#include<stdio.h>
int main()
{
    int paymentAmount,accountBalance,isActive;
    if(scanf("%d%d%d",&paymentAmount,&accountBalance,7isActive)!=3){
        printf("Invalid input");
        return 0;
    }
    if(paymentAmount<0|| paymentAmount>1000000||accountBalance,0||accountBalance.100000||(isActive !=0 && isActive !=100))
    
    {
        printf("Invalid input");
        return 0;
        
    }
     if(isActive==0)
     {
        printf("Account Inactive");
        return 0;
    
    }
    if(accountBalance<paymentamount)
    {
     printf("Insufficient balance");
     return 0;
    }
    float newBalance = (float)(accountBalance-paymentAmount);
    printf("%.2f",newBalance);
    return 0;
}