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Masha has recently bought a cleaner robot, it can clean a floor without anybody's assistance. Schematically Masha's room is a rectangle, consisting of 阅读全文
posted @ 2018-08-03 11:02
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A gourmet came into the banquet hall, where the cooks suggested n dishes for guests. The gourmet knows the schedule: when each of the dishes will be s 阅读全文
posted @ 2018-08-03 10:29
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Welcoming autumn evening is the best for walking along the boulevard and npeople decided to do so. The boulevard can be represented as the axis Ox. Fo 阅读全文
posted @ 2018-08-03 09:59
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