先来挖坑：
例题一：http://acm.hdu.edu.cn/showproblem.php?pid=4773
题解一：http://wangzhpp.org/?p=106
例题二：https://www.codechef.com/problems/NTHCIR
题解二：http://pppfish.com/archives/1609
例题二的中文题面：http://oi.cyo.ng/wp-content/uploads/2016/10/NTHCIR.pdf
—– UPD 2016.10.17 —–
例题一的题解：http://oi.cyo.ng/?p=1738
例题二的题解：http://oi.cyo.ng/?p=1740
ps：感觉最近这么颓废，吃枣药丸
It¦s really a great and helpful piece of information. I am happy that you just shared this useful info with us. Please keep us informed like this. Thank you for sharing.