#include<stdio.h>
int main()
{ 
     int a;
     scanf("%d",&a);
     if(year=0)
      {
        if(years>=1&&years<=5)
            printf("%d",a);
        else if(years>=6&&years<=10)||(years>=10)
            printf("%d",a);
            printf("%d",a);
      }
      else 
      {
           printf("Invalid Input");
      }
      return 0;
}