submission #1107509

#	Time	Username	Problem	Language	Result	Execution time	Memory
1107509		vjudge1	Bank (IZhO14_bank)	C++17	100 / 100	142 ms	23580 KiB

bank

#include <bits/stdc++.h>

using namespace std;

#define nl '\n'
#define pb push_back

const int N = 1e5 + 1;
int n, m, a[21], b[21];
bool us[21][(1 << 20)];
vector< int >mp[N];

void rec( int i, int sum )
{
    if( us[i][sum] )
        return;
    us[i][sum] = true;
    if( i == n )
    {
        cout <<"YES\n";
        exit(0);
    }
    for( int x: mp[a[i]] )
        if( sum + x == (sum | x) )
            rec(i + 1, sum + x);
}

void solve()
{
    cin >>n >>m;
    for( int i = 0; i < n; ++i )
        cin >>a[i];
    for( int j = 0; j < m; ++j )
        cin >>b[j];
    for( int mask = 0; mask < (1 << m); ++mask )
    {
        int sum = 0;
        for( int i = 0; i < m; ++i )
            if( (1 << i) & mask )
                sum += b[i];
        mp[sum].pb( mask );
    }
    rec(0, 0);
    cout <<"NO\n";
}


signed main() 
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    int T = 1;
    // cin >>T;
    while( T-- )
        solve();
}

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