// editor2
#include<stdio.h>
void main()
{
    float pa,ab;
    int ia;
    if(scanf("%f\n",&pa)!=1||
    scanf("%f\n",&ab)!=1||
    scanf("%d\n",&ia)!=1
    {
      printf("Invalid input")  
    }
    
    else if(ia!=1)
    {
        printf("Account Inactive");
    }
    else if(pa>ab)
    {
        printf("Insufficient Balance");
    }
    else
    {
        float remaining=ab-pa;
        printf("%.2f\n",remaining);
    }
}