long e[12];
long n;

void f(long a,long b,long c,long i){
	if(i==n){
		if(a==b&&a==c){
			puts("Yes");
			exit(0);
		}
	}else{
		f(a+e[i],b,c,i+1);
		f(a,b+e[i],c,i+1);
		f(a,b,c+e[i],i+1);
	}
}

main(){
	scanf("%ld",&n);
	for(long i=0;i<n;++i){
		scanf("%ld",&e[i]);
	}
	f(0,0,0,0);
	puts("No");
}