n=int(input())
A=list(map(str,input().split()))
B=list(map(str,input().split()))
l1=[]
l2=[]
l=["Red","Orange","Yellow","Green","Cyan","Violet"]
for x in l:
    l1.append(A.count(x))
    l2.append(B.count(x))

for i in range(6):
    if l1[i]!=l2[i]:
        print(l[i])