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1247 Summer Earnings binary search bitmasks brute force geometry sortings Statement E Codeforces Round 194 (Div. 1) {333} PROGRAMMING Codeforces Round 194 — Editoral 2400
4668 Three Logos bitmasks brute force constructive algorithms geometry implementation math Statement D Codeforces Round 322 (Div. 2) {581} PROGRAMMING Codeforces Round #322 (Div.2) Editorial 1700
1806 Careful Maneuvering bitmasks brute force geometry Statement C Codeforces Round 488 by NEAR (Div. 1) {993} PROGRAMMING Codeforces Round #488 editorial 2100
2041 Count The Rectangles bitmasks brute force data structures geometry sortings Statement E Educational Codeforces Round 68 (Rated for Div. 2) {1194} PROGRAMMING Разбор Educational Codeforces Round 68 2200