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