#include <stdio.h>
int main() {
    int payAmt, accBal, isActive;
    if (scanf("%d", &payAmt) != 1) {
        printf("Invalid input\n");
        return 0;
    }
    if (scanf("%d", &accBal) != 1) {
        printf("Invalid input\n");
        return 0;
    }
    if (scanf("%d", &isActive) != 1) {
        printf("Invalid input\n");
        return 0;
    }
    float amt=accBal-payAmt;
    if(isActive == 1) {
        if(accBal >= payAmt) {
            printf("%.2f\n",amt);
        } else{
            printf("Insufficient Balance\n");
        }
    } 
    elseif(isActive==0) {
        printf("Account Inactive\n");
    } 
    else{
        printf("Invalid input\n");
    }
    return 0;
}