N = int(input())
A = list(map(int, input().split()))
if len(A) > len(set(A)):
  print("NO")
else:
  print("YES") N = int(input()) N int(input()) int input() input A = list(map(int, input().split())) A list(map(int, input().split())) list map(int, input().split()) map int input().split() ().split () input split if len(A) > len(set(A)):
  print("NO")
else:
  print("YES") len(A) > len(set(A)) len(A) len A len(set(A)) len set(A) set A print("NO") print "NO" print("YES") print "YES" A = list(map(int, input().split())) list(map(int, input().split())) A N = int(input()) int(input()) N
N = int(input())
A = list(map(int, input().split()))
if len(A) > len(set(A)):
  print("NO")
else:
  print("YES")