#include <stdio.h>

int main()
{
	char str1[256], str2[256];
	scanf("%s", &str1);
	scanf("%s", &str2);

	if(str1 == "watermelon" || str2 == "watermelon"){
		if(str1 == "shrinebell" || str2 == "shrinebell"){
            printf("beachball");
		}else{
			printf("shrinebell");
		}
	}else{
		printf("watermelon");
	}
	return 0;
}