Submission #1181966

#	Time	Username	Problem	Language	Result	Execution time	Memory
1181966		FaresSTH	Bank (IZhO14_bank)	C++20	0 / 100	1 ms	328 KiB

bank

#include"bits/stdc++.h"
using namespace std;
int n,m,a[25],b[25],f[1001],cur[1001],pre[(1<<20)];
vector<pair<int,int>>s;
void sol(int i,int used){
    if(i==n){
        for(int j=0;j<n;j++){
            if(cur[a[j]]<f[a[j]])return;
        }
        cout<<"YES";
        exit(0);
    }
    for(auto[sum,mask]:s){
        if(used&mask==0&&cur[sum]<f[sum]){
            cur[sum]++;
            sol(i+1,used|mask);
            cur[sum]--;
        }
    }
}
int main(){
    cin.tie(0)->sync_with_stdio(0);
    cin>>n>>m;
    for(int i=0;i<n;i++){
        cin>>a[i];
        f[a[i]]++;
    }
    for(int i=0;i<m;i++)cin>>b[i];
    for(int mask=0;mask<(1<<m);mask++){
        int sum=0;
        for(int j=0;j<m;j++){
            if(mask&(1<<j))sum+=b[j];
        }
        if(f[sum])s.emplace_back(sum,mask);
    }
    sol(0,0);
    cout<<"NO";
}

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