N,K,X = map(int, input().split())
A = [list(input().split()) for _ in range(K)]
C2 = [0]+list(input().split())
C1 = [0]+list(range(1,N+1))
C1 = [str(C1[i]) for i in range(N+1)]
for i in range(K):
    if A[i][0] == "?":break
    a,b = int(A[i][0]),int(A[i][1])
    C1[a],C1[b] = C1[b],C1[a]
for i in range(K-1,-1,-1):
    if A[i][0] == "?":break
    a,b = int(A[i][0]),int(A[i][1])
    C2[a],C2[b] = C2[b],C2[a]
ind = 0
ans = [0,0]
for i in range(1,N+1):
    if C1[i]!=C2[i]:
        ans[ind] = i
        ind += 1
print(*ans)