#include<stdio.h>
int main(){
    int paymentAmount,accountBalence,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");
    } 
    else if(paymentAmount > accountBalance)
    {
      printf("Insufficient Balance");
    }
    else 
    {
        float remainingBalance = accountBalance - paymentAmount;
        printf("%.2f",remainingBalance);
    }
    return 0;
}