#include<stdio.h>
int main(){
    int paymentAmound;
   int accountBalance;
   int isActive;
    if(scanf("%d",&paymentAmound)!=1||
    scanf("%d",&accountBalance)!=1||
    scanf("%d",&isActive) !=1){
        printf("Invalid input\n");
        return 0;
    }
    if(isActive==0){
        printf("Account Inactive\n");
    }
    else if(paymentAmound> accountBalance){
        printf("Insufficiant Balance\n");
    }else{
        float remainingBalance=(float)accountBalance-(float)paymentAmound;
       if(remainingBalance==(int)remainigBalance)
      printf("%d\n",(int)remainingBalance);
      else
       printf("%.2f\n",remainingBalance);
    }
    return 0;
}