'use strict';

function Main(input) {
    const tmp = input.split('\n')[0];
    const a = parseInt(tmp.split(' ')[0], 10);
    const b = parseInt(tmp.split(' ')[1], 10);
    const c = parseInt(tmp.split(' ')[2], 10);

    if (a + b == c || a + c == b || b + c == a) {
        console.log("Yes");
    } else {
        console.log("No");
    }
}

Main(require('fs').readFileSync('/dev/stdin', 'utf8'));