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'.

Example Input: Person1: Mr.Ben , What do you think of the book ?
Person2: It's an excellent one . I like it very much .
Person1: Why ?
Person2: It includes a lot of useful words and phrases .
Person1: I agree with you .
Example Output: 1

Example Input: Person1: What dances do you like ?
Person2: I love to dance the fast music .
Person1: Then you must be interested in disco .
Person2: Yes , it's my favorite .
Person1: Oh , it's a disco . Let's dance .
Person2: You're a good dancer .
Person1: Thank you . Now they are playing a rumba . Would you have a try ?
Person2: Sorry . I feel like sitting out the next dance .
Person1: OK . Let's get something to drink .
Person2: Good idea .
Example Output: 1

Example Input: Person1: What ? How could you forget to reserve the concert tickets ?
Person2: I'm sorry . I forget all about it .
Person1: How could you ? I reminded you just this morning .
Person2: It's leap my mind . I really feel terrible about it .
Person1: I have been looking forward to this performance all month .
Person2: I'm really sorry I let you down . I'll make it up to you somehow .
Example Output:
1