Category: python
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://www.codeforces.com/problemset/problem/268/C This problem is put at the third problem in the online contests. But it seems too easy for being in that place. The sample …
The problem is from codeforces: http://www.codeforces.com/contest/268/problem/B This is clearly a math counting problem. In easy description, the problem can be described as: how many numbers are there in this pattern, …
This problem is from codeforces: http://www.codeforces.com/problemset/problem/268/A This is a simple math problem. Almost every solution needs to store the colours of home and away. Counting the occurrences that the home colour …
PIBAS is simple, it only has 2 possible operations: string assignment (e.g. A=’abc’) and printing (e.g. ?A). It supports only one function which is similar to the substr in Javascript …