#include<stdio.h>
int main(){
    int paymentAmount, accountBalance, isActive;
    if(scanf("%d",&paymentAmount)  !=1  ||
    scanf("%d",&acountBalance)  !=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 remainingBalaance = accountBalance - paynentAccount;
        printf ("%.2f",remaingBalance);
    }
    return 0;
}