A = list(map(int, input().split()))

ans = 'Yes' if (len(A) - 1) == len(set(A)) else 'No'

print(ans) A = list(map(int, input().split())) A list(map(int, input().split())) list map(int, input().split()) map int input().split() ().split () input split ans = 'Yes' if (len(A) - 1) == len(set(A)) else 'No' ans 'Yes' if (len(A) - 1) == len(set(A)) else 'No' (len(A) - 1) == len(set(A)) len(A) - 1 len(A) len A 1 len(set(A)) len set(A) set A 'Yes' 'No' print(ans) print ans A = list(map(int, input().split())) list(map(int, input().split())) A ans = 'Yes' if (len(A) - 1) == len(set(A)) else 'No' 'Yes' if (len(A) - 1) == len(set(A)) else 'No' ans
A = list(map(int, input().split()))

ans = 'Yes' if (len(A) - 1) == len(set(A)) else 'No'

print(ans)