Untitled

#include <iostream>
#include <cmath>
using namespace std;

int main() {

    int a, doub = 0;

    cin >> a;

    int copy_a = a;
    int len_a = 0;

    while (a != 0) {
        len_a += 1;
        a /= 10;
    }
    while (len_a != 0) {
        cout << " " << (int)copy_a / (int)pow(10, len_a-1);
        copy_a %= (int) pow(10, len_a-1);
        len_a--;
     }
}