#include<stdlib.h>
#include<stdio.h>

int main(){
	char *value = getenv("ANIMAL");
	if(value == 0){
		printf("ANIMAL is not set\n");
		return 1;
	}
	if(0 == strcmp(value, "squirrel")){
		printf("You win!\n");
		return 0;
	} else {
		printf("Variable is not set right\n");
		return 2;
	}
}