N = int(input())

k1 = {x:0 for x in ['Red','Orange','Yellow','Green','Cyan','Blue','Violet']}
k2 = {x:0 for x in ['Red','Orange','Yellow','Green','Cyan','Blue','Violet']}

A = list(map(str,input().split()))
B = list(map(str,input().split()))

for a in A:k1[a]+=1
for b in B:k2[b]+=1

for (i1,x1),(i2,x2) in zip(k1.items(),k2.items()):
    if x1!=x2:print(i1)