Helper Links Documentation inzva bundles Competitive Programmer's Handbook cp-algorithms Contest & Problem Solving Sites algoleague leetcode HackerRank codeforces codechef Solved Problems You can visit this link for leetcode questions with editorials prepared by ITU ACM Algorithm Team members. Visualization Tools Graph Visualization VisuAlgo Recommendation for C++ Beginner level C++ introduction video by freeCodeCamp Some tutorials for people new to C++ Input/Output Vector (Dynamic Sized Array) String Some concepts that will help in C++ Stringstream Range Based For Loop Auto Keyword STL Algorithms