#include <stdio.h>
#include <stdlib.h>


int main()
{

    int mas[15] = {1,45,2,56,23,65,322,65,1,32,5,23,6,78,65},search2;
    scanf("%d",&search2);


    for (int i = 0; i < 15; i++)
    {
        if(search2 == mas[i])
        {
            printf("IndexOf: %d \n",i+1);
            break;

        }
         if(i == 14 && search2 != mas[i])
        {
            printf("IndexOf: -1\n");
        }
    }




      for (int i = 14; i > -1; i--)
       {
           if (search2 == mas[i])
           {
               printf("LastIndexOf: %d ",abs(i+1-15));
               break;

           }

         else if(i == 0 && search2 != mas[i])
        {
            printf("LastIndexOf: -1\n");
        }
       }

    return 0;
}