N = int(input())
A = list(map(int,input().split()))
A = sorted(A)
for i in range(N - 1):
    if A[i] == A[i + 1]:
        print('NO')
        exit()
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 A = sorted(A) A sorted(A) sorted A for i in range(N - 1):
    if A[i] == A[i + 1]:
        print('NO')
        exit() i range(N - 1) range N - 1 N 1 if A[i] == A[i + 1]:
        print('NO')
        exit() A[i] == A[i + 1] A[i] A i A[i + 1] A i + 1 i 1 print('NO') print 'NO' exit() exit print('YES') print 'YES' A = list(map(int,input().split())) list(map(int,input().split())) A A = sorted(A) sorted(A) A N = int(input()) int(input()) N
N = int(input())
A = list(map(int,input().split()))
A = sorted(A)
for i in range(N - 1):
    if A[i] == A[i + 1]:
        print('NO')
        exit()
print('YES')