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