摘要：
A - 质数筛 题目： Bamboo Pole-vault is a massively popular sport in Xzhiland. And Master Phi-shoe is a very popular coach for his success. He needs some bam 阅读全文
摘要：
题目： A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to launch their project as so 阅读全文
摘要：
题目：http://codeforces.com/problemset/problem/4/B 题解：有d组min max值以及一个sum值，现在要求d个介于min和max之间的数，让其和为sum。此题可以先从sum中减去所有的min，然后对剩下的值进行处理，对其分配时不能超过每一对max-min的 阅读全文
摘要：
题目：http://codeforces.com/problemset/problem/3/A 题解：由题可得，求最短路程，那么国王走斜方向最近，而且只有四种方向，选择了就不能再变化 阅读全文
摘要：
今年是SDUTACM举办的第十一届校赛啦！ 今年校赛的参赛规模也是再创新高！在今天的赛场上与大家同台竞技的，还有50多个来自中小学的小朋友。 十年风雨，我们曾经一起走过。现在让我们脚踏实地，一起奋斗下一个十年！ 现在请你使用'SDUTACM'这一个字符串，打印出只属于今天的的专属图形。 今年是SDU 阅读全文
摘要：
One industrial factory is reforming working plan. The director suggested to set a mythical detail production norm. If at the beginning of the day ther 阅读全文
摘要：
Drazil is playing a math game with Varda. Let's define for positive integer x as a product of factorials of its digits. For example, . First, they cho 阅读全文
摘要：
A telephone number is a sequence of exactly 11 digits, where the first digit is 8. For example, the sequence 80011223388 is a telephone number, but th 阅读全文
摘要：
此次比赛，我很荣幸得此机会跟着学长学姐去打铁。第一次接触这种比赛，确实感到新奇，同时也有不安，因为平时没好好做题，知之甚少，基础确实是超级不稳的。好在学长说让我们开阔一下眼界，尽力就行。比赛做出几个题我就不说了，但是补题的时候真的发现我们真的很菜，简单的题我们竟然可以耗时那么久。。。。。emmm，， 阅读全文
摘要：
You are playing the following game with Joisino. Initially, you have a blank sheet of paper. Joisino announces a number. If that number is written on 阅读全文