#include<stdio.h>
int main(){
    long paymentAmount,accountBalance;
    int isActive;
    if(scanf("%ld",&paymentAmount)!=1||scanf("%ld",&accountBalance)!=1||scanf("%d",&isActive)!=1))
  {  
    printf("Invalid input");
    return 0;
}
if(paymentAmount<0||paymentAmount>1000000||accountBalance<0||accountBalance>1000000||(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;
}
double remainingBalance= accountBalance-paymentAmount;
printf("%.2f",&remainingBalance);
return 0;
}