semi-retired, occasionally hops on to learn random ds/algo, not grinding tho

-

-

-

-

friends = [Humanthe2nd, PythonshellDebugwindow, yujhtheyujh, htoshiro, weewoo14, volcano]

orz bruce

Sqrt decomp > segment tree

AtCoder: https://atcoder.jp/users/Ivan_Li (average log function rating graph)

Codeforces: https://codeforces.com/profile/Ivan_Li

Leetcode: Contest Rating: 2020

Some good sqrt decomposition problems:

• https://dmoj.ca/problem/dmopc15c1p6
• https://dmoj.ca/problem/segtree
• https://dmoj.ca/problem/stp3 (tip: use block size 400)
• https://dmoj.ca/problem/tsoc15c2p6 (tip: use block size 600)
• [insert segment tree problems (lazy included)]
• [insert fenwick tree problems]
• [remove persistent segment tree problems]

Personal achievements:

• solving https://dmoj.ca/problem/cco13p3 after 2 month
• using sqrt on seg tree problem (too many to list)
• solving https://dmoj.ca/problem/year2016p8
• creating a contest

Goals:

• solve https://dmoj.ca/problem/ccc19s4 without help