Submission #2977444

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Source Code Expand

N = int(input())
a,b = (int(i) for i in input().split())
K = int(input())
P = [int(i) for i in input().split()]

been = []
for i in range(K):
    if P[i] not in been:
        been.append(P[i])


if (a in P) or (b in P):
    print("NO")
elif len(been) != K:
    print("NO")
else:
    print("YES")

Submission Info

Judge Result