Submission #333026

#	Time	Username	Problem	Language	Result	Execution time	Memory
333026		nandonathaniel	Bank (IZhO14_bank)	C++14	100 / 100	527 ms	20672 KiB

bank

#include<bits/stdc++.h>
using namespace std;
const int MAXV=1005,MAXN=20;

vector<int> v[MAXV];
int a[MAXN],b[MAXN];
bool dp[MAXN][1<<MAXN];

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(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 i=0;i<(1<<m);i++){
		int uang=0;
		for(int j=0;j<m;j++){
			if((1<<j) & i)uang+=b[j];
		}
		if(uang>1000)continue;
		v[uang].push_back(i);
	}
	for(auto isi : v[a[0]])dp[0][isi]=true;
	for(int i=1;i<n;i++){
		bool ada=false;
		vector<int> bisa;
		for(int mask=0;mask<(1<<m);mask++){
			if(!dp[i-1][mask])continue;
			for(auto isi : v[a[i]]){
				if((mask&isi)==0){
					dp[i][mask|isi]=true;
					ada=true;
				}
			}
		}
		if(!ada)break;
	}
	bool yes=0;
	for(int mask=0;mask<(1<<m);mask++)yes|=dp[n-1][mask];
	if(yes)cout << "YES\n";
	else cout << "NO\n";
	return 0;
}

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