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Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 371 | Archer's Shot | binary search geometry math two pointers | Statement | D | Codeforces Beta Round 70 (Div. 2) {78} | PROGRAMMING | Solutions for Codeforces Beta Round #70 (Div. 2) | 2400 | |
| 1681 | Interesting Game | dp games math | Statement | C | Codeforces Beta Round 73 (Div. 1 Only) {87} | PROGRAMMING | CodeForces Beta Round #73 div. 1 analysis (particulary with div. 2) | 2100 | |
| 558 | Help Shrek and Donkey | dp games math probabilities | Statement | E | Codeforces Beta Round 78 (Div. 1 Only) {98} | PROGRAMMING | Editorial | 2500 | |
| 8845 | Bag of mice | dp games math probabilities | Statement | D | Codeforces Round 105 (Div. 2) {148} | PROGRAMMING | Codeforces Round #105 (Div. 2): editorial | 1900 | |
| 8540 | Win or Freeze | games math number theory | Statement | A | Codeforces Round 107 (Div. 1) {150} | PROGRAMMING | Tutorial | 1600 | |
| 485 | Flatland Fencing | games math | Statement | D | Codeforces Round 109 (Div. 1) {154} | PROGRAMMING | Codeforces Round #109: editorial | 2300 | |
| 738 | Wizards and Numbers | games math | Statement | C | Codeforces Round 114 (Div. 1) {167} | PROGRAMMING | Codeforces Round #114 — Tutorial | 2400 | |
| 6834 | Plate Game | constructive algorithms games math | Statement | A | Codeforces Round 124 (Div. 2) {197} | PROGRAMMING | Разбор задач | 1600 | |
| 976 | Furlo and Rublo and Game | games implementation math | Statement | E | Codeforces Round 156 (Div. 2) {255} | PROGRAMMING | Codeforces Round #156 tutorial | 2200 | |
| 1590 | Beautiful Decomposition | dp games greedy number theory | Statement | E | Codeforces Round 171 (Div. 2) {279} | PROGRAMMING | Codeforces Round #171 (Div. 2) Разбор Задач | 2100 | |
| 9318 | Alice and Bob | games math number theory | Statement | A | Codeforces Round 201 (Div. 1) {346} | PROGRAMMING | Codeforces Round #201 Editorial | 1600 | |
| 10191 | Vasya and Chess | constructive algorithms games math | Statement | D | Codeforces Round 281 (Div. 2) {493} | PROGRAMMING | Codeforces Round #281 (Div. 2) Editorial | 1700 | |
| 2434 | Board Game | games greedy implementation math | Statement | C | VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) {533} | PROGRAMMING | Разбор VK Cup Round 2 | 1700 | |
| 16850 | Simple Game | constructive algorithms games greedy implementation math | Statement | B | Codeforces Round 316 (Div. 2) {570} | PROGRAMMING | Codeforces Round #316 Editorial | 1300 | |
| 2055 | Lieges of Legendre | games math | Statement | C | Codeforces Round 334 (Div. 1) {603} | PROGRAMMING | Codeforces Round #334 Editorial | 2300 | |
| 9570 | Game | games math | Statement | R | Experimental Educational Round: VolBIT Formulas Blitz {630} | PROGRAMMING | Разбор задач Experimental Educational Round: VolBIT Formulas Blitz | 1300 | |
| 9544 | Spider Man | games math | Statement | B | Codeforces Round 366 (Div. 2) {705} | PROGRAMMING | 1200 | ||
| 1020 | Choosing Carrot | games math | Statement | E | Tinkoff Challenge - Final Round (Codeforces Round 414, rated, Div. 1 + Div. 2) {794} | PROGRAMMING | 2700 | ||
| 22127 | Sasha and Sticks | games math | Statement | A | Codeforces Round 425 (Div. 2) {832} | PROGRAMMING | Codeforces Round #425 (Div.2) Editorial | 800 | |
| 6553 | The Meaningless Game | math number theory | Statement | A | Codeforces Round 426 (Div. 1) {833} | PROGRAMMING | Codeforces Round #426 Editorial | 1700 | |
| 13162 | Godsend | games math | Statement | B | Codeforces Round 429 (Div. 2) {841} | PROGRAMMING | T | 1200 | |
| 122 | To Play or not to Play | greedy | Statement | F | Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] {856} | PROGRAMMING | Tutorial | 3100 | |
| 55469 | Mahmoud and Ehab and the even-odd game | games math | Statement | A | Codeforces Round 473 (Div. 2) {959} | PROGRAMMING | Codeforces round #473 editorial | 600 | |
| 7160 | 1-2-K Game | games math | Statement | D | Educational Codeforces Round 68 (Rated for Div. 2) {1194} | PROGRAMMING | Разбор Educational Codeforces Round 68 | 1700 | |
| 6555 | Ticket Game | games greedy math | Statement | D | Codeforces Round 585 (Div. 2) {1215} | PROGRAMMING | Codeforces Round #585 Editorial | 1700 | |
| 8264 | The Football Season | brute force math number theory | Statement | C | Codeforces Round 592 (Div. 2) {1244} | PROGRAMMING | Codeforces Round #592 (Div. 2) Tutorial | 1900 | |
| 17804 | Card Game | games greedy math | Statement | A | Good Bye 2019 {1270} | PROGRAMMING | Разбор Goodbye 2019 | 700 | |
| 4128 | Challenges in school №41 | brute force constructive algorithms games graphs greedy implementation sortings | Statement | D | Codeforces Round 632 (Div. 2) {1333} | PROGRAMMING | 1750.0 | Codeforces Round #632 (Div. 2) editorial | |
| 1104 | Lamps on a Circle | games greedy implementation interactive math | Statement | F | Codeforces Global Round 8 {1368} | PROGRAMMING | 3000.0 | Codeforces Global Round 8: editorial | |
| 27051 | Number Game | games math number theory | Statement | C | Codeforces Round 651 (Div. 2) {1370} | PROGRAMMING | 1500.0 | Editorial — Codeforces Round #651 | |
| 5714 | Omkar and Circle | brute force constructive algorithms dp games greedy | Statement | D | Codeforces Round 655 (Div. 2) {1372} | PROGRAMMING | 2000.0 | Codeforces Round #655 Editorial | 2100 |
| 2502 | Integer Game | brute force constructive algorithms games interactive math | Statement | F | Codeforces Global Round 9 {1375} | PROGRAMMING | 2000.0 | 79731 | |
| 5431 | GameGame | bitmasks constructive algorithms dp games greedy math | Statement | B | Codeforces Round 659 (Div. 1) {1383} | PROGRAMMING | 1000.0 | Codeforces Round #659 Editorial | |
| 882 | No Game No Life | games math matrices | Statement | G | Technocup 2021 - Elimination Round 3 {1411} | PROGRAMMING | 3250.0 | Technocup 2021 Elimination Round 3 and Round #692 (Div. 1 + Div. 2) Editorial | |
| 28112 | Numbers on Whiteboard | constructive algorithms data structures games implementation math | Statement | C | Educational Codeforces Round 96 (Rated for Div. 2) {1430} | PROGRAMMING | Educational Codeforces Round 96 — Editorial | ||
| 10136 | Circle Game | games geometry math | Statement | D | Codeforces Round 685 (Div. 2) {1451} | PROGRAMMING | 1750.0 | Editorial — Codeforces Round #685 | |
| 20430 | Ping-pong | constructive algorithms games math | Statement | C | Educational Codeforces Round 99 (Rated for Div. 2) {1455} | PROGRAMMING | 85186 | ||
| 1053 | Christmas Game | data structures dfs and similar dp games math trees | Statement | F | CodeCraft-21 and Codeforces Round 711 (Div. 2) {1498} | PROGRAMMING | 3000.0 | CodeCraft-21 and Codeforces Round #711 (Div. 2) Editorial | |
| 1099 | Omkar and Akmar | combinatorics games math | Statement | F | Codeforces Round 724 (Div. 2) {1536} | PROGRAMMING | 2500.0 | Codeforces Round #724 — Editorial | 2600 |
| 13578 | Deleting Divisors | games math number theory | Statement | D | Codeforces Round 726 (Div. 2) {1537} | PROGRAMMING | 1500.0 | Codeforces Round #726 (Div.2) Editorial | |
| 1696 | Purple Crayon | dp games greedy math trees | Statement | E | Codeforces Global Round 18 {1615} | PROGRAMMING | 2750.0 | Global Round 18 Editorial | |
| 1008 | Christmas Chocolates | dfs and similar dp games graphs implementation math number theory shortest paths trees | Statement | E | Codeforces Round 761 (Div. 2) {1617} | PROGRAMMING | 3000.0 | Editorial for Codeforces Round #761 (Div. 2) | |
| 2334 | Let's Play the Hat? | constructive algorithms math | Statement | F | Codeforces Round 762 (Div. 3) {1619} | PROGRAMMING | Tutorial | ||
| 7546 | K-good | constructive algorithms games math number theory | Statement | D | CodeTON Round 1 (Div. 1 + Div. 2, Rated, Prizes!) {1656} | PROGRAMMING | 2000.0 | Tutorial | |
| 1174 | Gojou and Matrix Game | data structures dp games math number theory sortings | Statement | E | Codeforces Round 779 (Div. 2) {1658} | PROGRAMMING | 2500.0 | Codeforces Round #779 (Div. 2) Editorial | |
| 16807 | Log Chopping | constructive algorithms games implementation math | Statement | A | Codeforces Global Round 20 {1672} | PROGRAMMING | 250.0 | Global Round 20 Editorial | 800 |
| 24922 | Digit Minimization | constructive algorithms games math | Statement | A | Codeforces Round 792 (Div. 1 + Div. 2) {1684} | PROGRAMMING | 500.0 | Codeforces Round #792 (Div. 1 + Div. 2) Editorial | 800 |
| 26788 | Chip Game | games math | Statement | A | Codeforces Round 814 (Div. 2) {1719} | PROGRAMMING | 500.0 | Codeforces Round #814 (Div. 1, Div. 2) Editorial | |
| 6401 | Ela and Crickets | games implementation math | Statement | C | Dytechlab Cup 2022 {1737} | PROGRAMMING | 1500.0 | Editorial of Dytechlab Cup 2022 | |
| 12741 | Even Number Addicts | dp games greedy math | Statement | C | Codeforces Global Round 22 {1738} | PROGRAMMING | 1500.0 | Editorial of Codeforces Global Round <strong>22</strong> | |
| 964 | Serval and Music Game | brute force combinatorics implementation math number theory | Statement | E | Codeforces Round 853 (Div. 2) {1789} | PROGRAMMING | 2000.0 | Codeforces Round #853 (Div. 2) Editorial | |
| 1733 | The Fox and the Complete Tree Traversal | constructive algorithms dp games implementation math trees | Statement | C | Codeforces Round 866 (Div. 1) {1819} | PROGRAMMING | 1500.0 | Codeforces Round #866 (Div.1, Div.2, based on Lipetsk Team Olympiad) Editorial | |
| 1441 | Removing Graph | games graphs math | Statement | E | Codeforces Round 868 (Div. 2) {1823} | PROGRAMMING | 2000.0 | 115465 | |
| 20773 | Tenzing and Tsondu | games math | Statement | A | CodeTON Round 5 (Div. 1 + Div. 2, Rated, Prizes!) {1842} | PROGRAMMING | 250.0 | CodeTON Round 5 Editorial | |
| 25932 | Subtraction Game | constructive algorithms games math | Statement | A | Codeforces Round 884 (Div. 1 + Div. 2) {1844} | PROGRAMMING | 500.0 | Codeforces Round #884 (Div. 1 + Div. 2) Editorial | |
| 18379 | Vika and Her Friends | constructive algorithms games math | Statement | A | Codeforces Round 885 (Div. 2) {1848} | PROGRAMMING | 500.0 | Codeforces Round #885 (Div.2) Editorial | |
| 65597 | Buttons | games greedy math | Statement | A | Codeforces Round 893 (Div. 2) {1858} | PROGRAMMING | 500.0 | Codeforces Round #893 (Div. 2) Editorial | 800 |
| 3035 | Guess Game | bitmasks combinatorics constructive algorithms data structures games math probabilities strings trees | Statement | E | Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) {1864} | PROGRAMMING | 2000.0 | Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) Editorial | |
| 1854 | Infinite Card Game | brute force dfs and similar games graphs greedy sortings | Statement | E | Educational Codeforces Round 157 (Rated for Div. 2) {1895} | PROGRAMMING | Educational Codeforces Round 157 Editorial | ||
| 91639 | Game with Integers | games math number theory | Statement | A | Codeforces Round 909 (Div. 3) {1899} | PROGRAMMING | Разбор Codeforces Round 909 (Div. 3) | ||
| 2503 | Geo Game | constructive algorithms dp games greedy interactive math | Statement | E | Codeforces Round 912 (Div. 2) {1903} | PROGRAMMING | 2250.0 | Codeforces Round #912 (Div. 2) Editorial | |
| 19841 | Training Before the Olympiad | constructive algorithms games implementation math | Statement | C | Good Bye 2023 {1916} | PROGRAMMING | 1250.0 | ||
| 208 | Tree LGM | constructive algorithms games trees | Statement | G | Hello 2024 {1919} | PROGRAMMING | 4000.0 | 3500 | |
| 36137 | Wallet Exchange | games math | Statement | A | Hello 2024 {1919} | PROGRAMMING | 250.0 | 800 | |
| 17241 | Sasha and the Casino | binary search brute force dp games greedy math | Statement | C | Codeforces Round 926 (Div. 2) {1929} | PROGRAMMING | 1500.0 | Codeforces Round #926 (Div. 2) Editorial. | |
| 25527 | Anna and the Valentine's Day Gift | games greedy math sortings | Statement | E | Codeforces Round 925 (Div. 3) {1931} | PROGRAMMING | 125878 | ||
| 1955 | Farm Game | combinatorics games math | Statement | E | CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!) {1942} | PROGRAMMING | 2500.0 | CodeTON Round 8 Editorial | |
| 340 | Sweep Line | combinatorics games math | Statement | E | April Fools Day Contest 2024 {1952} | PROGRAMMING | April Fools Day Contest 2024 Editorial | ||
| 8686 | Unfair Game | dp games greedy math | Statement | F | Codeforces Round 938 (Div. 3) {1955} | PROGRAMMING | 128243 | ||
| 16651 | Everything Nim | games greedy math sortings | Statement | A | Codeforces Round 941 (Div. 1) {1965} | PROGRAMMING | 500.0 | Codeforces Round #941 (Div. 1, Div. 2) Editorial | 1400 |
| 17364 | Permutation Game | brute force dfs and similar games graphs greedy math | Statement | D | Codeforces Round 943 (Div. 3) {1968} | PROGRAMMING | 129096 | 1300 | |
| 559 | Prime Split Game | fft games math number theory | Statement | H | Pinely Round 4 (Div. 1 + Div. 2) {1991} | PROGRAMMING | 3500.0 | Video Tutorial | |
| 5045 | Not a Nim Problem | games math number theory | Statement | E | Educational Codeforces Round 169 (Rated for Div. 2) {2004} | PROGRAMMING | Educational Codeforces Round 169 Editorial | ||
| 9292 | Iris and Game on the Tree | games graphs greedy trees | Statement | A | Codeforces Round 969 (Div. 1) {2006} | PROGRAMMING | 750.0 | Tutorial | |
| 650 | Game in Tree (Easy Version) | binary search data structures games implementation trees | Statement | F1 | Codeforces Round 973 (Div. 2) {2013} | PROGRAMMING | 2000.0 | 134298 | |
| 325 | Speedbreaker Counting (Easy Version) | combinatorics dp games greedy implementation math | Statement | F1 | Codeforces Round 975 (Div. 1) {2018} | PROGRAMMING | 1500.0 | Editorial of Codeforces Round 975 (Div. 1, Div. 2) | |
| 247 | Bit Game (Easy Version) | bitmasks brute force games math | Statement | E1 | Codeforces Round 982 (Div. 2) {2027} | PROGRAMMING | 2000.0 | Codeforces Round #982 (Div. 2) Editorial | |
| 11692 | Replacement | games greedy strings | Statement | B | Refact.ai Match 1 (Codeforces Round 985) {2029} | PROGRAMMING | 1250.0 | Refact.ai Match 1 (Codeforces Round 985) Editorial | |
| 479 | Peanuts | combinatorics dp games math | Statement | F | Codeforces Round 983 (Div. 2) {2032} | PROGRAMMING | 3000.0 | Codeforces Round 983 (Div. 2) Editorial | |
| 41063 | Sakurako and Kosuke | constructive algorithms math | Statement | A | Codeforces Round 981 (Div. 3) {2033} | PROGRAMMING | 135520 | ||
| 24402 | Game of Division | brute force games math | Statement | A | Codeforces Round 992 (Div. 2) {2040} | PROGRAMMING | 500.0 | Codeforces Round #992 (Div.2) Editorial | |
| 154 | Grid Game 3-angle | games math | Statement | F | 2024-2025 ICPC Asia Jakarta Regional Contest (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {2045} | PROGRAMMING | raRzKDJLPHcUnqTcwvGznwEdKiDWjEkd.pdf | 3000 | |
| 31980 | Game of Mathletes | games greedy sortings two pointers | Statement | C | Codeforces Round 998 (Div. 3) {2060} | PROGRAMMING | Codeforces Round 998 (Div. 3) Editorial | ||
| 1834 | Game with Binary String | data structures divide and conquer games greedy math | Statement | E | Educational Codeforces Round 175 (Rated for Div. 2) {2070} | PROGRAMMING | Video Tutorial | ||
| 17271 | Card Game | brute force games greedy math | Statement | C | Educational Codeforces Round 178 (Rated for Div. 2) {2104} | PROGRAMMING | Educational Codeforces Round 178 Editorial | ||
| 19652 | Apples in Boxes | games greedy math | Statement | B | Codeforces Round 1023 (Div. 2) {2107} | PROGRAMMING | 750.0 | Codeforces Round 1023 (Div 2) Editorial | |
| 1050 | Gellyfish and Forget-Me-Not | bitmasks games math | Statement | D | Codeforces Round 1028 (Div. 1) {2115} | PROGRAMMING | 2250.0 | Codeforces Round 1028 (Div.1, Div.2) Editorial | |
| 12783 | Catching the Krug | games math | Statement | B | Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2) {2152} | PROGRAMMING | 1500.0 | Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2) Editorial | |
| 2807 | Mimo & Yuyu | games greedy math | Statement | E | Codeforces Round 1056 (Div. 2) {2155} | PROGRAMMING | 2250.0 | Codeforces Round 1056 (Div. 2) Editorial | |
| 15653 | Round Trip | games greedy implementation math | Statement | A | Pinely Round 5 (Div. 1 + Div. 2) {2161} | PROGRAMMING | 500.0 | ||
| 16899 | Sorting Game | games greedy | Statement | A | Codeforces Round 1073 (Div. 1) {2190} | PROGRAMMING | 500.0 | Codeforces Round 1073 (Div. 1, Div. 2) Editorial | |
| 15496 | Game with a Fraction | games math | Statement | A | Codeforces Round 1079 (Div. 1) {2196} | PROGRAMMING | 500.0 | Tutorial | |
| 7686 | Divisive Battle | games greedy math number theory | Statement | E | Codeforces Round 1084 (Div. 3) {2200} | PROGRAMMING | Codeforces Round 1084 (Div. 3) Editorial | ||
| 589 | Interval Game | bitmasks combinatorics dp games greedy math probabilities | Statement | F | Codeforces Round 1091 (Div. 2) and CodeCraft 26 {2217} | PROGRAMMING | 2750.0 | ||
| 31369 | The 67th Integer Problem | brute force games implementation math | Statement | A | Codeforces Round 1090 (Div. 4) {2218} | PROGRAMMING |