Codeforces Solutions in C++20

An ongoing quest to solve all Codeforces problems ordered by popularity and learn some modern C++ in the process.

All solutions are original and released into the Public Domain. Please see LICENSE for details.

Some caveats.

• The C++ version might be upgraded in the future following adoption by Codeforces.
• Some problems might be solved out of order as I (try to) compete in ongoing contests.
• Some problems are not actually solved: they do not pass all Codeforces tests. Such problems can be identified by a file named .unsolved in the problem directory.

Author's Codeforces profile: Ashpool

Statistics

• Total problems in Codeforces problem set: 9678
  • Problems started: 139
    • Problems solved: 138
    • Problems not solved: 1

Percentage of solved problems: 1.4259%

Thanks

• Mike Mirzayanov for Codeforces.
• cppreference.com for the always-up-to-date C++ reference.