题意:
给你n个居民的起始位置,各自在长度为l的平台,以同样的速度向左或向右走,当碰见时往相反方向走,问最后掉下去的居民花费的时间以及姓名。
题目:
The Disc, being flat, has no real horizon. Any a…
题意:
给你n个红球和m个蓝色球。然后以相等的概率随机选择了其中两个。选择两个红球的概率是多少?
题目:
Welcome to the CCPC Qinhuangdao Site!
Qinhuangdao is a beautiful coastal city full of charm, integrating historical herit…
题意:
找一个最大的数X,使p%x0且x%q!0,题目保证至少有一个答案满足题意。
题目:
Oleg’s favorite subjects are History and Math, and his favorite branch of mathematics is division.
To improve his division skills, O…