Submission #1073106

#	Time	Username	Problem	Language	Result	Execution time	Memory
1073106		vjudge1	Bank (IZhO14_bank)	C++17	0 / 100	1 ms	348 KiB

bank

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define ff first
#define ss second
#define pb push_back

const ll MOD=1000000007;
int n,m,a[20],b[20];
unordered_map<ll,bool>was[21];
vector<int>v[1001];

bool f(int cur=0, int used=0){
	if(was[cur][used]) return 0;
	if(cur==n) return 1;
	was[cur][used]=1;
	for(int y:v[a[cur]]) if(y&used==0) if(f(cur+1,used+y)) return 1;
	return 0;
}

void solve(){
	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 sum=0;
		for(int j=0; j<m; j++) if((1<<j)&i) sum+=b[j];
		if(sum<=1000) v[sum].pb(i);
	}
	if(f()) cout<<"YES";
	else cout<<"NO";
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t=1;
//	cin>>t;
	for(int _=0; _<t; _++){
//		cout<<"Case "<<_+1<<":\n";
		solve();
	}
	return 0;
}

//080129552180

Compilation message (stderr)

bank.cpp: In function 'bool f(int, int)':
bank.cpp:18:32: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   18 |  for(int y:v[a[cur]]) if(y&used==0) if(f(cur+1,used+y)) return 1;
      |                            ~~~~^~~

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