// editor2
#include<stdio.h>
void main()
{
   int x,y,z;
   
   if(scanf("%d",&x)!=1||
      scanf("%d",&y)!=1||
      scanf("%d",&z)!=1)
    {
      printf("Invalid input");
      return 0;
    }
   if(z!=1&&z!=0)
    {
      printf("Invalid input");
      return 0;
    }
   if(z==0) 
    {
      printf("Account Inactive");
    }
   else if(x>y)
    {
      printf("Insufficient Balance");
    }
   else
    {
      float remaining=y-x;
      printf("%.2f",remaining);
    }
  return 0;    
       
}