first commit
Hello world in python
a second python file
Delete helloworld.py
Delete hello.py
Ballot problem
Ballot problem
Merge branch 'master' of github.com:shenzhu/Programming-Contest-Exercises
Initial commit
A simple recommender system based on similarities of users in python
Merge branch 'master' of github.com:shenzhu/Recommender-System
Delete Ballot.cpp
A recommender system based on similarites of user in python
Test
Merge branch 'master' of github.com:shenzhu/Recommender-System
Third version of Ballot, binary search the sum of k3 and k4, O(n2logn)