#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;
}