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