#include <stdio.h>
int main(void){
  int n,l,i,max=0,s=0;
  scanf("%d",&n);
  for (i=0;i<n;i++){
    scanf("%d",&l);
    if (l>max) max=l;
    s+=l;
  }
  s-=max;
  printf("%s\n",(max<s)? "Yes":"No");
  return 0;
}