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