#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 reamainingBalance = accountBalance -paymentAmount;
        printf("%.2f",remainingBalance);
    }
    return 0;
}