// editor2
#include<stdio.h>
int main()
{
    int amount,balance,isActive;
    if(scanf("%d",&amount)!=1){
        printf("Invalid input");
        return 0;
    }
    
   if(scanf("%d",&balance)!=1);{
    printf("Invalid input\n");
    return 0;
   }
        if (scanf("%d",&isActive)!=1){
        printf("Invalid input\n");
        return 0;
    }
        float amt =balance-amount ;
        if(isActive ==1){
            if(balance >=amount){
                printf("%.2f",amt);
        }
        else{
            printf("Insufficient Balance ");
        }
  }
  else if (isActive==0){
      print("Account Inactive");
  }
  else{
      printf("Invalid input");
   }
   return 0;
        
}