Babu bhai buys apartment

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Problem Description : .....Shooting of Hera Pheri-3 has just begun..... Babu Bhai wants to buy an apartment in a new house at Line Avenue of Metropolis. The house has n apartments that are numbered from 1 to n and are arranged in a row. Two apartments are adjacent if their indices differ by 1. Some of the apartments can already be inhabited, others are available for sale. Babu Bhai often visits

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