#include<stdio.h>
//#include<conio.h>

int main()
{
    int = n;
    ID = (-1000 to 1000);
    {
      if(ID = " ")  
      {
          printf("Duplicate IDs");
          scanf("%d",&n);
      }
      if(ID != -1000 to 1000)
      {
          printf("No Duplicates Found");
          scanf("%d",&n);
      }
      if(n < 1)
      {
          printf("Invalid input");
          scanf("%d",&n);
      }
    }
    return 0;
    
}