#include<stdio.h>
int main(){
    int n, k;
    scanf("%d %d", &n, &k);
    if (n <= 0 || k < 0 || k > n){
        printf("Invalid Input");
        return 0;
    }
    int a[n];
    for (int i = 0; i < n; i++)
    scanf("%d", &a[i]);
    for (int i = 0; j = k - 1; i < j; i++, j--){
        int t = a[i];
        a[i] = a[j];
        a[j] = t;
    }
    for (int i = 0; i < n; i++)
    printf("%d", a[i]);
    return 0;
}