Submission #679282

#	Time	Username	Problem	Language	Result	Execution time	Memory
679282		Hacv16	Bank (IZhO14_bank)	C++17	52 / 100	1095 ms	7820 KiB

bank

#include<bits/stdc++.h>
using namespace std;
 
const int MAX = 21;
const int MAXM = 50005;
const int INF = 0x3f3f3f3f;
 
int n, m, a[MAX], b[MAX];
bool dp[MAX][1 << MAX];
vector<int> g[MAXM];
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
 
    cin >> n >> m;
 
    for(int i = 1; i <= n; i++) cin >> a[i];
    for(int i = 0; i < m; i++) cin >> b[i];
 
    for(int mask = 0; mask < (1 << m); mask++){
        int cur = 0;
        for(int i = 0; i < m; i++)
            if(mask & (1 << i)) cur += b[i];
        g[cur].emplace_back(mask);
    }
 
    dp[0][0] = true;
 
    for(int i = 1; i <= n; i++){
        for(int mask = 0; mask < (1 << m); mask++){
            for(auto sub : g[a[i]]){
                if((mask & sub) != sub) continue;
                dp[i][mask] |= (dp[i - 1][mask ^ sub]);
            }
        }
    }
 
    bool pos = false;
 
    for(int mask = 0; mask < (1 << m) && !pos; mask++)
        pos |= dp[n][mask];
 
    cout << (pos ? "YES" : "NO") << '\n';
 
    return 0;
}

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