gistfile1.cpp

#include<cstdio>
#include<iostream>

using namespace std;

bool dfs(int, int);

void solve(int);


int a[50];
int n, k;


int main(){
	
	
	scanf("%d\n", &n);
	
	for( int i = 0; i <= n-1; i++){
		scanf("%d", &a[i]);
	}
	
	
	scanf("%d\n", &k);
	
	dfs(0, 0);
	
	
	if(dfs(0, 0)) printf("Yeah!\n");
	else printf("No\n");
	
	return 0;
	
	
}



bool dfs(int e, int sum){
	
	if(e1 == n) return sum == k;
	
	if(dfs(e + 1, sum)) return true;
	
	if(dfs(e + 1, sum + a[e])) return true;
	
	return false;
	
}