#include <stdio.h>
void main() {
    int paymentAmount, accountBalance, isActive;
    
    if (scanf("%d %d %d", &paymentAmount, &accountBalance, &isActive) != 3) {
        printf("Invalid input\n");
        return 0;
    }
    
    if (isActive != 1 && isActive != 0) {
        printf("Invalid input\n");
    }
    
    else if (isActive == 0) {
        printf("Account Inactive\n");
    }
    else if (paymentAmount > accountBalance) {
        printf("Insufficient Balance\n");
    }
    
    else if (paymentAmount < 0 || accountBalance < 0) {
        printf("Invalid input\n");
    }
    
    else {
        float remainingBalance = accountBalance - paymentAmount;
        printf("%.2f\n", remainingBalance);
    }
}