#include<cstdio>
#define max(a,b) (((a)>(b))?(a):(b))
typedef long long ll;
int main(){
	ll a=0,b=0,x;
	int n;
	scanf("%d",&n);
	while (n--){
		scanf("%lld",&x);
		b=max(b,x);
		a+=x;
	}
	if (b>=a-b) puts("No");else puts("Yes");
}