#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 - paymentAccount;
         printf("%.2f",remainingBalance);
     }
     return 0;
}