#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <map>
#include <string>
#include <vector>
#include <set>
#include <queue>
#include <deque>
#include <stack>
#include <algorithm>
#include <unordered_map>
using namespace std;
int main(){
string s;
cin>>s;
int k;
cin>>k;
for (int i = 0; i < s.size(); i += 2 * k) {
reverse(s.begin() + i, min(s.begin() + i + k, s.end()));
}
cout<<s<<endl;
}
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