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#include <iostream>
#include <cstdio>
#include <string>
using namespace std;
int main()
{
    ios_base::sync_with_stdio();
    int n, t;
    string a;
    cin >> n >> t;
    getchar();
    getline(cin, a);
    if (t%2==0)
        cout << a;
    else
        for (int i=a.size()-1; i>=0; i--)
            putchar(a[i]);
    return 0;
}