import sys
sys.setrecursionlimit(5*10**5)
input = sys.stdin.readline
from collections import defaultdict, deque, Counter
from heapq import heappop, heappush
from bisect import bisect_left, bisect_right
from math import gcd

n = int(input())
p =[input().rstrip() for i in range(n)]
print(p[0])
for i in range(1, n):
    if p[i] == p[i-1]:
        print('Yes')
    else:
        print('No')