N, K, X = map(int, input().split())
A = [0] * K
B = [0] * K
mae = [i + 1 for i in range(N)]
result1 = 0
result2 = 0
for i in range(K):
    if i != X-1:
        A[i], B[i] = map(int, input().split())
    else:
        gomi = input()

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

for i in range(X - 1):
    mae[A[i]-1], mae[B[i]-1] = mae[B[i]-1], mae[A[i]-1]

for i in range(K - X):
    ushiro[A[K-i-1]-1], ushiro[B[K-i-1]-1] = ushiro[B[K-i-1]-1], ushiro[A[K-i-1]-1]

for i in range(K):
    if mae[i] != ushiro[i]:
        result1 = i + 1
        result2 = mae.index(ushiro[i]) + 1
        break

print(result1, result2)