#include <bits/stdc++.h>
using namespace std;

int main() {
    string s;
    cin >> s; 

    int m;
    cin >> m;
    m--;

    while (m--) {
        string t;
        for (int i = 0; i < s.size(); i++) {
            int c = 1;
            while (i + 1 < s.size() && s[i + 1] == s[i]) {
                c++;
                i++;
            }
            t = t + to_string(c) + s[i];
        }
        s = t;
    }
    cout << s << endl;
    return 0;
}