"use strict";
const Main = (input) =>{
   let xs = input.trim().split(' ').map(v=>parseInt(v,10));
   let num = xs.sort((a,b)=>(b-a));
                     
   if(num[0]==num[1]+num[2]){
      console.log('Yes');
   }else{
      console.log('No');
   }
}
Main(require('fs').readFileSync('/dev/stdin','utf8'));