#include<stdio.h>
int main(){
    int pay,bal,active;
    scanf("%d",&paymentamount);
    scanf("%d",&accountbalance);
    scanf("%d",&isactive);
    if(pay < 0 || pay > 100000 || bal > 1000000 || (active != 0 && active !=1)) {
        printf("Invalid Input");
    }else if(active == 0) {
        printf("Account Inactive");
    }else if(pay > bal) {
        printf("Insufficient Balance");
    }else {
        printf("%.2f",(float)(bal-pay));
    }
    return 0;
}