Read the following information carefully and answer question given below :
In an engineering college, four students Diksha, Shreya, Tanvi and Akriti exhibit a very strange mix of hobbies and subject interests. One of them studies Computer Science and plays Golf and Lawn Tennis. Diksha and Shreya study Mechanical engineering. Diksha plays Billiards. Both the Mechanical Engineering students play chess. Tanvi is a student of Physics. The physics student play Chess and Badminton. All the friends play two games each and study one subject each. One of the students also does weight training.
How many games are played and subjects studied by all the four students?