#include<stdio.h>
int main()
{
    int withdrawal, balance, status;
    scanf("%d", &withdrawal);
    scanf("%d", &balance);
    scanf("%d", &status);
    if (status == 0){
        printf("Account Inactive\n");
    }
    else if (withdrawal > balance) {
        printf("Insufficient Balance\n");
    }
    else{
        double newBalance = balance - withdrawal;
        print("%.2f\n",newBalance);
    }
    
    return 0;
}