题目链接http://codeforces.com/contest/1008/problem/B题目There are $n$ rectangles in a row. You can either turn each rectangle by $90$ degrees or leave it as it is. If you turn a rectangle, its width will...
题目链接http://codeforces.com/contest/1008/problem/A题目Vitya has just started learning Berlanese language. It is known that Berlanese uses the Latin alphabet. Vowel letters are "a", "o", "u", "i", and "...