#include <stdio.h>

int main() {
    int n, k;
    scanf("%d %d", &n, &k);
   }
    
    if (n < 0 || k < 0 || k > n) {
        printf("Invalid Input\n");
        return 0;
    }
    
    int arr[n];
    for (int i = 0; i < n; i++)
    scanf("%d", &arr[i]);
    
    // Reverse first k elements
    for (int i =0, j = k - 1; i < j; i++, j--) {
        int temp = arr[i];
        arr[i] = arr[j];
        arr[j] = temp;
    }
    
    //  print the modified array
    for (int i = 0; i < n; i++)
         printf("%d", arr[i]);
         
    return 0;
}