# -*- coding: utf-8 -*-

N,K,X = map(int, input().split())
A = []
B = []
for i in range(K):
    a,b = input().split()
    if a=='?':
        A.append(a)
        B.append(b)
    else:
        A.append(int(a))
        B.append(int(b))
C = list(map(int, input().split()))

first = list(range(N+1))
latter = [0]
for c in C:
    latter.append(c)

for i in range(K):
    if A[i] == '?':
        break
    temp = first[A[i]]
    first[A[i]] = first[B[i]]
    first[B[i]] = temp

for i in range(K-1, -1, -1):
    if A[i] == '?':
        break
    temp = latter[A[i]]
    latter[A[i]] = latter[B[i]]
    latter[B[i]] = temp

x1 = x2 = 0
for i in range(1, N+1):
    if first[i] != latter[i]:
        if x1 == 0:
            x1 = i
        else:
            x2 = i
            break

print(x1, x2)