Problem 7. Sum of greatest and smallest

let input = [
    '1',  // the input is always a string, so it's '3' and not 3
    '2',
    '3',

];
let print = this.print || console.log;
let gets = this.gets || ((arr, index) => () => arr[index++])(input, 0);

let num1 = +gets();
let num2 = +gets();
let num3 = +gets();

let greatNum = Math.max(num1, num2, num3);
let smallestNum = Math.min(num1, num2, num3);

let sum = greatNum + smallestNum;

print(sum);