Categories CP 7 categories , 37 posts Atcoder 3 posts BOJ 4 posts Codeforces 23 posts ICPC 1 post OMC 2 posts Olympiad 3 posts others 3 posts GSHS 4 categories , 16 posts ComProg 1 post InfoII 3 posts LinAlgebra 1 post MMSS 9 posts Other 2 categories , 4 posts Music 3 posts meta 2 posts PS 2 categories , 6 posts NSP 4 posts others 3 posts other 3 categories , 4 posts math/cs 1 post meta 2 posts music 2 posts