Please do not look at the code if you are planning to solve any of these problems in the future. Don't deny yourself the learning opportunity that comes with working out the solutions on your own.
This project contains my solutions to some of the Project Euler problems (https://projecteuler.net/about). The relevant code and .txt files containing the necessary data are located in each subfolder numbered according to the problem ID. Each main.cpp file contains the problem description in the beginning of the file as a comment.
Code containes no outside dependency and theoretically could be compiled with any compiler that supports minimum C++17. Tested with gcc on Windows and Linux.