#include<stdio.h>
int main(){
    int paymentAmount,accountBalance,isActive;
    float a;
   scanf("%d",&paymentAmount);
   scanf("%d",&accountBalance);
   scanf("%d",&isActive);
  
   if(paymentAmount<0||paymentAmount>1000000||accountBalance<0||accountBalance>1000000||isActiv<0||isActive>1)
   {
      printf("Invalid input");
     
   }
   else if(accountBalance<paymentAmount){
       printf("Insufficient Balance");
   }
   else if(isActive==0)
   {
        printf("Account Inactive");
   }
   else{
   a=accountBalance-paymentAmount;
       printf("%.2F",a);
   }
   
}