You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.

Ex Input:
Person1: Hello . I would like to buy some business cards .
Person2: Excellent . How many would you like ?
Person1: Two thousand would be fine .
Person2: You need to fill out this form , please .
Person1: All I want is the same thing on this card .
Person2: That will be no problem , sir .
Person1: ... Okay , I'm finished . Here's your form and my old card .
Person2: Very good , sir . Your order will be ready in one week .
Person1: Do you think you could finish it in three days ?
Person2: No problem , sir . But it will cost you extra .

Ex Output:
0

Ex Input:
Person1: Great party , isn ' t it ?
Person2: Yeah , really .
Person1: By the way , my name is Liu Wei .
Person2: Hi , I ' m Susan Marshall.You can call me Susan.Nice to meet you .
Person1: What do you do , Susan ?
Person2: Well , I ' m a college student.How about you ?
Person1: I work for the Bank of China , in the International Section .
Person2: I work for the Bank of China , in the International Section .

Ex Output:
1

Ex Input:
Person1: Where is Pamela ?
Person2: Is she coming ?
Person1: She told me she'd be here .
Person2: They are announcing your flight . You'd better board the plane .
Person1: Are you rushing me ?
Person2: I am just reminding you about the time . You don't want to miss the plane , do you ?
Person1: I know what I am doing . Don't worry . Can you do me a favor ?
Person2: Name it and I'll do it for you .
Person1: Take care of Pamela when I am away . She is a nice girl . I don't want her to get hurt or anything .
Person2: I've got it .
Person1: Thank you . Now I see that you are my true friend . Most of my so-called friends left me at the moment my company went bankrupt . You are the only one who has stood by me the whole time .
Person2: I am just doing what I think I should do .
Person1: Thank you for being a friend of mine .
Person2: This isn't like you ... Well , I hope you will have a nice flight and a successful start in business
Person1: Thank you . I have to leave now . If you see Pamela , tell her I'll write to her .

Ex Output:
1