Tag: problem description

The problem is from codeforces: http://www.codeforces.com/problemset/problem/278/A The problem can be simplified as the following: in a double-direction link, given two nodes, compute the shortest distance between them. There are only …

The problem is from codeforces: http://codeforces.com/problemset/problem/245/A A really simple math problem, can be solved within a few lines of Python code: #!/usr/bin/env python ax = asum = 0 bx = …

The problem is from codeforces: http://www.codeforces.com/problemset/problem/245/B It is an easy string-matching related problem. You can have many ways to solve this. Because of the limitation, i.e. the first letter must …