#include<stdio.h>
int main()
{
    int a,b,c;
  if(scanf("%d %d %d",&a,&b,&c) !=3)
  { 
      printf("Invalid input");
      return 0;
  }
  if(a<=0 || a>=1000000 || b<=0 || b>=1000000 || (c !=0&& c i=1))
  {
      printf("invalid intput\n");
      return 0;
  }
  if(c==0)
  {
      printf("Account Inactive\n");
      return 0;
  }
  if(a>b)
  {
      printf("Insufficient Balance");
      return 0;
      
  }
  float remainingBalance = b-a;
  printf("%.2f\n",remainingBalance);
  
  
  
  return 0;
}