http://127.0.0.1:3000/gSchool/ghrsea-toy-problems/ghrsea03?problem=longestPalindrome
http://127.0.0.1:3000/gSchool/toy-problem.longest-palindrome/ghrsea03
https://github.com/gSchool/ghrsea03.toy-problem.longest-palindrome
http://127.0.0.1:3000/gSchool/toy-problem.number-to-english/ghrsea03
https://github.com/gSchool/ghrsea03.toy-problem.number-to-english
http://127.0.0.1:3000/gSchool/toy-problem.sum-array/ghrsea03
https://github.com/gSchool/ghrsea03.toy-problem.sum-array