#define _USE_MATH_DEFINES
#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
using namespace std;
typedef long long ll;
const int mod=998244353;
int main(){
	int n,k;
	string s;
	cin>>n>>k>>s;
	rotate(s.begin(),s.begin()+k-1,s.end());
	if((n-k)%2==0)
		reverse(s.end()-k+1,s.end());
	cout<<s<<endl;
}