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Calabash is the servant of a landlord. The landlord owns a piece of land, which can be regarded as an infinite 2D plane. One day the landlord set up two orthogonal rectangular-shaped fences on his lan...

In this problem you are to calculate the sum of all integers from1ton, but you should take all powers of two with minus in the sum.For example, forn = 4the sum is equal to - 1 - 2 + 3 - 4 =  - 4...