#include <string>
#include <vector>
#include <iostream>
#include <algorithm>
#include <functional>
#include <string>
using namespace std;

int main() {
	int n,k;
	cin >> n >> k;
	string s;
	cin >> s;
	for(int i=0;i<=n-k;i++){
		string a=s.substr(0,i);
		string b=s.substr(i,k);
		reverse(b.begin(),b.end());
		string c=s.substr(i+k,s.size());
		s=a+b+c;
	}
	cout << s << endl;
	return 0;
}