dat = {}


def run(chat1way, accept, chats):
    f = open(chat1way)

    for line in f:
        p = line.split()
        u1 = int(p[0])
        u2 = int(p[1])

        if u1 not in dat:
            dat[u1] = set()

        dat[u1].add(u2)

    f.close()

    print("Number chat1way: {0}".format(len(dat)))
    f = open(accept)

    pairs = set()
    for line in f:
        p = line.split()
        u1 = int(p[0])
        u2 = int(p[1])

        if (u1 in dat and u2 in dat[u1]) or (u2 in dat  and u1 in dat[u2]):
            pairs.add((u1, u2))

    print("Number pairs: {0}".format(len(pairs)))
    # pairs be chat in chat1way , in accept
    for path in chats:
        f = open(path)
        for line in f:
            p = line.split()
            u1 = int(p[0])
            u2 = int(p[1])

            if (u1, u2) in pairs:
                pairs.remove((u1, u2))

            if (u2, u1) in pairs:
                pairs.remove((u2, u1))

    print("after filters: {0}".format(len(pairs)))
    for pair in pairs:
        print("{0} {1}".format(pair[0], pair[1]))


if __name__ == "__main__":
    chat1way = "chat1way/chat_08_12_2017.log"
    accept = "/data/report/friend/accept/08_12_2017.log"
    chats = [
        "chat1way/chat_09_12_2017.log",
        "chat1way/chat_10_12_2017.log",
        "chat1way/chat_11_12_2017.log",
        "chat1way/chat_12_12_2017.log",
        "chat1way/chat_13_12_2017.log",
        "chat1way/chat_14_12_2017.log",

        "chat2way/chat_09_12_2017.log",
        "chat2way/chat_10_12_2017.log",
        "chat2way/chat_11_12_2017.log",
        "chat2way/chat_12_12_2017.log",
        "chat2way/chat_13_12_2017.log",
        "chat2way/chat_14_12_2017.log"
    ]

    run(chat1way, accept, chats)