#include<stdio.h>
int main(){
    double paymentamount,accountbalance;
    int isActive;
    if(scanf("%lf %lf %d",&paymentamount, &accountbalance, &isActive)!=0);
    printf("Invalid input\n");
    return 0;
}if(paymentamount<0||paymentamount>1000000||accountbalance>1000000){
    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", ramainingbalance);
return 0;
}