#include <stdio.h>
void reverse(int *arr, int n , int k){
    int start =0;
    int end = k-1;
    while(start<end){
     int temp = *(arr + start);
     *(arr + start) = *(arr + end);
     *(arr + end) = temp;
     start++;
     end--;
    }
}
int main(){
    int n ,k;
    scanf("%d %d",&n,&k);
    if(n<0 || k<0 || k>n){
        printf("invalid input");
        return 0;
    }
    int arr[n];
    for(int i=0;i<n;i++);
        scanf("%d",arr+1);
    }
     reverse(arr,n,k);
     for(int i = 0;i<n;printf("%d",arr[i++]));
}