#include <stdio.h>
int main(void){
int a,b,c;
  scanf("%d %d %d",&a,&b,&c);
  if(a>=b&&a>=c){if(a=(b+c){printf("Yes");}else{printf("No");}}
if(b>=c&&b>=a){if(b=(a+c){printf("Yes");}else{printf("No");}}
if(c>=b&&c>=a){if(c=(b+a){printf("Yes");}else{printf("No");}}
return 0;
}