#include<stdio.h>
char s[102], t[102];
int main()
{
	scanf("%s%s", s, t);
	if (s[0] != 'w' && t[0] != 'w')
		printf("watermelon\n");
	else if (s[0] != 'b' && t[0] != 'b')
		printf("beachball\n");
	else
		printf("shrinebell\n");
	return 0;
}