Submission #1107619

#	Time	Username	Problem	Language	Result	Execution time	Memory
1107619		julia_08	Bank (IZhO14_bank)	C++17	52 / 100	1100 ms	8908 KiB

bank

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

const int MAXN = 21;

int a[MAXN], b[MAXN];

int dp[1 << MAXN], sum[1 << MAXN];

vector<int> v[MAXN];

int main(){
    cin.tie(0)->sync_with_stdio(0);
    
    int n, m; cin >> n >> 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 bit = __builtin_ctz(s);
        
        sum[s] = sum[s ^ (1 << bit)] + b[bit];
    }
    
    for(int i=0; i<n; i++){
        for(int s=0; s<(1 << m); s++){
            if(sum[s] == a[i]) v[i].push_back(s);
        }
    }
    
    for(int s=0; s<(1 << m); s++){
        
        int i = min(n, dp[s] + 1);
        
        for(auto x : v[i - 1]){
            
            if((x & s) == 0){
                dp[s ^ x] = max(dp[s ^ x], i);
            }
            
        }
        
    }
    
    cout << (dp[(1 << m) - 1] == n ? "YES" : "NO") << "\n";
    
    return 0;
}

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