#include<stdio.h>
int main()
{
    int a,b,c;
    if(scanf("%d %d %d",&a,&b,&c)!=3)
    {
        printf("invalid input");
        return 0;
    }
    if(a<=0 || a>=1000000 || b>=1000000 ||(c !=0&& c!=1))
{
    printf("Account Inactive\n");
    return 0;
    }
    if(c==0)
    {
        printf("Account Inactive\n");
        return 0;
    }
    if(a>b)
    { 
        printf("Issufficient Balance");
        return 0;
    }
    float  remainigBalance = b-a;
    printf("%.2f\n" , remainingBalance);