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