#include <stdio.h>

int main(void)
{
    int r = 0,l = 0;
    char a[5],b[5],c[5];
    scanf("%s%s%s",a,b,c);
    if (a[0] == 'R') {
        r++;
    }else{
        l++;
    }
    if (b[0] == 'R') {
        r++;
    }else{
        l++;
    }
    if (c[0] == 'R') {
        r++;
    }else{
        l++;
    }
    if (r > l) {
        printf("RED\n");
    }else{
        printf("BLUE\n");
    }
    return 0;
}