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Type
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5147 GameGame bitmasks constructive algorithms dp games greedy math Statement B Codeforces Round 659 (Div. 1) {1383} PROGRAMMING 1000.0 Codeforces Round #659 Editorial
3591 Omkar and Duck bitmasks constructive algorithms interactive math Statement E Codeforces Global Round 10 {1392} PROGRAMMING 2000.0 Codeforces Global Round 10 — Editorial
4480 Bitwise Queries (Easy Version) bitmasks constructive algorithms interactive math Statement E1 Codeforces Round 685 (Div. 2) {1451} PROGRAMMING 1500.0 Editorial — Codeforces Round #685
3046 Bitwise Queries (Hard Version) bitmasks constructive algorithms interactive math Statement E2 Codeforces Round 685 (Div. 2) {1451} PROGRAMMING 1000.0 Editorial — Codeforces Round #685
7303 Zookeeper and The Infinite Zoo bitmasks constructive algorithms math Statement D Codeforces Global Round 13 {1491} PROGRAMMING 1250.0 Codeforces Global Round 13 Editorial
6201 Genius's Gambit bitmasks constructive algorithms math Statement D Codeforces Round 704 (Div. 2) {1492} PROGRAMMING 2250.0 Codeforces Round #704 Editorial
12156 Baby Ehab Partitions Again bitmasks constructive algorithms dp math Statement C Codeforces Round 717 (Div. 2) {1516} PROGRAMMING 1500.0 Codeforces round #717 editorial
7682 RPD and Rap Sheet (Easy Version) bitmasks constructive algorithms interactive math Statement D1 Codeforces Round 730 (Div. 2) {1543} PROGRAMMING 1000.0 Codeforces Round #730 (Div. 2) Editorial
7197 Take a Guess bitmasks constructive algorithms interactive math Statement D Deltix Round, Summer 2021 (open for everyone, rated, Div. 1 + Div. 2) {1556} PROGRAMMING 1500.0 94384 1800
32930 Mocha and Math bitmasks constructive algorithms math Statement A Codeforces Round 738 (Div. 2) {1559} PROGRAMMING 500.0 Tutorial (en) 900
10420 Divan and bitwise operations bitmasks combinatorics constructive algorithms dp math Statement C Codeforces Round 757 (Div. 2) {1614} PROGRAMMING 1500.0 Tutorial 1500
14751 Factorials and Powers of Two bitmasks brute force constructive algorithms math Statement C Codeforces Round 774 (Div. 2) {1646} PROGRAMMING 1250.0 Codeforces Round #774 (Div. 2) Editorial 1500
864 Anti-Theft Road Planning bitmasks constructive algorithms divide and conquer greedy interactive math Statement F Codeforces Round 785 (Div. 2) {1673} PROGRAMMING 3250.0 Codeforces Round #785 (Div. 2) Editorial
557 Lost Array bitmasks combinatorics constructive algorithms dp math Statement F Codeforces Round 812 (Div. 2) {1713} PROGRAMMING 3000.0 Codeforces Round #812 (Div. 2) Editorial 2900
15556 Mainak and Interesting Sequence bitmasks constructive algorithms math Statement B Codeforces Round 819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022 {1726} PROGRAMMING 1000.0 Codeforces Round #819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022 Editorial
15934 Absolute Maximization bitmasks constructive algorithms greedy math Statement A Codeforces Round 840 (Div. 2) and Enigma 2022 - Cybros LNMIIT {1763} PROGRAMMING 500.0 Codeforces Round #840 (Div. 2) and Enigma 2022 — Cybros LNMIIT Editorial
2412 The Harmonization of XOR bitmasks constructive algorithms greedy math Statement E TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) {1787} PROGRAMMING 2250.0 TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
2473 Candy Party (Hard Version) bitmasks constructive algorithms dp graphs greedy implementation math Statement B2 Codeforces Round 896 (Div. 1) {1868} PROGRAMMING 750.0 Codeforces Round 896 (Div. 1, Div. 2) Editorial
7225 Candy Party (Easy Version) bitmasks constructive algorithms graphs greedy implementation math Statement B1 Codeforces Round 896 (Div. 1) {1868} PROGRAMMING 500.0 Codeforces Round 896 (Div. 1, Div. 2) Editorial
7965 Increasing Subsequences bitmasks constructive algorithms math Statement E Educational Codeforces Round 161 (Rated for Div. 2) {1922} PROGRAMMING Educational Codeforces Round 161 Editorial
7719 Bitwise Operation Wizard bitmasks constructive algorithms greedy interactive math Statement A Codeforces Round 930 (Div. 1) {1936} PROGRAMMING 500.0 Codeforces Round 930 (Div. 1, Div. 2) Editorial
18094 Binary Colouring bitmasks constructive algorithms greedy math Statement B Codeforces Round 948 (Div. 2) {1977} PROGRAMMING 1250.0 129858 1100
5520 Turtle and an Incomplete Sequence bitmasks constructive algorithms greedy implementation math Statement C Codeforces Round 949 (Div. 2) {1981} PROGRAMMING 1500.0 Simplified Chinese Tutorial
17160 Fun Game bitmasks constructive algorithms greedy math Statement B Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2) {1994} PROGRAMMING 1000.0 Video Tutorial
9987 Trip to the Olympiad bitmasks constructive algorithms greedy math Statement C Hello 2025 {2057} PROGRAMMING 1500.0