n, k, x = map(int, input().split())
P = []
for i in range(k):
    if i == x - 1:
        input()
        continue
    a, b = map(int, input().split())
    P.append((a - 1, b - 1))
T = list(map(int, input().split()))
F = list(range(1, n + 1))

for i in range(x - 1):
    a, b = P[i]
    F[a], F[b] = F[b], F[a]
for i in range(k - x):
    a, b = P[k - i - 2]
    T[a], T[b] = T[b], T[a]
ANS = [-1, -1]
for i in range(n):
    if F[i] != T[i]:
        if ANS[0] == -1:
            ANS[0] = i + 1
        else:
            ANS[1] = i + 1
            break
print(*ANS)