declare function require(x: string): any;

const input: string = require('fs').readFileSync('/dev/stdin', 'utf8')

// const input: string = require('fs').readFileSync('./input.txt', 'utf8')


const nums = input.split(" ").map(num => Number(num))

const normalize = nums.sort()

if (normalize[0] + normalize[1] === normalize[2]) {
  console.log("Yes")
}
else {
  console.log("No")
}