Submission #1001641

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001641		ara_ara	Bank (IZhO14_bank)	C++17	100 / 100	81 ms	17092 KiB

bank

#include <bits/stdc++.h>
#define int long long
using namespace std;
const int maxn=(1<<20);
int n,m,a[21],b[21];
pair<int,int> dp[maxn];
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    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 mask=0;mask<(1<<m);mask++){
        if(dp[mask].first==n){
            cout<<"YES";
            return 0;
        }
        if(dp[mask].first==0 && dp[mask].second==0 && mask!=0) continue;
        for(int i=0;i<m;i++){
            if((mask>>i & 1)==0){
                int nxt=mask^(1<<i);
                if(dp[mask].second+b[i]>a[dp[mask].first]) continue;
                dp[nxt].second=dp[mask].second+b[i];
                dp[nxt].first=dp[mask].first;
                if(dp[nxt].second==a[dp[nxt].first]){
                    dp[nxt].first++;
                    dp[nxt].second=0;
                }
            }
        }
    }
    cout<<"NO";
}

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