Competitive Programming

CodeForces

Introduction

This is just a CodeForces competitive programming directory. Where we're going to code all our things. To avoid problems running in computers we have created a few things. Basically you need to create the .in and .out problems and run:

Ruby

xxxx is your problem code or whatever filename you put to your xxxx.rb, xxxx.in and xxxx.out

make ruby PRG=xxxx

C++

xxxx is your problem code or whatever filename you put to your xxxx.rb, xxxx.in and xxxx.out

make cpp PRG=xxxx

Golang

xxxx is your problem code or whatever filename you put to your xxxx.rb, xxxx.in and xxxx.out

make go PRG=xxxx

After you solved it:

make solve PRG=xxxx

Clean up the mess

make clean PRG=xxxx

Useful things

• The ladder is an organized code forces set of problems increasing in difficulty.

Tips&Tricks

CPP

Debugging snippets:

template<typename T> ostream& operator<<(ostream &os, const vector<T> &v) { os << '{'; string sep; for (const auto &x : v) os << sep << x, sep = ", "; return os << '}'; }
template<typename T, size_t size> ostream& operator<<(ostream &os, const array<T, size> &arr) { os << '{'; string sep; for (const auto &x : arr) os << sep << x, sep = ", "; return os << '}'; }
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }

Ruby