#include <stdio.h>
int main(){
    int withdrawal;
    double balance;
    int status;
    scanf("%d %1f %d",&withdrawal,&balance,&status);
    if(status==0){
        printf("Account Inactive\n");
    }else if(withdrawal > balance){
        printf("Insufficient Balance\n");
    }
    else {
        double updated = balance - withdrawal;
        printf("%.21f\n",updated);
    }
    return 0;
}