Review the problem statement from Codeforces (link will open a new tab). When you've matched your problem, go to the solutions.
Get exact match for tags using this format, eg: [u'brute force', 'dp']
Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 334 | Mutation | bitmasks dp math | Statement | C | All-Ukrainian School Olympiad in Informatics {76} | PROGRAMMING | 2700 | ||
| 252 | Bitonix' Patrol | bitmasks brute force combinatorics dfs and similar math | Statement | D | Codeforces Round 134 (Div. 1) {217} | PROGRAMMING | 2800 | ||
| 1490 | Table | bitmasks combinatorics dp math | Statement | B | Codeforces Round 144 (Div. 1) {232} | PROGRAMMING | Editorial for Codeforces Round #144 | 2200 | |
| 483 | Two Sets | bitmasks math | Statement | D | Codeforces Round 153 (Div. 1) {251} | PROGRAMMING | Editorial of Codeforces Round #153 | 2500 | |
| 14217 | Little Girl and Maximum XOR | bitmasks dp greedy implementation math | Statement | D | Codeforces Round 169 (Div. 2) {276} | PROGRAMMING | Codeforces Round #169 — Unofficial Editorial | 1800 | |
| 2495 | Fox and Minimal path | bitmasks constructive algorithms graphs implementation math | Statement | B | Codeforces Round 228 (Div. 1) {388} | PROGRAMMING | Codeforces Round #228 — Editorial | 2000 | |
| 5765 | Fox And Jumping | bitmasks brute force dp math | Statement | D | Codeforces Round 290 (Div. 2) {510} | PROGRAMMING | Codeforces Round #290 Editorial | 2100 | |
| 2823 | Permutations | bitmasks divide and conquer math | Statement | B2 | Rockethon 2015 {513} | PROGRAMMING | 16260 | 1800 | |
| 3911 | 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 | |
| 2078 | 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 | |
| 1325 | Anton and School | bitmasks constructive algorithms implementation math | Statement | F | Codeforces Round 379 (Div. 2) {734} | PROGRAMMING | Tutorial of Codeforces Round #379 (Div. 2) | 2600 | |
| 409 | 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 | 2800 | ||
| 5749 | Square Subsets | bitmasks combinatorics dp math | Statement | C | Codeforces Round 448 (Div. 2) {895} | PROGRAMMING | Codeforces Round #448(Div.2) Editorial | 2000 | |
| 767 | New Year and Entity Enumeration | bitmasks combinatorics dp math | Statement | E | Good Bye 2017 {908} | PROGRAMMING | Good Bye 2017 Editorial | 2400 | |
| 955 | 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 | |
| 1924 | Jamie and Binary Sequence (changed after round) | bitmasks greedy math | Statement | B | Codeforces Round 457 (Div. 2) {916} | PROGRAMMING | 1700 | ||
| 3505 | Mahmoud and Ehab and the xor-MST | bitmasks dp graphs implementation math | Statement | E | Codeforces Round 473 (Div. 2) {959} | PROGRAMMING | Codeforces round #473 editorial | 1900 | |
| 394 | Boolean Computer | bitmasks brute force fft math | Statement | F | Lyft Level 5 Challenge 2018 - Elimination Round {1033} | PROGRAMMING | The Lyft Level 5 Challenge 2018 Elimination Round (Div. 1 + Div. 2) Editorial | 2800 | |
| 656 | Little C Loves 3 III | bitmasks dp math | Statement | E | Codeforces Round 511 (Div. 1) {1034} | PROGRAMMING | Codeforces Round #511 Editorial | 3200 | |
| 2702 | Segment Sum | bitmasks combinatorics dp math | Statement | E | Educational Codeforces Round 53 (Rated for Div. 2) {1073} | PROGRAMMING | 62742 | 2300 | |
| 1546 | Decypher the String | bitmasks chinese remainder theorem constructive algorithms interactive math | Statement | E | Educational Codeforces Round 60 (Rated for Div. 2) {1117} | PROGRAMMING | 65365 | 2200 | |
| 9044 | Neko Performs Cat Furrier Transform | bitmasks constructive algorithms dfs and similar math | Statement | B | Codeforces Round 554 (Div. 2) {1152} | PROGRAMMING | T | 1300 | |
| 707 | Magical Permutation | bitmasks brute force constructive algorithms data structures graphs math | Statement | E | Codeforces Round 558 (Div. 2) {1163} | PROGRAMMING | 66943 | 2800 | |
| 6093 | XOR Guessing | bitmasks interactive math | Statement | E | Educational Codeforces Round 71 (Rated for Div. 2) {1207} | PROGRAMMING | Educational Codeforces Round 71 Editorial | 1800 | |
| 9125 | p-binary | bitmasks brute force math | Statement | C | Technocup 2020 - Elimination Round 2 {1225} | PROGRAMMING | 70898 | 1600 | |
| 401 | Xor-Set | bitmasks divide and conquer math | Statement | F | Codeforces Round 602 (Div. 1, based on Technocup 2020 Elimination Round 3) {1261} | PROGRAMMING | Tutorial | 3100 | |
| 14301 | Make Good | bitmasks constructive algorithms math | Statement | C | Good Bye 2019 {1270} | PROGRAMMING | Разбор Goodbye 2019 | 1500 | |
| 509 | Wise Men (Hard Version) | bitmasks dp math | Statement | F2 | Codeforces Global Round 7 {1326} | PROGRAMMING | 1500.0 | 74961 | 3200 |
| 6749 | Dreamoon Likes Sequences | bitmasks combinatorics dp math | Statement | B | Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov! {1329} | PROGRAMMING | 750.0 | Codeforces Round #631 Editorial | 1900 |
| 8224 | Walk on Matrix | bitmasks constructive algorithms math | Statement | D | Codeforces Round 630 (Div. 2) {1332} | PROGRAMMING | 1250.0 | Codeforces Round #630 Editorial | 1700 |
| 715 | Chiori and Doll Picking (easy version) | bitmasks brute force combinatorics math | Statement | E1 | Codeforces Round 635 (Div. 1) {1336} | PROGRAMMING | 1750.0 | Codeforces Round #635 Editorial | 2600 |
| 359 | Chiori and Doll Picking (hard version) | bitmasks brute force combinatorics math | Statement | E2 | Codeforces Round 635 (Div. 1) {1336} | PROGRAMMING | 1500.0 | Codeforces Round #635 Editorial | 3400 |
| 3263 | Perfect Triples | bitmasks brute force constructive algorithms divide and conquer greedy implementation math | Statement | C | Codeforces Round 633 (Div. 1) {1338} | PROGRAMMING | 1500.0 | Editorial | |
| 19090 | Johnny and Another Rating Drop | bitmasks greedy math | Statement | C | Codeforces Round 647 (Div. 2) - Thanks, Algo Muse! {1362} | PROGRAMMING | 1500.0 | Codeforces Round #647 Editorial | 1400 |
| 1190 | Secure Password | bitmasks combinatorics constructive algorithms interactive math | Statement | G | Codeforces Round 648 (Div. 2) {1365} | PROGRAMMING | 3000.0 | Editorial — Codeforces Round #648 | 2800 |
| 12098 | AND, OR and square sum | bitmasks greedy math | Statement | D | Codeforces Global Round 8 {1368} | PROGRAMMING | 1750.0 | Codeforces Global Round 8: editorial |