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