let input = [
    '3,-12,0,0,13,5,1,0,-2',
];

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

let list = gets().split(',').map(Number);
let all = [];
// all = [list.length];

let bellow = [];
let above = [];
let zero = [];

if (list.length >= 1 && list.length <= 20) {
    for (i = 0; i < list.length; i++) {
        all[i] = (list[i]);
    }

    for (i = 0; i < all.length; i++) {
        if (all[i] < 0) {
            bellow.push(all[i]);
        } else if (all[i] > 0) {
            above.push(all[i]);

        } else if (all[i] == 0) {
            zero.push(all[i]);

        }
    }
}

let output = [];
output.push(bellow);
output.push(zero);
output.push(above);

console.log(output.join(','));