摘要：
链接：http://codeforces.com/problemset/problem/679/A 题目： This is an interactive problem. In the output section below you will see the information about f 阅读全文
摘要：
链接：https://codingcompetitions.withgoogle.com/codejam/round/00000000000516b9/0000000000134c90 题目： Problem After many sleepless nights, you have finally 阅读全文