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18917 Composite Coloring brute force constructive algorithms greedy math number theory Statement B Codeforces Round 630 (Div. 2) {1332} PROGRAMMING 1000.0 Codeforces Round #630 Editorial 1500
2946 Sum of Digits brute force constructive algorithms dp greedy math number theory Statement E Educational Codeforces Round 90 (Rated for Div. 2) {1373} PROGRAMMING Educational Codeforces Round 90 Editorial
7706 Chopping Carrots (Easy Version) binary search brute force constructive algorithms dp greedy number theory Statement D1 Codeforces Round 809 (Div. 2) {1706} PROGRAMMING 1000.0 Codeforces Round #809 Editorial
1209 Two Permutations (Easy Version) brute force constructive algorithms greedy number theory Statement E1 Codeforces Round 899 (Div. 2) {1882} PROGRAMMING 2000.0 Codeforces Round 899 (Div. 2) Editorial
16915 Insert and Equalize brute force constructive algorithms greedy math number theory Statement C Educational Codeforces Round 159 (Rated for Div. 2) {1902} PROGRAMMING Educational Codeforces Round 159 Editorial
10254 Squaring brute force constructive algorithms data structures greedy implementation math number theory Statement C Codeforces Round 961 (Div. 2) {1995} PROGRAMMING 1750.0 Video Tutorial
3520 Common Generator brute force constructive algorithms greedy math number theory Statement E Refact.ai Match 1 (Codeforces Round 985) {2029} PROGRAMMING 2500.0 Refact.ai Match 1 (Codeforces Round 985) Editorial
5833 Non Prime Tree brute force constructive algorithms dfs and similar greedy number theory trees two pointers Statement D Codeforces Round 992 (Div. 2) {2040} PROGRAMMING 2000.0 Codeforces Round #992 (Div.2) Editorial
428 Andryusha and CCB brute force constructive algorithms greedy math number theory strings Statement F Codeforces Round 1014 (Div. 2) {2092} PROGRAMMING 3000.0 Codeforces Round #1014 (Div. 2) Editorial
14807 Gellyfish and Flaming Peony brute force constructive algorithms dp greedy math number theory shortest paths Statement A Codeforces Round 1028 (Div. 1) {2115} PROGRAMMING 500.0 Codeforces Round 1028 (Div.1, Div.2) Editorial
877 Sea, You & copriMe brute force combinatorics constructive algorithms graphs greedy math number theory Statement H Codeforces Round 1042 (Div. 3) {2131} PROGRAMMING Codeforces Round 1042 (Div. 3) Editorial