Submission #961589

#	Time	Username	Problem	Language	Result	Execution time	Memory
961589		blacktulip	Bank (IZhO14_bank)	C++17	71 / 100	1050 ms	172892 KiB

bank

#include<bits/stdc++.h>
 
using namespace std;
 
#define int long long
#define pb push_back
#define fi first
#define se second
 
const int li=21;
int n,m,a[li],b[li],dp[li][(1<<20)];

inline int f(int sira,int mask){
	int cevv=0;
	if(sira>n)return 1;
	if(~dp[sira][mask])return dp[sira][mask];
	vector<int> v;
	for(int i=0;i<m;i++){
		if(mask&(1<<i))continue;
		v.pb(i);
	}
	int siz=v.size();
	for(int i=0;i<(1<<siz);i++){
		int sum=0;
		int mask2=0;
		for(int j=0;j<siz;j++){
			if(i&(1<<j)){
				sum+=b[v[j]];
				mask2|=(1<<v[j]);
			}
		}
		//~ cout<<sum<<" () "<<sira<<" () "<<i<<endl;
		if(sum==a[sira])cevv=max(cevv,f(sira+1,mask|mask2));
	}
	return dp[sira][mask]=cevv;
}

int32_t main(){
	cin>>n>>m;
	memset(dp,-1,sizeof(dp));
	for(int i=1;i<=n;i++)cin>>a[i];
	for(int i=0;i<m;i++)cin>>b[i];
	int cev=f(1,0);
	if(cev)cout<<"YES\n";
	else cout<<"NO\n";
}

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