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1 2 >Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 265295 | Theatre Square | math | Statement | A | Codeforces Beta Round 1 {1} | PROGRAMMING | 85 | 1300 | |
| 4737 | Jumping Jack | math | Statement | B | Codeforces Beta Round 11 {11} | PROGRAMMING | 1700 | ||
| 1475 | Laser | math | Statement | B | Codeforces Beta Round 15 {15} | PROGRAMMING | Codeforces Beta #15 Tutorial (Incomplete) | 1700 | |
| 3914 | Equation | math | Statement | B | Codeforces Alpha Round 20 (Codeforces format) {20} | PROGRAMMING | 2600 | ||
| 2175 | Flea | math | Statement | C | Codeforces Beta Round 32 (Div. 2, Codeforces format) {32} | PROGRAMMING | Beta Round 32 | 1700 | |
| 3992 | Cubical Planet | math | Statement | D | School Team Contest 1 (Winter Computer School 2010/11) {39} | PROGRAMMING | School Team Contest #1 (Winter Computer School 2010/11): Problem K Tutorial | 1100 | |
| 1173 | Repaintings | math | Statement | B | Codeforces Beta Round 39 {40} | PROGRAMMING | codeforces #39 | 1600 | |
| 142 | Interesting Sequence | math | Statement | D | Codeforces Beta Round 39 {40} | PROGRAMMING | 2600 | ||
| 716 | Hyperdrive | math | Statement | D | School Team Contest 2 (Winter Computer School 2010/11) {44} | PROGRAMMING | 1900 | ||
| 784 | The Race | math | Statement | C | School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round 45 (ACM-ICPC Rules) {48} | PROGRAMMING | 1800 | ||
| 2494 | Sum | math | Statement | B | Codeforces Beta Round 46 (Div. 2) {49} | PROGRAMMING | 1600 | ||
| 363 | Square Equation Roots | math | Statement | E | Codeforces Beta Round 47 {50} | PROGRAMMING | 2300 | ||
| 718 | Capture Valerian | math | Statement | C | Codeforces Beta Round 57 (Div. 2) {61} | PROGRAMMING | 1900 | ||
| 3294 | Cookies | math | Statement | A | Codeforces Beta Round 64 {70} | PROGRAMMING | Analysis Codeforces Beta Round #64 | 1400 | |
| 135 | Security System | math | Statement | E | Codeforces Beta Round 71 {79} | PROGRAMMING | 2800 | ||
| 6272 | Magical Array | math | Statement | A | Codeforces Beta Round 72 (Div. 1 Only) {83} | PROGRAMMING | разбор E | 1400 | |
| 1390 | Reflection | math | Statement | A | Yandex.Algorithm 2011: Round 2 {86} | PROGRAMMING | Problemset analysis (Yandex, Round 2) | 1800 | |
| 14196 | Cifera | math | Statement | A | Codeforces Beta Round 86 (Div. 2 Only) {114} | PROGRAMMING | Codeforces Beta Round #86 Editorial | 1100 | |
| 600 | Plumber | math | Statement | C | Codeforces Beta Round 87 (Div. 1 Only) {115} | PROGRAMMING | 2400 | ||
| 1133 | Squares | math | Statement | B | Codeforces Beta Round 92 (Div. 1 Only) {123} | PROGRAMMING | Codeforces Beta Round #92 - Analysis | 1900 | |
| 38725 | The number of positions | math | Statement | A | Codeforces Beta Round 92 (Div. 2 Only) {124} | PROGRAMMING | Codeforces Beta Round #92 - Analysis | 1000 | |
| 2735 | Measuring Lengths in Baden | math | Statement | A | Codeforces Testing Round 2 {125} | PROGRAMMING | 1400 | ||
| 2901 | Problem About Equation | math | Statement | A | VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) {174} | PROGRAMMING | VK Cup 2012 Round 3 — Разбор | 1200 | |
| 5949 | Plant | math | Statement | A | Codeforces Round 118 (Div. 1) {185} | PROGRAMMING | Tutorial | 1300 | |
| 3541 | Square | math | Statement | B | Codeforces Round 122 (Div. 2) {194} | PROGRAMMING | Editoral Codeforces Round #122 | 1300 | |
| 4644 | Limit | math | Statement | B | Codeforces Round 124 (Div. 2) {197} | PROGRAMMING | Разбор задач | 1400 | |
| 4006 | Flying Saucer Segments | math | Statement | A | Codeforces Round 140 (Div. 1) {226} | PROGRAMMING | 1500 | ||
| 320 | Endless Matrix | math | Statement | E | Codeforces Round 152 (Div. 1) {249} | PROGRAMMING | 2500 | ||
| 2143 | Special Task | math | Statement | A2 | ABBYY Cup 3.0 {316} | PROGRAMMING | ABBYY Cup 3.0. Solutions | 1400 | |
| 115631 | Even Odds | math | Statement | A | Codeforces Round 188 (Div. 2) {318} | PROGRAMMING | 7956 | 1000 | |
| 19840 | Hungry Sequence | math | Statement | B | Codeforces Round 191 (Div. 2) {327} | PROGRAMMING | fegh | 1300 | |
| 169 | Evil | math | Statement | E | Codeforces Round 192 (Div. 1) {329} | PROGRAMMING | Codeforces Round #192 Editorial | 3100 | |
| 1218 | Vasily the Bear and Fly | math | Statement | B | Codeforces Round 195 (Div. 2) {336} | PROGRAMMING | Tutorial Codeforces Round #195 (Div. 2) | 1900 | |
| 7684 | The Wall | math | Statement | A | Codeforces Round 198 (Div. 2) {340} | PROGRAMMING | Tutorial | 1300 | |
| 443 | Fox and Perfect Sets | math | Statement | D | Codeforces Round 228 (Div. 1) {388} | PROGRAMMING | Codeforces Round #228 — Editorial | 2700 | |
| 975 | Blocked Points | math | Statement | A | Codeforces Round 230 (Div. 1) {392} | PROGRAMMING | 500.0 | 83942 | |
| 575 | Very Beautiful Number | math | Statement | B | Codeforces Round 231 (Div. 2) {394} | PROGRAMMING | 1000.0 | ||
| 154 | On Iteration of One Well-Known Function | math | Statement | E | Codeforces Round 232 (Div. 1) {396} | PROGRAMMING | 2500.0 | Codeforces Round #232 Editorial (restored) | |
| 168 | Olympic Games | math | Statement | E | Codeforces Round 235 (Div. 2) {401} | PROGRAMMING | Codeforces Round #235 (Div. 2) — Tutorial | 2500 | |
| 5436 | Magic Formulas | math | Statement | C | Codeforces Round 242 (Div. 2) {424} | PROGRAMMING | Codeforces Round #242 (Div. 2) Editorial | 1600 | |
| 4777 | Count Good Substrings | math | Statement | D | Codeforces Round 258 (Div. 2) {451} | PROGRAMMING | Codeforces Round #258 Editorial | 2100 | |
| 5750 | Dreamoon and Sums | math | Statement | C | Codeforces Round 272 (Div. 2) {476} | PROGRAMMING | Editorial | 1700 | |
| 1631 | Vanya and Field | math | Statement | E | Codeforces Round 280 (Div. 2) {492} | PROGRAMMING | Разбор задач | 2200 | |
| 485 | Vasya and Polynomial | math | Statement | E | Codeforces Round 281 (Div. 2) {493} | PROGRAMMING | Codeforces Round #281 (Div. 2) Editorial | 2900 | |
| 20388 | Drazil and Date | math | Statement | A | Codeforces Round 292 (Div. 2) {515} | PROGRAMMING | Codeforces Round #292 Editorial | 1100 | |
| 5032 | Polycarpus' Dice | math | Statement | C | Codeforces Round 298 (Div. 2) {534} | PROGRAMMING | 1600 | ||
| 269 | Geometric Progressions | math | Statement | E | Codeforces Round 317 [AimFund Thanks-Round] (Div. 1) {571} | PROGRAMMING | Codeforces Round #317 [AimFund Thanks-Round] Editorial | 3200 | |
| 45626 | Olesya and Rodion | math | Statement | A | Codeforces Round 324 (Div. 2) {584} | PROGRAMMING | Tutorial | 1100 | |
| 14137 | Duff in Love | math | Statement | B | Codeforces Round 326 (Div. 2) {588} | PROGRAMMING | 1400 | ||
| 8639 | The Monster and the Squirrel | math | Statement | B | Codeforces Round 328 (Div. 2) {592} | PROGRAMMING | Codeforces Round #328 Problem Analysis | 1200 | |
| 3069 | The Big Race | math | Statement | C | Codeforces Round 328 (Div. 2) {592} | PROGRAMMING | 1700 | ||
| 4539 | Divisibility | math | Statement | A | Testing Round 12 {597} | PROGRAMMING | 1600 | ||
| 26801 | Tricky Sum | math | Statement | A | Educational Codeforces Round 1 {598} | PROGRAMMING | Editorial | 1000 | |
| 189301 | Elephant | math | Statement | A | Codeforces Round 340 (Div. 2) {617} | PROGRAMMING | Tutorial | 700 | |
| 3894 | The Sum of the k-th Powers | math | Statement | F | Educational Codeforces Round 7 {622} | PROGRAMMING | Editorial of Educational Codeforces Round 7 | 2600 | |
| 10361 | Save Luke | math | Statement | A | AIM Tech Round (Div. 2) {624} | PROGRAMMING | AIM Tech Round Tutorial | 900 | |
| 11082 | Hexagons! | math | Statement | D | Experimental Educational Round: VolBIT Formulas Blitz {630} | PROGRAMMING | Разбор задач Experimental Educational Round: VolBIT Formulas Blitz | 1200 | |
| 7459 | Moore's Law | math | Statement | B | Experimental Educational Round: VolBIT Formulas Blitz {630} | PROGRAMMING | Разбор задач Experimental Educational Round: VolBIT Formulas Blitz | 1400 | |
| 4739 | Forecast | math | Statement | N | Experimental Educational Round: VolBIT Formulas Blitz {630} | PROGRAMMING | Разбор задач Experimental Educational Round: VolBIT Formulas Blitz | 1500 | |
| 2339 | A rectangle | math | Statement | E | Experimental Educational Round: VolBIT Formulas Blitz {630} | PROGRAMMING | 2100 | ||
| 10857 | Little Artem and Presents | math | Statement | A | Codeforces Round 348 (VK Cup 2016 Round 2, Div. 2 Edition) {669} | PROGRAMMING | VK Cup 2016 — Раунд 2 (editorial) | 800 | |
| 14989 | Infinite Sequence | math | Statement | A | Codeforces Round 353 (Div. 2) {675} | PROGRAMMING | Tutorial | 1100 | |
| 895 | The Last Fight Between Human and AI | math | Statement | E | Codeforces Round 354 (Div. 2) {676} | PROGRAMMING | Editorial | 2300 | |
| 3376 | Road to Post Office | math | Statement | D | Educational Codeforces Round 15 {702} | PROGRAMMING | 46324 | 1900 | |
| 1354 | Two Arithmetic Progressions | math | Statement | D | Educational Codeforces Round 16 {710} | PROGRAMMING | Editorial of Educational Codeforces Round 16 | 2500 | |
| 10683 | Parade | math | Statement | B | Codeforces Round 378 (Div. 2) {733} | PROGRAMMING | 1100 | ||
| 6991 | Table Tennis Game 2 | math | Statement | C | Codeforces Round 397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) {765} | PROGRAMMING | Codeforces Round #397 Editorial | 1300 | |
| 458 | Marmots (easy) | math | Statement | D | Helvetic Coding Contest 2017 online mirror (teams allowed, unrated) {802} | PROGRAMMING | 2100 | ||
| 254 | Marmots (medium) | math | Statement | E | Helvetic Coding Contest 2017 online mirror (teams allowed, unrated) {802} | PROGRAMMING | helvetic-coding-contest-2017-editorial.pdf | 2400 | |
| 20335 | Key races | math | Statement | A | Codeforces Round 427 (Div. 2) {835} | PROGRAMMING | Editorial | 700 | |
| 669 | Rainbow Balls | math | Statement | F | Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} | PROGRAMMING | Codeforces Round #432 editorial | 2800 | |
| 159 | Circle of Numbers | math | Statement | G | MemSQL Start[c]UP 3.0 - Round 1 {859} | PROGRAMMING | Tutorial | 2900 | |
| 133 | El Toll Caves | math | Statement | G | Codeforces Round 438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) {868} | PROGRAMMING | 3300 | ||
| 13748 | The Eternal Immortality | math | Statement | B | Codeforces Round 439 (Div. 2) {869} | PROGRAMMING | Tutorial | 1100 | |
| 9399 | Trip For Meal | math | Statement | A | Codeforces Round 441 (Div. 2, by Moscow Team Olympiad) {876} | PROGRAMMING | 1000 | ||
| 1924 | A Determined Cleanup | math | Statement | B | Codeforces Round 462 (Div. 1) {933} | PROGRAMMING | 2100 | ||
| 11287 | Quirky Quantifiers | math | Statement | A | April Fools Contest 2018 {952} | PROGRAMMING | April Fools Day Contest 2018: editorial | 800 | |
| 551 | Circles of Waiting | math | Statement | E | Tinkoff Internship Warmup Round 2018 and Codeforces Round 475 (Div. 1) {963} | PROGRAMMING | Editorial Tinkoff Internship Warmup Round 2018 and Codeforces Round #475 (Div. 1 + Div. 2) | 3100 | |
| 4366 | Messages | math | Statement | B | Tinkoff Internship Warmup Round 2018 and Codeforces Round 475 (Div. 2) {964} | PROGRAMMING | Editorial Tinkoff Internship Warmup Round 2018 and Codeforces Round #475 (Div. 1 + Div. 2) | 1300 | |
| 9711 | Splits | math | Statement | A | Tinkoff Internship Warmup Round 2018 and Codeforces Round 475 (Div. 2) {964} | PROGRAMMING | Editorial Tinkoff Internship Warmup Round 2018 and Codeforces Round #475 (Div. 1 + Div. 2) | 900 | |
| 2115 | Greedy Arkady | math | Statement | C | Codeforces Round 476 (Div. 2) [Thanks, Telegram!] {965} | PROGRAMMING | Analysis of Codeforces Round #476 (Div. 2) [Thanks, Telegram!] | 1900 | |
| 9573 | Paper Airplanes | math | Statement | A | Codeforces Round 476 (Div. 2) [Thanks, Telegram!] {965} | PROGRAMMING | Analysis of Codeforces Round #476 (Div. 2) [Thanks, Telegram!] | 900 | |
| 13847 | Pizza, Pizza, Pizza!!! | math | Statement | A | Codeforces Round 482 (Div. 2) {979} | PROGRAMMING | Codeforces Round #482 (Div. 2) Editorial | 1000 | |
| 11650 | High School: Become Human | math | Statement | B | Codeforces Round 485 (Div. 2) {987} | PROGRAMMING | Codeforces Round #485 Editorial | 1200 | |
| 4620 | Nastya and a Wardrobe | math | Statement | C | Codeforces Round 489 (Div. 2) {992} | PROGRAMMING | 60083 | 1700 | |
| 767 | Game | math | Statement | D | Codeforces Round 492 (Div. 1) [Thanks, uDebug!] {995} | PROGRAMMING | Editorial for Codeforces Round #492 [Thanks u-Debug!] | 2400 | |
| 10981 | Piles With Stones | math | Statement | A | Codeforces Round 500 (Div. 2) [based on EJOI] {1013} | PROGRAMMING | Codeforces Round #500 (based on EJOI 2018) — Editorial | 800 | |
| 9008 | New Building for SIS | math | Statement | A | Codeforces Round 503 (by SIS, Div. 2) {1020} | PROGRAMMING | Codeforces Round #503 (based on SIS olympiad) — Editorial | 1100 | |
| 10868 | Pair of Toys | math | Statement | B | Codeforces Round 504 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final) {1023} | PROGRAMMING | Codeforces Round 504 Editorial | 1100 | |
| 496 | Make Square | math | Statement | H | AIM Tech Round 5 (rated, Div. 1 + Div. 2) {1028} | PROGRAMMING | 61493 | 2900 | |
| 10179 | Function Height | math | Statement | A | Educational Codeforces Round 50 (Rated for Div. 2) {1036} | PROGRAMMING | 61727 | 1000 | |
| 5720 | Diagonal Walking v.2 | math | Statement | B | Educational Codeforces Round 50 (Rated for Div. 2) {1036} | PROGRAMMING | 61727 | 1600 | |
| 14064 | Buying a TV Set | math | Statement | B | Codeforces Round 509 (Div. 2) {1041} | PROGRAMMING | Codeforces Round #509 (Div. 2) Editorial | 1100 | |
| 377 | Self-exploration | math | Statement | H | Bubble Cup 11 - Finals [Online Mirror, Div. 1] {1045} | PROGRAMMING | E | 2700 | |
| 19997 | Little C Loves 3 I | math | Statement | A | Codeforces Round 511 (Div. 2) {1047} | PROGRAMMING | Codeforces Round #511 Editorial | 800 | |
| 7557 | Equations of Mathematical Magic | math | Statement | B | Codeforces Round 516 (Div. 2, by Moscow Team Olympiad) {1064} | PROGRAMMING | Codeforces Round #516 (by Moscow Team Olympiad) — Editorial | 1200 | |
| 14604 | Vova and Train | math | Statement | A | Codeforces Round 515 (Div. 3) {1066} | PROGRAMMING | 62419 | 1100 | |
| 6851 | Birthday | math | Statement | A | Codeforces Round 518 (Div. 2) [Thanks, Mail.Ru!] {1068} | PROGRAMMING | E | 1300 | |
| 30121 | Frog Jumping | math | Statement | A | Codeforces Round 521 (Div. 3) {1077} | PROGRAMMING | Codeforces Round #521 (Div. 3) Editorial | 700 | |
| 18221 | Petya and Origami | math | Statement | A | Codeforces Round 524 (Div. 2) {1080} | PROGRAMMING | Codeforces Round #524 (Div. 2) Editorial | 700 |