Submission #1190701

#	Time	Username	Problem	Language	Result	Execution time	Memory
1190701		hikari1234	Bank (IZhO14_bank)	C++20	100 / 100	110 ms	33268 KiB

bank

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
int n,m;
int a[25], b[25];
vector<pair<int,int>> dp((1<<21),{-1,-1});
signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    dp[0]={0,0};
    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 i=0; i<(1<<m); i++){
		int sum=0;
		for(int j=0; j<m; j++){
			if((i&(1<<j))){
				int prev=(i^(1<<j));
				if(dp[prev].ss==-1) continue;
				int left=dp[prev].ff;
				int now=left+b[j];
				int idx=dp[prev].ss;
				if(now==a[idx]){
					dp[i]={0,idx+1};
				}
				else if(now<a[idx]){
					dp[i]={now,idx};
				}
				if(dp[i].ss==n){
					cout<<"YES"<<endl;
					return 0;
				}
			}		
		}
	}
	cout<<"NO"<<endl;
}

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