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

string solve(string s , int r)
{

    if (r == 1) return "";

    string ans = "";

    stack<pair<char, int> > stack;

    for (int i = 0; i < s.length(); i++) {

        if (stack.empty()) stack.push({s[i], 1});

        else {

            if (s[i] == stack.top().first) {

                stack.push( { s[i], stack.top().second + 1 } );

                if (stack.top().second == r) {
                    int temp = r;
                    while (temp) {
                        stack.pop();
                        temp--;
                    }
                }
            }
            else  stack.push({s[i], 1});

        }
    }

    while (!stack.empty()) {
        ans += stack.top().first;
        stack.pop();
    }
    reverse(ans.begin(), ans.end());
    return ans;
}


int main()
{

    string s;
    cin>>s;
    int r;
    cin>>r;
    cout << solve(s,r);

    return 0;
}