#include <bits/stdc++.h>

using namespace std;

int main() {
    int n;
    cin >> n;
    int cnt = 0;

    int m=n;
    while (m) {
        int a = m % 10;
        m /= 10;
        //个数增加1
        cnt++;
    }
    printf("%d\n",cnt);

    m=n;
    while (m) {
        int a = m % 10;
        m /= 10;
        printf("%d ", a);
    }
    return 0;
}