#include <iostream>
#include <cmath> /* ceil, log10 */
using namespace std;

// function declarations go here
int add_next_digit(int sum, int n);
int swap_values(int sum, int n);

int main(){

    int n;
    int sum = 0;

    cout << " ";
    cin >> n;

    while(n >= 10){

        int len = ceil(log10(n + 1));

        for(int i = 0; i < len; i++){

            cout << add_next_digit(sum, n);

            if(n > 0){
                cout << " + ";
            }
        }

        cout << " = " << sum << endl;

        swap_values(sum, n);

    };

    cout << "Single digit is: " << n << endl;

    return 0;
}

int add_next_digit(int sum, int n)
{
    while ( n > 0 ) {
        sum += n % 10;
        n /= 10;
}

int swap_values(int sum, int n)
{
    while ( n > 0 ) {
        sum += n % 10;
        n /= 10;
}