#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");
    return 0;
}
if (accountBalance < paymentAmount){
    printf("Incensufficient Bala");
    return 0;
}
float newBalance = accountBalance -paymentAmount;
printf("%.2f", newBalance);