Codeforces: https://codeforces.com/profile/joelgun14
AtCoder: https://atcoder.jp/users/joelgun14
TLX: https://tlx.toki.id/profiles/joelgunawan
CodeChef: https://www.codechef.com/users/joelgunawan
C++: g++ (latest version, 12.2.0 as of the 20th of February 2023)