function foldAndSum(input) {
    var numbers = [];
    var num = input.split(" ");
    for (var i = 0; i < num.length; i+= 1){
        numbers.push(parseInt(num[i]));
    }
    var row1 = [];
    for (var k = numbers.length / 4 -1; k >= 0; k--){
        row1.push(numbers[k]);
    }
    for (var j = numbers.length - 1; j >= numbers.length - numbers.length / 4; j--){
        row1.push(numbers[j]);
    }
    var row2 = [];
    for (var m = numbers.length / 4; m < numbers.length - numbers.length / 4; m+= 1){
        row2.push(numbers[m]);
    }
    var result = [];
    for (var f = 0; f < row1.length; f+= 1){
     result.push(row1[f] + row2[f]);
    }
    console.log(result.join(" "));
}