Submission #595973

#	Time	Username	Problem	Language	Result	Execution time	Memory
595973		Belphegor	Bank (IZhO14_bank)	C++14	100 / 100	624 ms	27140 KiB

bank

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int n,m;
vector<int>graph[22];
int A[22],B[22],sum[(1<<20)];
char dp[22][(1<<20)];
char f(int cur,int state){
	char&ret = dp[cur][state];
	if(~ret) return ret;
	ret = 0;
	if(cur==n) return ret = 1;
	if(A[cur]>sum[(1<<m)-1-state]) return ret;
	for(int s : graph[cur]){
		if(s&state) continue;
		ret|=f(cur+1,state|s);
	}
	return ret;
}
int main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	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=1; i<(1<<m); i++){
		int tot = 0;
		for(int j=0; j<m; j++) if(i&(1<<j)) tot+=B[j];
		for(int j=0; j<n; j++) if(A[j]==tot) graph[j].emplace_back(i);
		sum[i] = tot;
	}
	for(int i=n; i>=0; i--) A[i]+=A[i+1];
	memset(dp,-1,sizeof(dp));
	cout<<(f(0,0)?"YES":"NO");
}

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