摘要：
链接： https://codeforces.com/contest/1282/problem/C 题意： Petya has come to the math exam and wants to solve as many problems as possible. He prepared and 阅读全文
摘要：
链接： https://codeforces.com/contest/1282/problem/B2 题意： This is the hard version of this problem. The only difference is the constraint on k — the numb 阅读全文
摘要：
链接： https://codeforces.com/contest/1282/problem/A 题意： Polycarp lives on the coordinate axis Ox and travels from the point x=a to x=b. It moves uniform 阅读全文