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Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though i...

Holidays have finished. Thanks to the help of the hacker Leha, Noora managed to enter the university of her dreams which is located in a town Pavlopolis. It's well known that universities provide stud...

There is a robot in a warehouse and n packages he wants to collect. The warehouse can be represented as a coordinate grid. Initially, the robot stays at the point (0,0). The i-th package is at the poi...

Kirill plays a new computer game. He came to the potion store where he can buy any potion. Each potion is characterized by two integers— amount of experience and cost. The efficiency of a potion is t...

B. Gleb And Pizzatime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputGleb ordered pizza home. When the courier delivered the pizza, ...