#include<stdio.h>
int main()
{
    int paymentAmount,accountBalance,isActive;
scanf ("%d",&paymentAmount);
scanf ("%d",&accountBalance);
scanf ("%d",&isActive);
if (paymentAmount<=0||paymentAmount>10^6||accountBalance<=0||accountBalance>10^6||(isActive !=0&&isActive !=1))
{
    printf ("Invalid input\n");
}
return 1;
}
if (isActive==0)
{
    printf ("Account Inactive\n");
}
else if (accountBalance < paymentAmount)
{
    printf ("Insufficient Balance\n");
}
else
{
    double remainingBalance = (double)accountBalance - paymentAmount;
    printf("%.2f\n",remainingBalance);
}
return 0;
}