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Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 6601 | Ancient Berland Circus | geometry math | Statement | C | Codeforces Beta Round 1 {1} | PROGRAMMING | 85 | 2100 | |
| 3895 | Four Segments | brute force constructive algorithms geometry implementation math | Statement | C | Codeforces Beta Round 14 (Div. 2) {14} | PROGRAMMING | Codeforces Beta Round #14 tutorial | 1800 | |
| 410 | Tetragon | geometry math | Statement | D | Codeforces Beta Round 23 {23} | PROGRAMMING | Codeforces Beta Round #23 tutorial | 2600 | |
| 1466 | Sequence of points | geometry implementation math | Statement | C | Codeforces Beta Round 24 {24} | PROGRAMMING | Codeforces Beta Round #24 solutions | 1800 | |
| 157 | DravDe saves the world | geometry math | Statement | E | Codeforces Beta Round 28 (Codeforces format) {28} | PROGRAMMING | Codeforces Round 28 - tutorial | 2700 | |
| 4489 | Find Color | constructive algorithms geometry implementation math | Statement | A | Codeforces Beta Round 39 {40} | PROGRAMMING | codeforces #39 | 1300 | |
| 139036 | Ultra-Fast Mathematician | implementation | Statement | A | Codeforces Beta Round 57 (Div. 2) {61} | PROGRAMMING | Round 57-A | 900 | |
| 408 | 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 | |
| 5056 | Depression | geometry math | Statement | B | Codeforces Beta Round 69 (Div. 2 Only) {80} | PROGRAMMING | Problem analysis: Codeforces Beta Round #69 Falling Anvils (Div. 1 - Problem B , Div. 2 - Problem D) | 1200 | |
| 432 | Rotation | *special geometry math | Statement | I | Unknown Language Round 3 {100} | PROGRAMMING | 1700 | ||
| 139 | Birthday | geometry math | Statement | E | Codeforces Beta Round 94 (Div. 1 Only) {128} | PROGRAMMING | 3219 | 2900 | |
| 2702 | Rectangle and Square | brute force geometry math | Statement | B | Codeforces Beta Round 97 (Div. 1) {135} | PROGRAMMING | Codeforces Beta Round #97: editorial | 1600 | |
| 4392 | New Year Table | geometry math | Statement | A | Codeforces Round 100 {140} | PROGRAMMING | Codeforces Round #100: problem analysis | 1700 | |
| 5830 | Hopscotch | geometry math | Statement | B | Codeforces Round 101 (Div. 2) {141} | PROGRAMMING | Codeforces Round #101 (Div. 2) Разбор Задач. | 1400 | |
| 8935 | Series of Crimes | brute force geometry implementation | Statement | A | Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) {181} | PROGRAMMING | Croc Champ 2012 — Round 2 — Editorial | 800 | |
| 1138 | Analyzing Polyline | geometry math sortings | Statement | D | Codeforces Round 123 (Div. 2) {195} | PROGRAMMING | Codeforces Round #123 (Div. 2) Разбор Задач | 1900 | |
| 1516 | Hit Ball | geometry implementation math | Statement | D | Codeforces Round 128 (Div. 2) {203} | PROGRAMMING | 1700 | ||
| 338 | Little Elephant and Triangle | geometry math | Statement | D | Codeforces Round 136 (Div. 1) {220} | PROGRAMMING | Codeforces Round #136 — Editorial | 2500 | |
| 30654 | Parallelepiped | brute force geometry math | Statement | A | Codeforces Round 138 (Div. 2) {224} | PROGRAMMING | 1100 | ||
| 579 | Donkey and Stars | data structures dp geometry math sortings | Statement | D | Codeforces Round 152 (Div. 1) {249} | PROGRAMMING | Разбор задач Codeforces Round #152 | 2600 | |
| 4759 | View Angle | brute force geometry math | Statement | C | Codeforces Round 159 (Div. 2) {257} | PROGRAMMING | Codeforces Round #159 (Div. 2) Разбор Задач | 1700 | |
| 51473 | Fancy Fence | geometry implementation math | Statement | A | Codeforces Round 165 (Div. 2) {270} | PROGRAMMING | Разбор Codeforces Round #165 | 1200 | |
| 284 | Ksusha and Square | geometry math probabilities two pointers | Statement | D | Croc Champ 2013 - Round 2 {293} | PROGRAMMING | Croc Champ 2013 — Round 2 — Editorial | 2700 | |
| 809 | Interval Cubing | data structures math | Statement | D | Codeforces Round 185 (Div. 1) {311} | PROGRAMMING | Codeforces Round #185 Editorial (Div.2 B&Div.1 E) | 2500 | |
| 5199 | Triangle | brute force geometry implementation math | Statement | A | Codeforces Round 239 (Div. 1) {407} | PROGRAMMING | Codeforces Round #239 Editorial | 1700 | |
| 404 | Roland and Rose | brute force geometry math sortings | Statement | E | Codeforces Round 262 (Div. 2) {460} | PROGRAMMING | 13465 | 2700 | |
| 251 | Gears | brute force geometry math | Statement | D | Codeforces Round 283 (Div. 1) {497} | PROGRAMMING | 2800 | ||
| 26863 | Amr and Pins | geometry math | Statement | B | Codeforces Round 287 (Div. 2) {507} | PROGRAMMING | Editorial | 1400 | |
| 22798 | Han Solo and Lazer Gun | brute force data structures geometry implementation math | Statement | B | Codeforces Round 291 (Div. 2) {514} | PROGRAMMING | Codeforces Round #291 (Div. 2) Editorial | 1400 | |
| 920 | Tavas and Pashmaks | geometry math | Statement | E | Codeforces Round 299 (Div. 2) {535} | PROGRAMMING | Codeforces Round #299 Editorial | 2900 | |
| 179 | Sasha Circle | geometry math | Statement | E | Looksery Cup 2015 {549} | PROGRAMMING | Looksery Cup 2015 Editorial | 3200 | |
| 4876 | Vanya and Triangles | brute force combinatorics data structures geometry math sortings | Statement | D | Codeforces Round 308 (Div. 2) {552} | PROGRAMMING | Codeforces #308 (Div. 2) Editorial | 1900 | |
| 10942 | Gerald's Hexagon | brute force geometry math | Statement | A | Codeforces Round 313 (Div. 1) {559} | PROGRAMMING | Codeforces Round 313 — Extended editoral | 1600 | |
| 335 | Sign Posts | brute force geometry math | Statement | D | Codeforces Round 315 (Div. 1) {568} | PROGRAMMING | Codeforces Round #315 Editorial | 2800 | |
| 4976 | A Problem about Polyline | geometry math | Statement | A | Codeforces Round 320 (Div. 1) [Bayan Thanks-Round] {578} | PROGRAMMING | Codeforces Round #320 [Bayan Thanks-Round] Editorial | 1700 | |
| 4864 | 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 | |
| 2058 | Chip 'n Dale Rescue Rangers | binary search geometry math | Statement | B | Codeforces Round 327 (Div. 1) {590} | PROGRAMMING | Codeforces Round #327 problems analysis | 2100 | |
| 383 | Ruminations on Ruminants | geometry math | Statement | D | Codeforces Round 334 (Div. 1) {603} | PROGRAMMING | Codeforces Round #334 Bonus Editorial: More Ideas on Div. 1 E | 2900 | |
| 1413 | Turn | geometry math | Statement | M | Experimental Educational Round: VolBIT Formulas Blitz {630} | PROGRAMMING | 24160 | 2000 | |
| 1494 | Pyramids | geometry math | Statement | Q | Experimental Educational Round: VolBIT Formulas Blitz {630} | PROGRAMMING | Разбор задач Experimental Educational Round: VolBIT Formulas Blitz | 2100 | |
| 16747 | Watchmen | data structures geometry math | Statement | A | Codeforces Round 345 (Div. 1) {650} | PROGRAMMING | Codeforces Round #345: editorial | 1500 | |
| 6740 | Bicycle Race | geometry implementation math | Statement | D | Codeforces Round 346 (Div. 2) {659} | PROGRAMMING | Editorial for Codeforces Round #346 (Div. 2) | 1500 | |
| 8562 | Pouring Rain | geometry math | Statement | A | Codeforces Round 349 (Div. 2) {667} | PROGRAMMING | Codeforces Round #349 Editorial | 1100 | |
| 38827 | Mahmoud and a Triangle | constructive algorithms geometry greedy math number theory sortings | Statement | B | Codeforces Round 396 (Div. 2) {766} | PROGRAMMING | Codeforces round #396 editorial | 1100 | |
| 1384 | Mice problem | geometry implementation math sortings | Statement | C | Tinkoff Challenge - Elimination Round {793} | PROGRAMMING | 51685 | 2200 | |
| 7323 | Cutting Carrot | geometry math | Statement | B | Tinkoff Challenge - Final Round (Codeforces Round 414, rated, Div. 1 + Div. 2) {794} | PROGRAMMING | Editorial | 1300 | |
| 5528 | Mister B and Angle in Polygon | constructive algorithms geometry math | Statement | B | Codeforces Round 421 (Div. 2) {820} | PROGRAMMING | Codeforces Round #421 Editorial | 1300 | |
| 3404 | Five Dimensional Points | brute force geometry math | Statement | A | Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} | PROGRAMMING | Codeforces Round #432 editorial | 1700 | |
| 5909 | Arpa and an exam about geometry | geometry math | Statement | B | Codeforces Round 432 (Div. 2, based on IndiaHacks Final Round 2017) {851} | PROGRAMMING | Codeforces Round #432 editorial | 1400 | |
| 7966 | Lazy Security Guard | brute force geometry math | Statement | B | MemSQL Start[c]UP 3.0 - Round 1 {859} | PROGRAMMING | Tutorial | 1000 | |
| 7242 | New Year and Curling | brute force geometry implementation math | Statement | C | Good Bye 2017 {908} | PROGRAMMING | Good Bye 2017 Editorial | 1500 | |
| 1791 | Guard Duty (easy) | brute force geometry greedy math | Statement | E1 | Helvetic Coding Contest 2018 online mirror (teams allowed, unrated) {958} | PROGRAMMING | helvetic-coding-contest-2018-editorial.pdf | 1800 | |
| 2411 | Ghosts | geometry math | Statement | D | Codeforces Round 478 (Div. 2) {975} | PROGRAMMING | Codeforces Round #478 (Div. 2), Editorial | 2000 | |
| 592 | A Shade of Moonlight | binary search geometry math sortings two pointers | Statement | D | Codeforces Round 487 (Div. 2) {989} | PROGRAMMING | Codeforces Round #487 (Div. 2) Editorial | 2500 | |
| 2071 | Leaving the Bar | brute force data structures geometry greedy math sortings | Statement | C | Codeforces Round 492 (Div. 1) [Thanks, uDebug!] {995} | PROGRAMMING | Editorial for Codeforces Round #492 [Thanks u-Debug!] | 2200 | |
| 133 | Shady Lady | geometry math | Statement | F | Bubble Cup 11 - Finals [Online Mirror, Div. 1] {1045} | PROGRAMMING | E | 3500 | |
| 18895 | Cover Points | geometry math | Statement | B | Codeforces Round 511 (Div. 2) {1047} | PROGRAMMING | Codeforces Round #511 Editorial | 900 | |
| 25476 | Make a triangle! | brute force geometry math | Statement | A | Codeforces Round 516 (Div. 2, by Moscow Team Olympiad) {1064} | PROGRAMMING | Codeforces Round #516 (by Moscow Team Olympiad) — Editorial | 700 | |
| 10964 | NN and the Optical Illusion | binary search geometry math | Statement | C | Codeforces Round 532 (Div. 2) {1100} | PROGRAMMING | Unofficial Tutorial | 1300 | |
| 1015 | Winding polygonal line | constructive algorithms geometry greedy math | Statement | D | Codeforces Round 559 (Div. 1) {1158} | PROGRAMMING | 66993 | 2800 | |
| 4002 | Power Transmission (Hard Edition) | data structures geometry implementation math | Statement | C2 | Codeforces Round 558 (Div. 2) {1163} | PROGRAMMING | 66943 | 2000 | |
| 1077 | Geometers Anonymous Club | data structures geometry math sortings | Statement | F | Codeforces Round 574 (Div. 2) {1195} | PROGRAMMING | Разбор Codeforces Round #574 (Div. 2) | 2700 | |
| 22613 | Water Lily | geometry math | Statement | B | Codeforces Round 576 (Div. 2) {1199} | PROGRAMMING | E | 1000 | |
| 10504 | White Sheet | geometry math | Statement | C | Codeforces Round 587 (Div. 3) {1216} | PROGRAMMING | Codeforces Round #587 (Div. 3) Editorial | 1500 | |
| 15144 | Integer Points | geometry math | Statement | A | Codeforces Round 594 (Div. 2) {1248} | PROGRAMMING | Editorial of Codeforces Round #594 (on the problems of Moscow Team Olympiad) | 900 | |
| 1782 | Point Ordering | constructive algorithms geometry interactive math | Statement | C | Codeforces Round 601 (Div. 1) {1254} | PROGRAMMING | Codeforces Round #601 Editorial | 2300 | |
| 2770 | Divide Points | constructive algorithms geometry math | Statement | E | Good Bye 2019 {1270} | PROGRAMMING | Разбор Goodbye 2019 | 2300 | |
| 1414 | New Year and Castle Construction | combinatorics geometry math sortings | Statement | E | Hello 2020 {1284} | PROGRAMMING | Hello 2020 Editorial | 2500 | |
| 13912 | Cow and Friend | geometry greedy math | Statement | B | Codeforces Round 621 (Div. 1 + Div. 2) {1307} | PROGRAMMING | 1000.0 | Codeforces Round #621 (Div. 1 + Div. 2) Editorial | 1300 |
| 27666 | Two Regular Polygons | geometry math number theory | Statement | A | Educational Codeforces Round 83 (Rated for Div. 2) {1312} | PROGRAMMING | 74640 | ||
| 16399 | Simple Polygon Embedding | binary search geometry math ternary search | Statement | C1 | Educational Codeforces Round 87 (Rated for Div. 2) {1354} | PROGRAMMING | 77593 | 1400 | |
| 6402 | Not So Simple Polygon Embedding | binary search brute force geometry math | Statement | C2 | Educational Codeforces Round 87 (Rated for Div. 2) {1354} | PROGRAMMING | 77593 | 2000 | |
| 602 | RC Kaboom Show | binary search brute force data structures geometry math | Statement | F | Educational Codeforces Round 88 (Rated for Div. 2) {1359} | PROGRAMMING | Educational Codeforces Round 88 Editorial | 2900 | |
| 39304 | FashionabLee | geometry math | Statement | A | Codeforces Round 652 (Div. 2) {1369} | PROGRAMMING | 500.0 | Codeforces Round #652 (Div. 2) Editorial | 800 |
| 282 | Cubic Lattice | geometry math matrices number theory | Statement | I | Codeforces Global Round 9 {1375} | PROGRAMMING | 4000.0 | 79731 | |
| 325 | Origami | geometry math sortings | Statement | E | Codeforces Round 658 (Div. 1) {1381} | PROGRAMMING | 3000.0 | Codeforces Round #658 Editorial | 3300 |
| 157 | Mixture | *special data structures geometry math sortings | Statement | B | Baltic Olympiad in Informatics 2020, Day 1 (IOI, Unofficial Mirror Contest, Unrated) {1386} | PROGRAMMING | T | ||
| 28904 | Bad Triangle | geometry math | Statement | A | Educational Codeforces Round 93 (Rated for Div. 2) {1398} | PROGRAMMING | Educational Codeforces Round 93 Editorial | ||
| 21918 | Fence | geometry math | Statement | A | Codeforces Round 675 (Div. 2) {1422} | PROGRAMMING | 500.0 | Codeforces Round #675 (Div. 2) Editorial | |
| 10217 | Circle Game | games geometry math | Statement | D | Codeforces Round 685 (Div. 2) {1451} | PROGRAMMING | 1750.0 | Editorial — Codeforces Round #685 | |
| 1679 | Four Points | brute force constructive algorithms flows geometry greedy math ternary search | Statement | E | Educational Codeforces Round 99 (Rated for Div. 2) {1455} | PROGRAMMING | 85186 | ||
| 17985 | Diamond Miner | geometry greedy math sortings | Statement | A | Codeforces Round 706 (Div. 1) {1495} | PROGRAMMING | 500.0 | Codeforces Round #706 Editorial | |
| 27228 | Phoenix and Puzzle | geometry math | Statement | B | Codeforces Global Round 14 {1515} | PROGRAMMING | 1000.0 | Editorial | |
| 5291 | Gift Set | binary search geometry greedy math ternary search | Statement | G | Codeforces Round 725 (Div. 3) {1538} | PROGRAMMING | Codeforces Round #725 (Div. 3) Editorial | ||
| 21687 | Contest Start | combinatorics geometry math | Statement | A | Codeforces Round 727 (Div. 2) {1539} | PROGRAMMING | 500.0 | tutorial | 1000 |
| 321 | Gregor and the Odd Cows (Hard) | brute force geometry math number theory | Statement | D2 | Codeforces Round 736 (Div. 1) {1548} | PROGRAMMING | 1000.0 | Codeforces Round 736 Editorial | |
| 1638 | Gregor and the Odd Cows (Easy) | geometry math number theory | Statement | D1 | Codeforces Round 736 (Div. 1) {1548} | PROGRAMMING | 2000.0 | Codeforces Round 736 Editorial | |
| 429 | Shortest path | brute force geometry math | Statement | G | Bubble Cup 14 - Finals Online Mirror (Unrated, ICPC Rules, Teams Preferred, Div. 1) {1599} | PROGRAMMING | BubbleCup2021.pdf | ||
| 13272 | Representative Edges | brute force geometry implementation math | Statement | C | Good Bye 2021: 2022 is NEAR {1616} | PROGRAMMING | 1500.0 | Good Bye 2021 -- Editorial | 1500 |
| 33173 | Triangles on a Rectangle | geometry greedy math | Statement | B | Educational Codeforces Round 119 (Rated for Div. 2) {1620} | PROGRAMMING | 98061 | ||
| 19630 | Weird Sum | combinatorics data structures geometry math matrices sortings | Statement | A | Codeforces Round 775 (Div. 1, based on Moscow Open Olympiad in Informatics) {1648} | PROGRAMMING | 500.0 | Codeforces Round #775 Editorial | |
| 154 | Global Warming | geometry math | Statement | G | 2021-2022 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1666} | PROGRAMMING | |||
| 5700 | Very Suspicious | binary search brute force geometry implementation math | Statement | D | Codeforces Round 788 (Div. 2) {1670} | PROGRAMMING | 2250.0 | Tutorial | 1700 |
| 603 | Crop Squares | constructive algorithms geometry interactive math | Statement | F | Codeforces Round 816 (Div. 2) {1715} | PROGRAMMING | 3000.0 | Codeforces Round #816 (Div. 2) editorial | |
| 117 | Mainak and the Bleeding Polygon | geometry implementation math | Statement | H | Codeforces Round 819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022 {1726} | PROGRAMMING | 3500.0 | Codeforces Round #819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022 Editorial | |
| 3199 | Doremy's Pegging Game | combinatorics geometry math | Statement | D | Codeforces Global Round 24 {1764} | PROGRAMMING | 1750.0 | Codeforces Global Round 24 Editorial | |
| 53392 | Following Directions | geometry implementation | Statement | B | Codeforces Round 849 (Div. 4) {1791} | PROGRAMMING | 112282 | ||
| 1425 | City Union | constructive algorithms dp geometry greedy implementation math | Statement | E | Codeforces Round 854 by cybercats (Div. 1 + Div. 2) {1799} | PROGRAMMING | 2250.0 | Codeforces Round #854 Editorial | |
| 14326 | Place for a Selfie | binary search geometry math sortings | Statement | C | Codeforces Round 862 (Div. 2) {1805} | PROGRAMMING | 1250.0 | Editorial of Codeforces Round #862 (Div. 2) | |
| 46384 | Walking Master | geometry greedy math | Statement | A | Codeforces Round 858 (Div. 2) {1806} | PROGRAMMING | 500.0 | Codeforces Round #858 (Div. 2) Editorial | |
| 478 | Fading into Fog | geometry interactive math probabilities | Statement | F | Codeforces Round 870 (Div. 2) {1826} | PROGRAMMING | 3000.0 | Codeforces Round #870 (Div. 2) Editorial | 2800 |
| 23954 | Come Together | geometry implementation math | Statement | B | Educational Codeforces Round 151 (Rated for Div. 2) {1845} | PROGRAMMING | 117791 | ||
| 22830 | Rudolph and Christmas Tree | constructive algorithms geometry math | Statement | D | Codeforces Round 883 (Div. 3) {1846} | PROGRAMMING | |||
| 36854 | Cardboard for Pictures | binary search geometry implementation math | Statement | E | Codeforces Round 886 (Div. 4) {1850} | PROGRAMMING | Codeforces Round #886 (Div. 4) Editorial | ||
| 15746 | The Morning Star | combinatorics data structures geometry implementation math sortings | Statement | G | Codeforces Round 886 (Div. 4) {1850} | PROGRAMMING | Codeforces Round #886 (Div. 4) Editorial | ||
| 27271 | 2D Traveling | geometry math shortest paths | Statement | B | Codeforces Round 896 (Div. 2) {1869} | PROGRAMMING | 750.0 | Codeforces Round 896 (Div. 1, Div. 2) Editorial | |
| 18221 | Fear of the Dark | binary search geometry math | Statement | B | Educational Codeforces Round 156 (Rated for Div. 2) {1886} | PROGRAMMING | Educational Codeforces Round 156 Editorial | ||
| 66 | Innovative Washing Machine | geometry math two pointers | Statement | I | 2023-2024 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1912} | PROGRAMMING | 3300 | ||
| 1405 | Fractal Origami | combinatorics geometry math matrices | Statement | C | Codeforces Round 921 (Div. 1) {1924} | PROGRAMMING | 1500.0 | Codeforces Round 921 (Div. 1, Div. 2) Editorial | |
| 24548 | Rectangle Cutting | constructive algorithms geometry greedy math | Statement | A | Codeforces Round 924 (Div. 2) {1928} | PROGRAMMING | 500.0 | Codeforces Round 924 Editorial | |
| 8229 | Find a Mine | constructive algorithms geometry greedy interactive math | Statement | C | Codeforces Round 931 (Div. 2) {1934} | PROGRAMMING | 1500.0 | Tutorial | |
| 6957 | Bessie's Birthday Cake (Hard Version) | geometry greedy math | Statement | C2 | CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!) {1942} | PROGRAMMING | 750.0 | CodeTON Round 8 Editorial | |
| 12546 | Bessie's Birthday Cake (Easy Version) | geometry math | Statement | C1 | CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!) {1942} | PROGRAMMING | 1250.0 | CodeTON Round 8 Editorial | |
| 12706 | Circle Perimeter | binary search brute force dfs and similar geometry implementation math | Statement | F | Codeforces Round 944 (Div. 4) {1971} | PROGRAMMING | Codeforces Round 944 (Div. 4) Editorial | 1600 | |
| 4442 | Field Division (easy version) | data structures geometry math sortings | Statement | F1 | Codeforces Round 950 (Div. 3) {1980} | PROGRAMMING | 130135 | ||
| 17959 | Black Circles | brute force constructive algorithms geometry greedy math | Statement | C | EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) {2002} | PROGRAMMING | 1000.0 | EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) Editorial | |
| 19117 | Satyam and Counting | geometry math | Statement | D | Codeforces Round 971 (Div. 4) {2009} | PROGRAMMING | Codeforces Round 971 (Div. 4) Editorial | ||
| 20500 | Perpendicular Segments | brute force geometry math | Statement | A | Educational Codeforces Round 171 (Rated for Div. 2) {2026} | PROGRAMMING | Educational Codeforces Round 171 Editorial | ||
| 22203 | Rectangle Arrangement | geometry implementation math | Statement | A | Codeforces Round 982 (Div. 2) {2027} | PROGRAMMING | 500.0 | Codeforces Round #982 (Div. 2) Editorial | |
| 21354 | Tender Carpenter | dp geometry implementation math | Statement | A | Good Bye 2024: 2025 is NEAR {2053} | PROGRAMMING | 500.0 | Good Bye 2024: 2025 is NEAR Editorial | |
| 90 | Cosmic Divide | brute force geometry hashing math strings | Statement | F | Codeforces Round 996 (Div. 2) {2055} | PROGRAMMING | 3500.0 | Codeforces Round 996 (Div. 2) Editorial | |
| 14926 | Kevin and Geometry | brute force constructive algorithms data structures geometry greedy implementation math two pointers | Statement | B | IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2) {2061} | PROGRAMMING | 1000.0 | IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2) Editorial | |
| 630 | Traveling Salescat | dp geometry greedy math sortings | Statement | F | Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2) {2062} | PROGRAMMING | 3500.0 | Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2) Editorial | |
| 12606 | Do You Love Your Hero and His Two-Hit Multi-Target Attacks? | binary search constructive algorithms geometry greedy math | Statement | E | Codeforces Round 1006 (Div. 3) {2072} | PROGRAMMING | Codeforces Round 1006 (Div. 3) Editorial | ||
| 6807 | Empty Triangle | geometry interactive probabilities | Statement | E | Codeforces Round 1009 (Div. 3) {2074} | PROGRAMMING | Codeforces Round 1009 (Div. 3) — Editorial | ||
| 1049 | Bermuda Triangle | chinese remainder theorem constructive algorithms geometry math number theory | Statement | C | Codeforces Round 1021 (Div. 1) {2097} | PROGRAMMING | 1500.0 | 142316 | |
| 18758 | Line Segments | geometry greedy math | Statement | B | Codeforces Round 1035 (Div. 2) {2119} | PROGRAMMING | 1000.0 | Codeforces Round 1035 (Div. 2) Editorial | |
| 20567 | Square of Rectangles | geometry math | Statement | A | Codeforces Round 1033 (Div. 2) and CodeNite 2025 {2120} | PROGRAMMING | 500.0 | Codeforces Round 1033 (Div. 2) and CodeNite 2025 Editorial | |
| 9490 | khba Loves to Sleep! | binary search data structures geometry implementation math | Statement | E | Codeforces Round 1062 (Div. 4) {2167} | PROGRAMMING | Arpa Video Tutorial | ||
| 8941 | Removal of a Sequence (Easy Version) | binary search bitmasks geometry implementation math number theory | Statement | D1 | Educational Codeforces Round 184 (Rated for Div. 2) {2169} | PROGRAMMING | Educational Codeforces Round 184 Editorial | ||
| 6005 | Blackslex and Girls | constructive algorithms geometry math | Statement | E | Codeforces Round 1071 (Div. 3) {2179} | PROGRAMMING | Codeforces Round 1071 (Div. 3) Editorial | ||
| 1431 | Minimum Influence | binary search data structures geometry greedy implementation math sortings two pointers | Statement | E | Educational Codeforces Round 190 (Rated for Div. 2) {2230} | PROGRAMMING | Educational Codeforces Round 190 — Editorial |