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