#include<stdio.h>
int main {
    int paymentAmount, accountBalance,isActive;
    if (scanf ("%d %d %d" ,&paymentAmount, &accountBalance, &isActive) != 3)  { 
        printf("Invalid input\n");
        return 0;
    }
    if ( isActive == 0) {
        printf("Account Inactive\n"); 
    }
    else if (paymentAmount >accountBalance) {
        printf("Insufficient Balance\n");
    }
     else {
         float remaining = (float)(accountBalance - paymentAmount);
         printf("%.2f\n", remaining)
    }
return 0;
}