#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int,int>;
using vecInt = vector<int>;
using vecLong = vector<long long>;
#define rep(i,l,n) for(int i=l;i<n;i++)

const ll mod = ll(1e9) + 7;
const int INF = 1<<29;
const ll lINF = 1l<<40;

int main(){
    int n,k;
    string s;
    cin >> n >> k >> s;
    vector<char> t(n);
    rep(i,0,n) t[i] = s[i];
    rep(i,0,n-k+1){
        vector<char> x;
        for (int j=i+k-1;j>=i;j--) x.push_back(t[j]);
        rep(j,i,i+k) t[j] = x[j-i];
    }
    rep(i,0,n) cout << t[i];
    cout << "\n";
    return 0;
}