N = int(input())
if N % 2 == 0:
    print(2, N // 2)
else:
    print(1, N // 2 + 1)

while 1:
    t = int(input())
    if t <= 1:
        break
    k, x = map(int, input().split())
    print(k, N + 2 - x - k)