#include <stdio.h>
int size,ind,k,itr,temp;
scanf("%d%d",size,&k);
if(size<0 || k<0 || k>size)
{
    printf("invalid input");
    return0;
}
int arr[size];
for(ind=0;ind<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[])