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