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