3832

#1 variant

s = list(map(int, input().split()))
for i in range(1, len(s)):
    if (s[i-1] >= 0 and s[i] >= 0) or (s[i-1] <= 0 and s[i] <= 0):
        print(s[i-1], s[i])
        break

#2 variant

s = list(map(int, input().split()))
ind = 0
for i in range(1, len(s)):
    if ((s[i-1] >= 0 and s[i] >= 0) or (s[i-1] <= 0 and s[i] <= 0)) and (ind == 0):
        print(s[i-1], s[i])
        ind = 1