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