You must be logged in to edit the categories for this problem

815D - Karen and Cards (Codeforces - Codeforces Round #419 (Div. 1)) categories

Category Problems Count
1 data structures 496
2 Binary Search & Ternary Search 352
3 Geometry 254
4 combinatorics 216
5 Codeforces Div. 1, D 209