#include<stdio.h>
int main ()
{
    int payamt;
    int accbal;
    int isact;
    if(scanf("%d",&payamt)!=1)
    {
        printf("Invaild input");
        return 0;
    }
    if(scanf("%d",&accbal)!=1)
    {
        printf("Invaild input");
        return 0;
    }
    if (scanf("%d",&isact)!=1)
    {
        printf("invaild input");
        return 0;
    }
float a=accbal-payment;
if(payment>accbal)
{
    printf("Insufficient Balanace");       
}
else if(isact==0)
{
    printf("Account Inactive");
}
else
{
    printf("%.2f",a);
}
return 0;
}