ICPC baylor : https://icpc.baylor.edu/ICPCID/SO9X55OWARRG
SPOJ : http://www.spoj.com/users/jahid_ictian/
Vjudge : https://vjudge.net/user/Md_Jahid_Hasan
Codeforces : http://codeforces.com/profile/jahid-hasan
Hackerrank : https://www.hackerrank.com/m_jahid