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