import sys
sys.setrecursionlimit(10**7)
from functools import lru_cache
@lru_cache(maxsize=None)
def calc(i,x):
    #print(i,x)
    if i==0:
        return S[x]
    elif i==1:
        return x

    else:
        if S[i-2]==x:
            return calc(i-1,"Yes")
        else:
            return calc(i-1,"No")


N=int(input())
S=[input().strip() for i in range(N)]

print(S[0])
for i in range(1,N):
    if S[i]==S[i-1]:
        print(calc(i,"Yes"))
    else:
        print(calc(i,"No"))