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