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:     How nice these sunglasses are ! 
 Person2:  Yes , they are the latest designs . Would you like to try them on ? 
 Person1:      I want to try on this pair . 
 Person2:  The round shape pair ? 
 Person1:      That's right . 
 Person2:  I think it suits you well . 
 Person1:      I agree , how much ? 
 Person2:  120 yuan . 
 Person1:      It's not expensive . OK . I'll take them . 

Ex Output:
0


Ex Input:
 Person1:     There are so many environment problems in the world today . Do you think we can really solve them all or will destroy the world ? 
 Person2:  I hope that world leaders can get together and agree on a plan of action , but I doubt it ’ ll happen before it ’ s too late . 
 Person1:      We need to solve the problem of air pollution before we destroy the atmosphere . There ’ s lots of clean , modern technology , but companies in developed countries say it ’ s expensive . Developing countries 
 Person2:  Everyone is looking at the issue in the short term , rather than the long term . It ’ s the same with the destruction of the rainforests . Countries and companies just want the wood . They ’ re not thinking a 
 Person1:      In other parts of the world , especially in Africa , there is a problem with desertification . Climate change and over-farming are causing farmland to turn into desert . In means that people cannot grow e 
 Person2:  It also means that people sometimes fight over the farmland that remains . Damaging the environment actually leads to conflict between people . 
 Person1:      Have you ever thought about joining an organization committed to protecting the environment ? You could get involved with projects to improve the environment . 
 Person2:  I think I ’ d like to do that . I could take the things I learn here back to my country when I have finished my studies . 

Ex Output:
1


Ex Input:
 Person1:     I just got a letter from an old high school buddy .  
 Person2:  Really ? That's nice .  
 Person1:      He usually keeps me posted .  
 Person2:  I've been completely out of touch with my old friends .  
 Person1:      It's hard to keep up contact when people move around so much .  
 Person2:  Yes , people just seem to drift apart . 

Ex Output:

0


