#include<stdio.h>
int main(){
    int paymentAmount,accountBalance,isActive;
    float a;
    scanf("%d",&paymentAmount);
    scanf("%d",&accountBalance);
    scanf("%d",&isActive);
    
    if(paymentAmount<=1||paymentAmount>1000000||accountBalance<=1||accountBalance>10000)
    {
        printf("Invalid input");
    }
    else if(accountBalence<paymentAmount){
        printf("Insufficient Balence");
        
    }
    else if(isActive==0)
    {
        printf("Account Inactive");
        
    }
    else{
        a=accountBalence-paymentAmount;
        printf("%.2f",a);
    }