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2126 The Child and Binary Tree combinatorics divide and conquer fft number theory Statement E Codeforces Round 250 (Div. 1) {438} PROGRAMMING Tutorial 3100
3516 Thief in a Shop divide and conquer dp fft math Statement E Educational Codeforces Round 9 {632} PROGRAMMING 43493 2500
2422 Binary Table bitmasks brute force divide and conquer dp fft math Statement C CROC 2016 - Final Round [Private, For Onsite Finalists Only] {662} PROGRAMMING Editorial for CROC 2016 Finals and Codeforces Round #347 2800
1022 PolandBall and Many Other Balls combinatorics divide and conquer dp fft math number theory Statement G 8VC Venture Cup 2017 - Elimination Round {755} PROGRAMMING 8VC Venture Cup 2017 — Elimination Round [Editorial] 3100
218 Test Data Generation combinatorics divide and conquer dp fft math number theory Statement F VK Cup 2017 - Round 3 {773} PROGRAMMING VK Cup 2017 Round 3 + Codeforces Round #412 -- Tutorial 3400
242 Days of Floral Colours combinatorics divide and conquer dp fft math Statement E Codeforces Round 431 (Div. 1) {848} PROGRAMMING Codeforces Round #431 Editorial 3400
532 Random Elections bitmasks brute force divide and conquer fft math Statement E Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} PROGRAMMING Codeforces Round #432 editorial 2800
1132 Sum the Fibonacci bitmasks divide and conquer dp fft math Statement G Codecraft-18 and Codeforces Round 458 (Div. 1 + Div. 2, combined) {914} PROGRAMMING Tutorial 2500
1953 Lucky Tickets divide and conquer dp fft Statement G Educational Codeforces Round 57 (Rated for Div. 2) {1096} PROGRAMMING Разбор Educational Codeforces Round 57 2400
472 Product Tuples divide and conquer fft Statement E Bubble Cup 12 - Finals [Online Mirror, unrated, Div. 1] {1218} PROGRAMMING E 2500
594 Xor Spanning Tree divide and conquer fft graphs Statement D Bubble Cup 12 - Finals [Online Mirror, unrated, Div. 1] {1218} PROGRAMMING E 2600
730 Divisor Set divide and conquer fft greedy math number theory Statement G Educational Codeforces Round 76 (Rated for Div. 2) {1257} PROGRAMMING Educational Codeforces Round 76 Editorial 2700
311 Stairs combinatorics divide and conquer fft math Statement I Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2) {1553} PROGRAMMING 5250.0 Harbour.Space Scholarship Contest 2021-2022 (Div. 1 + Div. 2) Editorial
187 Koxia and Bracket divide and conquer fft math Statement G Good Bye 2022: 2023 is NEAR {1770} PROGRAMMING 3250.0 Good Bye 2022 -- Editorial
116 Cyclic Hamming (Easy Version) divide and conquer dp fft math number theory Statement H1 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 4000.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
1431 Blueprint for Seating combinatorics divide and conquer fft math Statement B 2023-2024 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1912} PROGRAMMING Tutorials (PDF) 2000
147 Yet Yet Another Permutation Problem divide and conquer fft math Statement E Codeforces Round 930 (Div. 1) {1936} PROGRAMMING 2500.0 Codeforces Round 930 (Div. 1, Div. 2) Editorial
3340 Maple and Tree Beauty (Hard Version) bitmasks brute force dfs and similar divide and conquer dp fft trees Statement C2 Codeforces Round 1048 (Div. 1) {2138} PROGRAMMING 750.0 Codeforces Round 1048 (Div. 1, Div. 2) Editorial