N = int(input())

used = [0 for _ in range(N + 2)]
used[0] = 1
used[N + 1] = 1

while True:
    cnt = 0
    for i in range(0, N + 1):
        if used[i] and not used[i + 1]:
            cnt += 1
    if cnt % 2 == 1:
        for i in range(0, N):
            if used[i] and not used[i + 1] and used[i + 2]:
                used[i + 1] = 1
                print(1, i + 1)
                break
        else:
            for i in range(0, N - 1):
                if used[i] and not used[i + 1] and not used[i + 2] and used[i + 3]:
                    used[i + 1] = 1
                    used[i + 2] = 1
                    print(2, i + 1)
                    break
            else:
                for i in range(0, N):
                    if not used[i + 1]:
                        used[i + 2] = 1
                        print(1, i + 2)
                        break
    t = int(input())
    if t == 0:
        break
    elif t == 1:
        raise Exception
    elif t == 2:
        raise Exception
    else:
        k, x = map(int, input().split())
        if k == 1:
            used[x] = 1
        else:
            used[x] = 1
            used[x + 1] = 1