摘要:
The football season has just ended in Berland. According to the rules of Berland football, each match is played between two teams. The result of each 阅读全文
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Friends are going to play console. They have two joysticks and only one charger for them. Initially first joystick is charged at a1 percent and second 阅读全文
摘要:
You are given two integers xx and yy (it is guaranteed that x>yx>y). You may choose any prime integer pp and subtract it any number of times from xx. 阅读全文
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You have two integers ll and rr. Find an integer xx which satisfies the conditions below: l≤x≤rl≤x≤r. All digits of xx are different. If there are mul 阅读全文