摘要：
题目:http://codeforces.com/contest/1207/problem/B B. Square Filling time limit per test 1 second memory limit per test 256 megabytes input standard inpu 阅读全文
摘要：
题目:http://codeforces.com/contest/1207/problem/C C. Gas Pipeline time limit per test 2 seconds memory limit per test 256 megabytes input standard input 阅读全文