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']
1 2 >Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 121 | Path Canonization | *special | Statement | G | Unknown Language Round 1 {64} | PROGRAMMING | 2300 | ||
| 502 | Decimal sum | *special | Statement | C | Unknown Language Round 4 {130} | PROGRAMMING | Unknown Language Round #4: editorial | 1500 | |
| 394 | Exponentiation | *special | Statement | D | Unknown Language Round 4 {130} | PROGRAMMING | Unknown Language Round #4: editorial | 1700 | |
| 296 | Tribonacci numbers | *special | Statement | E | Unknown Language Round 4 {130} | PROGRAMMING | Unknown Language Round #4: editorial | 1800 | |
| 284 | CAPS LOCK ON | *special | Statement | G | Unknown Language Round 4 {130} | PROGRAMMING | Unknown Language Round #4: editorial | 1800 | |
| 278 | Prime factorization | *special | Statement | F | Unknown Language Round 4 {130} | PROGRAMMING | Unknown Language Round #4: editorial | 1900 | |
| 605 | Balanced brackets | *special | Statement | H | Unknown Language Round 4 {130} | PROGRAMMING | Unknown Language Round #4: editorial | 1900 | |
| 341 | Date calculation | *special | Statement | J | Unknown Language Round 4 {130} | PROGRAMMING | Unknown Language Round #4: editorial | 2300 | |
| 822 | A + B | *special | Statement | A | Surprise Language Round 5 {153} | PROGRAMMING | Surprise Language Round #5: разбор задач | 1600 | |
| 157 | Binary notation | *special | Statement | B | Surprise Language Round 5 {153} | PROGRAMMING | Surprise Language Round #5: разбор задач | 1800 | |
| 391 | Caesar Cipher | *special | Statement | C | Surprise Language Round 5 {153} | PROGRAMMING | Surprise Language Round #5: разбор задач | 2200 | |
| 80 | Euclidean Distance | *special | Statement | E | Surprise Language Round 5 {153} | PROGRAMMING | Surprise Language Round #5: разбор задач | 2200 | |
| 83 | Date Change | *special | Statement | D | Surprise Language Round 5 {153} | PROGRAMMING | Surprise Language Round #5: разбор задач | 2300 | |
| 313 | Binary notation | *special | Statement | B | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 1800 | |
| 228 | Remove digits | *special | Statement | D | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 1900 | |
| 178 | HQ9+ | *special | Statement | E | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 2000 | |
| 202 | Factorial zeros | *special | Statement | F | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 2100 | |
| 809 | Prime factorization | *special | Statement | C | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 2200 | |
| 220 | Alternating case | *special | Statement | H | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 2300 | |
| 96 | Brackets | *special | Statement | J | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 2400 | |
| 65 | Non-decimal sum | *special | Statement | G | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 2500 | |
| 77 | Truncatable primes | *special | Statement | I | VK Cup 2012 Wild-card Round 1 {162} | PROGRAMMING | VK Cup 2012 Wild-card Round 1: editorial | 2500 | |
| 1466 | MYSTERIOUS LANGUAGE | *special | Statement | E | April Fools Day Contest {171} | PROGRAMMING | April Fools Day Contest: editorial | 2000 | |
| 932 | Mysterious numbers - 2 | *special | Statement | G | April Fools Day Contest {171} | PROGRAMMING | April Fools Day Contest: editorial | 2000 | |
| 778 | Hexagonal Numbers | *special | Statement | A | Surprise Language Round 6 {188} | PROGRAMMING | Surprise Language Round #6: editorial | 1200 | |
| 125 | Triskaidekaphobia | *special | Statement | B | Friday the 13th, Programmers Day {345} | PROGRAMMING | 2000 | ||
| 126 | Counting Fridays | *special | Statement | C | Friday the 13th, Programmers Day {345} | PROGRAMMING | 2000 | ||
| 50 | Black Cat Rush | *special | Statement | E | Friday the 13th, Programmers Day {345} | PROGRAMMING | 2800 | ||
| 47 | Superstitions Inspection | *special | Statement | F | Friday the 13th, Programmers Day {345} | PROGRAMMING | 2800 | ||
| 2468 | The Great Game | *special | Statement | A | April Fools Day Contest 2014 {409} | PROGRAMMING | April Fools Day Contest 2014: editorial | 1700 | |
| 1981 | Magnum Opus | *special | Statement | C | April Fools Day Contest 2014 {409} | PROGRAMMING | April Fools Day Contest 2014: editorial | 1700 | |
| 1358 | Mysterious Language | *special | Statement | B | April Fools Day Contest 2014 {409} | PROGRAMMING | April Fools Day Contest 2014: editorial | 1800 | |
| 1715 | Big Data | *special | Statement | D | April Fools Day Contest 2014 {409} | PROGRAMMING | April Fools Day Contest 2014: editorial | 2000 | |
| 578 | Dome | *special | Statement | E | April Fools Day Contest 2014 {409} | PROGRAMMING | April Fools Day Contest 2014: editorial | 2100 | |
| 2092 | 000001 | *special | Statement | F | April Fools Day Contest 2014 {409} | PROGRAMMING | April Fools Day Contest 2014: editorial | 2300 | |
| 521 | On a plane | *special | Statement | G | April Fools Day Contest 2014 {409} | PROGRAMMING | April Fools Day Contest 2014: editorial | 2600 | |
| 127 | Feed the Golorp | *special | Statement | I | April Fools Day Contest 2014 {409} | PROGRAMMING | April Fools Day Contest 2014: editorial | 2900 | |
| 260 | Hexakosioihexekontahexaphobia | *special | Statement | B | Surprise Language Round 7 {470} | PROGRAMMING | Surprise Language Round #7: editorial | 1800 | |
| 198 | Chessboard | *special | Statement | E | Surprise Language Round 7 {470} | PROGRAMMING | Surprise Language Round #7: editorial | 1900 | |
| 255 | Eval | *special | Statement | C | Surprise Language Round 7 {470} | PROGRAMMING | Surprise Language Round #7: editorial | 2100 | |
| 153 | Caesar Cipher | *special | Statement | D | Surprise Language Round 7 {470} | PROGRAMMING | Surprise Language Round #7: editorial | 2200 | |
| 106 | Pairwise Sums | *special | Statement | F | Surprise Language Round 7 {470} | PROGRAMMING | Surprise Language Round #7: editorial | 2300 | |
| 95 | Hamming Distance | *special | Statement | G | Surprise Language Round 7 {470} | PROGRAMMING | Surprise Language Round #7: editorial | 2500 | |
| 189 | Array Sorting | *special | Statement | H | Surprise Language Round 7 {470} | PROGRAMMING | Surprise Language Round #7: editorial | 2600 | |
| 675 | Quadratic equation | *special | Statement | A | VK Cup 2015 - Wild Card Round 1 {530} | PROGRAMMING | VK Cup 2015 Wild Card Round 1: editorial | 1500 | |
| 542 | String inside out | *special | Statement | B | VK Cup 2015 - Wild Card Round 1 {530} | PROGRAMMING | VK Cup 2015 Wild Card Round 1: editorial | 1600 | |
| 556 | Diophantine equation | *special | Statement | C | VK Cup 2015 - Wild Card Round 1 {530} | PROGRAMMING | VK Cup 2015 Wild Card Round 1: editorial | 1700 | |
| 452 | Set subtraction | *special | Statement | D | VK Cup 2015 - Wild Card Round 1 {530} | PROGRAMMING | VK Cup 2015 Wild Card Round 1: editorial | 1700 | |
| 308 | Sum and product | *special | Statement | E | VK Cup 2015 - Wild Card Round 1 {530} | PROGRAMMING | VK Cup 2015 Wild Card Round 1: editorial | 1900 | |
| 107 | Jumping frogs | *special | Statement | F | VK Cup 2015 - Wild Card Round 1 {530} | PROGRAMMING | VK Cup 2015 Wild Card Round 1: editorial | 2300 | |
| 158 | Levenshtein distance | *special | Statement | G | VK Cup 2015 - Wild Card Round 1 {530} | PROGRAMMING | VK Cup 2015 Wild Card Round 1: editorial | 2300 | |
| 47 | Different variables | *special | Statement | I | VK Cup 2015 - Wild Card Round 1 {530} | PROGRAMMING | VK Cup 2015 Wild Card Round 1: editorial | 2600 | |
| 0 | Scheduler for Invokers | *special | Statement | A | VK Cup 2016 - Wild Card Round 2 {642} | PROGRAMMING | 2900 | ||
| 3623 | Da Vinci Powers | *special | Statement | A | April Fools Day Contest 2016 {656} | PROGRAMMING | 44141 | 1900 | |
| 728 | Out of Controls | *special | Statement | E | April Fools Day Contest 2016 {656} | PROGRAMMING | 44141 | 2100 | |
| 910 | Ace It! | *special | Statement | F | April Fools Day Contest 2016 {656} | PROGRAMMING | 44141 | 2100 | |
| 694 | Without Text | *special | Statement | C | April Fools Day Contest 2016 {656} | PROGRAMMING | 44141 | 2200 | |
| 961 | Rosetta Problem | *special | Statement | D | April Fools Day Contest 2016 {656} | PROGRAMMING | 44141 | 2200 | |
| 486 | You're a Professional | *special | Statement | G | April Fools Day Contest 2016 {656} | PROGRAMMING | 44141 | 2200 | |
| 638 | Lazy Caterer Sequence | *special | Statement | A | VK Cup 2016 - Wild Card Round 1 (Unofficial Open Online Mirror) {661} | PROGRAMMING | Tutorial | 1400 | |
| 228 | Seasons | *special | Statement | B | VK Cup 2016 - Wild Card Round 1 (Unofficial Open Online Mirror) {661} | PROGRAMMING | Tutorial | 1900 | |
| 132 | Maximal Difference | *special | Statement | D | VK Cup 2016 - Wild Card Round 1 (Unofficial Open Online Mirror) {661} | PROGRAMMING | Tutorial | 2100 | |
| 132 | Array Sum | *special | Statement | C | VK Cup 2016 - Wild Card Round 1 (Unofficial Open Online Mirror) {661} | PROGRAMMING | Tutorial | 2200 | |
| 84 | Divisibility Check | *special | Statement | E | VK Cup 2016 - Wild Card Round 1 (Unofficial Open Online Mirror) {661} | PROGRAMMING | Tutorial | 2200 | |
| 345 | Primes in Interval | *special | Statement | F | VK Cup 2016 - Wild Card Round 1 (Unofficial Open Online Mirror) {661} | PROGRAMMING | Tutorial | 2200 | |
| 56 | Hungarian Notation | *special | Statement | G | VK Cup 2016 - Wild Card Round 1 (Unofficial Open Online Mirror) {661} | PROGRAMMING | Tutorial | 2500 | |
| 69 | Rotate Matrix | *special | Statement | H | VK Cup 2016 - Wild Card Round 1 (Unofficial Open Online Mirror) {661} | PROGRAMMING | Tutorial | 2600 | |
| 317 | The Teacher of Physical Education | *special | Statement | B | Surprise Language Round 8 {683} | PROGRAMMING | 1600 | ||
| 322 | Symmetric Difference | *special | Statement | C | Surprise Language Round 8 {683} | PROGRAMMING | 1600 | ||
| 188 | Hammer throwing | *special | Statement | E | Surprise Language Round 8 {683} | PROGRAMMING | 1900 | ||
| 146 | Reformat the String | *special | Statement | F | Surprise Language Round 8 {683} | PROGRAMMING | 2000 | ||
| 130 | The Fraction | *special | Statement | G | Surprise Language Round 8 {683} | PROGRAMMING | 2100 | ||
| 95 | Exchange of Books | *special | Statement | H | Surprise Language Round 8 {683} | PROGRAMMING | 2100 | ||
| 38 | Loader | *special | Statement | I | Surprise Language Round 8 {683} | PROGRAMMING | 2600 | ||
| 40 | The Hero with Bombs | *special | Statement | J | Surprise Language Round 8 {683} | PROGRAMMING | 2900 | ||
| 0 | University Schedule | *special | Statement | A | VK Cup 2017 - Wild Card Round 2 {775} | PROGRAMMING | 2900 | ||
| 3185 | Numbers Joke | *special | Statement | A | April Fools Contest 2017 {784} | PROGRAMMING | 51351 | 1700 | |
| 748 | BF Calculator | *special | Statement | G | April Fools Contest 2017 {784} | PROGRAMMING | 51351 | 2100 | |
| 876 | Kids' Riddle | *special | Statement | B | April Fools Contest 2017 {784} | PROGRAMMING | 51351 | 2300 | |
| 711 | Generate Bell state | *special | Statement | B | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2000 | |
| 1013 | Generate plus state or minus state | *special | Statement | A | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2200 | |
| 654 | Generate GHZ state | *special | Statement | C | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2300 | |
| 682 | Distinguish plus state and minus state | *special | Statement | D | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2300 | |
| 558 | Distinguish Bell states | *special | Statement | E | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2400 | |
| 539 | Distinguish multi-qubit basis states | *special | Statement | F | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2400 | |
| 538 | Oracle for f(x) = k-th element of x | *special | Statement | G | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2500 | |
| 533 | Oracle for f(x) = parity of the number of 1s in x | *special | Statement | H | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2500 | |
| 401 | Deutsch-Jozsa algorithm | *special | Statement | I | Microsoft Q# Coding Contest - Summer 2018 - Warmup {1001} | PROGRAMMING | Full editorial | 2700 | |
| 389 | AND oracle | *special | Statement | G1 | Microsoft Q# Coding Contest - Winter 2019 - Warmup {1115} | PROGRAMMING | Warmup editorial | 2200 | |
| 312 | OR oracle | *special | Statement | G2 | Microsoft Q# Coding Contest - Winter 2019 - Warmup {1115} | PROGRAMMING | Warmup editorial | 2200 | |
| 231 | Palindrome checker oracle | *special | Statement | G3 | Microsoft Q# Coding Contest - Winter 2019 - Warmup {1115} | PROGRAMMING | Warmup editorial | 2200 | |
| 256 | Anti-diagonal unitary | *special | Statement | U1 | Microsoft Q# Coding Contest - Winter 2019 - Warmup {1115} | PROGRAMMING | Warmup editorial | 2200 | |
| 234 | Chessboard unitary | *special | Statement | U2 | Microsoft Q# Coding Contest - Winter 2019 - Warmup {1115} | PROGRAMMING | Warmup editorial | 2200 | |
| 197 | Block unitary | *special | Statement | U3 | Microsoft Q# Coding Contest - Winter 2019 - Warmup {1115} | PROGRAMMING | Warmup editorial | 2200 | |
| 0 | Collaboration | *special | Statement | A2 | VRt Contest 2019 (marathon) {1160} | PROGRAMMING | |||
| 62 | Building Skyscrapers | *special | Statement | A | CEOI 2019 day 1 online mirror (unrated, IOI format) {1192} | PROGRAMMING | E | ||
| 887 | Скрытый друг | *special | Statement | A | VK Cup 2019 - Квалификация (Engine) {1275} | PROGRAMMING | 250.0 | ||
| 821 | Code Review | *special | Statement | B | VK Cup 2019 - Квалификация (Engine) {1275} | PROGRAMMING | 250.0 | ||
| 669 | #define Задача B ... | *special | Statement | C | VK Cup 2019 - Квалификация (Engine) {1275} | PROGRAMMING | 1000.0 | ||
| 421 | Storage2 | *special | Statement | D | VK Cup 2019 - Квалификация (Engine) {1275} | PROGRAMMING | 2000.0 |