#include <stdio.h>

int main(void)
{
	char s[3][5];
	int r = 0, b = 0;
	int i;

	for (i = 0; i < 3; i++) {
		scanf("%s", &s[i]);
		if (s[i][0] == 'R')
			r++;
		else
			b++;
	}

	printf("%s\n", (r > b) ? "RED" : "BLUE");

	return 0;
}