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