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