#include<stdio.h>
int main ()
{
    int pay,bal,active;
   scanf("%d %d %d", &pay, &bal, &active)!=1{
   printf("Invalid input");
   return 0;
   }
    if(pay < 0 || pay > 100000 || bal < 0 || bal > 100000 || (active != 0 && active != 1)){
    printf("Invalid input");
    } else if (active == 0) {
        printf("Account Inactive");
    } else if (pay > bal) {
        printf("Insufficient Balance");
    } else {
        printf("%.2f", (float)(bal - pay));
    }    
    return 0;
}