#include<stdio.h>
int main(){
    int paymentAmount, accountBalance, isActive;
    int scanf = scanf("%d %d %d",&paymentAmount, &accountBalance, &isActive);
    if(scanCount !=3 || paymentAmount <0 || paymentAmount > 1000000 || accountBalance < 0 || accountBalance > 1000000 || (isActive !=0 && isActive !=1)){
        printf("Invalid input\n");
    }
    if (isActive == 0){
        printf("Account Inactive\n");
    }
    else if (paymentAmount > accountBalance){
        printf("Insufficient Balance\n");
    }
    else {
        double remainingBalance = accountBalance - paymentAmount;
        printf("%.2lf\n",remainingBalance);
    }
    return 0;
    
}