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