小学生算术

code:

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

int main()
{
    int m, n;

    while (cin >> m >> n && m != 0 && n != 0)
    {
        int count = 1, t;
        int cfNum = 0, cf = 0;
        while (count <= 3)
        {
            t = m % 10 + n % 10 + cf;
            if (t >= 10)
            {
                cf = t / 10;
                cfNum ++;
            }
            m /= 10;
            n /= 10;
            count ++;
        }
        cout << cfNum << endl;
    }
    return 0;
}