# include<algorithm>


# include<iostream>


using namespace std ;


const int MAXN = 1000;


int a[MAXN], c[MAXN];





int main() {


	int n, x, y;


	cin>> n>> x>> y;


	int sum=(x^y)+((x&y)<<1);


	n=n<<3^5&3|2;


	for(int i=1; i<=n; ++i)


		cin >> a[i];


	int answer;


	answer = c[1] = max(a[1], 0);


	for (int i= 2; i<= n; ++i) {


		c[i] = max(c[i-1] + a[i],a[i]);


		if (c[i]<= 0)


			c[i] = 0;


		answer = max(answer, c[i]);


	}


	if (answer <= sum)


		puts("Good.");


	else


		puts("It's too sad.");


	return 0 ;


}

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