题目链接：http://codeforces.com/contest/975/problem/C题目：Ivar the Boneless is a great leader. He is trying to capture Kattegat from Lagertha. The war has begun and wave after wave Ivar's warriors are fal...
题目链接：http://codeforces.com/contest/975/problem/B题目：Mancala is a game famous in the Middle East. It is played on a board that consists of 14 holes.Initially, each hole has $a_i$ stones. When a playe...
题目链接：http://codeforces.com/contest/975/problem/A题目：In Aramic language words can only represent objects.Words in Aramic have special properties:A word is a root if it does not contain the same lette...
题目链接：http://exam.upc.edu.cn/problem.php?id=5252题目：题目描述Given a triangle ABC with incenter (center of its inscribed circle), I, and circumscribed circle O, let M, N and P be the second points of inte...
题目链接：http://exam.upc.edu.cn/problem.php?id=5247题目：题目描述At some point or another, most computer science students have written a standard Sudoku solving program. This is yet another “put numbers in a...