#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+i);
      }
      reverse(arr,n,k);
      for(int i=0;i<n;printf("%d",arr[i++]));
  }