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687D - Dividing Kingdom II (Codeforces - Codeforces Round #360 (Div. 1)) categories

Category Problems Count
1 brute force 494
2 data structures 489
3 sortings 316
4 Codeforces Div. 1, D 209
5 dsu 116
6 MST,Disjoint sets,SCC 77