Link hạng mục thuật toán : ~\href{https://cp-algorithms.com/}{Emaxx}~

Link proposal: ~\href{http://lqdoj.edu.vn/problem/proposal}{Đây}~

Link template: ~\href{http://lqdoj.edu.vn/problem/editorial#comment-707}{Đây}~

Link ra đề: ~\href{http://lqdoj.edu.vn/post/14-propose-contest?fbclid=IwAR2JAp0j-yyq8qiv2r2qQipYMj8Br8HwxJLRvKuv9_dfZ3-MFxityZ6wIFw}{Đây}~

Bài viết mà mình tâm đắc: ~\href{https://www.facebook.com/groups/from.vnoi.with.love/permalink/1883958075058139/}{Link}~

Link youtube: ~\href{https://www.youtube.com/watch?v=gPvyDmnYKfE&fbclid=IwAR0MBcNrYjudtyYca0hfn648Fx3wod1uUCWBK-nwqx15rALfSjqbfKd_f4U}{Link}~

Blog yêu thích: ~\href{https://codeforces.com/blog/entry/54064?fbclid=IwAR0EuAU948p71HCTfc5ul62JSxMnR_7BT7t3RZoT_T8wNNew1li1jo_nCWU}{Link}~

Quy hoạch động: ~\href{http://vnoi.info/wiki/algo/dp/basic-problems#x%C3%A2u-con-chung-d%C3%A0i-nh%E1%BA%A5t}{VNOI}~

2020'IOI teams: ~\href{https://codeforces.com/blog/entry/81685?#comment-683666}{CF}~

Rời rạc hóa và ứng dụng: ~\href{https://vnoi.info/wiki/algo/trick/Roi-rac-hoa-va-ung-dung}{VNOI}~

Xử lý xâu: ~\href{http://vnoi.info/wiki/algo/string/basic}{VNOI}~

Trie: ~\href{http://vnoi.info/wiki/algo/data-structures/trie}{VNOI}~

CTF: ~\href{https://inseclab.uit.edu.vn/nhung-dieu-can-biet-ve-ctf-truoc-khi-bat-dau-cuoc-choi/}{CTF}~

Nhạc hay nghe: ~\href{https://www.youtube.com/watch?v=mxYUaAoNd54}{MUS}~

Plotting Contest: ~\href{https://www.scipy2020.scipy.org/plotting-contest}{Scipy}~

Quote hay: ~\href{https://www.quora.com/profile/Thanh-Trung-Nguyen}{QUOTE}~

Kĩ thuật vi phân : ~\href{https://codeforces.com/blog/entry/76447}{DIFF}~

Manager's Algorithm: ~\href{https://codeforces.com/blog/entry/12143}{MANAGER}~