n = int(input())
l = []
for _ in range(n):
    a,b = map(int,input().split())
    l.append((a,b))
for _ in range(n):
    for i in range(n-1):
        a,b = l[i]
        c,d = l[i + 1]
        if d * a < b * c:
            l[i] = (c,d)
            l[i + 1] = (a,b)
for i in range(n):
    print(*l[i])