Competitive programming Dojo

Valuable tools

Useful code template and libraries to solve problems


Code Forces Problems & Solutions

CodeForces(https://codeforces.com/)


Atcoder Problems & Solutions

Atcoder(https://atcoder.jp/)


Aizu Online Judge Problems & Solutions

Aizu Online Judge(http://judge.u-aizu.ac.jp/onlinejudge/index.jsp)