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Description A number of students are members of a club that travels annually to exotic locations. Their destinations in the past have included Indiana 阅读全文
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Problem Description N个气球排成一排，从左到右依次编号为1,2,3....N.每次给定2个整数a b(a <= b),lele便为骑上他的“小飞鸽"牌电动车从气球a开始到气球b依次给每个气球涂一次颜色。但是N次以后lele已经忘记了第I个气球已经涂过几次颜色了，你能帮他算出每个气 阅读全文
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Description The little cat is so famous, that many couples tramp over hill and dale to Byteland, and asked the little cat to give names to their newly 阅读全文
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详细点击一下链接（背包九讲） http://love-oriented.com/pack/Index.html#sec1 以下内容，有些自己想法，有些摘录 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 阅读全文