| Problem Name | Online Judge | Year | Contest | Difficulty Level | |
|---|---|---|---|---|---|
| 1 | Equipment Box | SPOJ | 1 | ||
| 2 | Triangle From Centroid | SPOJ | 1 | ||
| 3 | One Geometry Problem | SPOJ | 1 | ||
| 4 | Maximal Quadrilateral Area | SPOJ | 1 | ||
| 5 | Sphere in a tetrahedron | SPOJ | 1 | ||
| 6 | Lifting the Stone | SPOJ | 1 | ||
| 7 | Triangle | Codeforces | Codeforces Beta Round #6 (Div. 2 Only) | 1 | |
| 8 | Fancy Fence | Codeforces | Codeforces Round #165 (Div. 2) | 1 | |
| 9 | Amr and Pins | Codeforces | Codeforces Round #287 (Div. 2) | 1 | |
| 10 | Han Solo and Lazer Gun | Codeforces | Codeforces Round #291 (Div. 2) | 1 | |
| 11 | Currency System in Geraldion | Codeforces | Codeforces Round #313 (Div. 2) | 1 | |
| 12 | Colourful Flowers | UVA | 1 | ||
| 13 | Is This Integration ? | UVA | 1 | ||
| 14 | The Grazing Cow | UVA | 1 | ||
| 15 | Carmichael Numbers | UVA | 1 | ||
| 16 | Gerald's Hexagon | Codeforces | Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) | 1 | |
| 17 | Julka | SPOJ | 1 | ||
| 18 | Beru-taxi | Codeforces | Codeforces Round #367 (Div. 2) | 1 | |
| 19 | Gleb And Pizza | Codeforces | Codeforces Round #430 (Div. 2) | 1 | |
| 20 | Mahmoud and a Triangle | Codeforces | Codeforces Round #396 (Div. 2) | 1 | |
| 21 | Trace | Codeforces | Codeforces Round #110 (Div. 2) | 2 | |
| 22 | Wasted Time | Codeforces | Codeforces Beta Round #93 (Div. 2 Only) | 2 | |
| 23 | The Ant | SPOJ | 2 | ||
| 24 | Goal for Raúl | SPOJ | 2 | ||
| 25 | Doors and Penguins | Live Archive | 2006 | North America - Mid-Atlantic USA & North America - Rocky Mountain | 2 |
| 26 | Area | TJU | 2 | ||
| 27 | Land Acquisition | SPOJ | 2 | ||
| 28 | Pipe | PKU | 2 | ||
| 29 | Handball | UVA | 2 | ||
| 30 | Sunny Mountains | UVA | 2 | ||
| 31 | Area | UVA | 2 | ||
| 32 | Beavergnaw | UVA | 2 | ||
| 33 | Convex Hull Finding | UVA | 2 | ||
| 34 | Railway | UVA | 2 | ||
| 35 | Packing polygons | UVA | 2 | ||
| 36 | Colourful Flowers | URI | 2 | ||
| 37 | Soya Milk | UVA | 2 | ||
| 38 | Overlapping Rectangles | UVA | 2 | ||
| 39 | The easiest way | UVA | 2 | ||
| 40 | Elevator | URI | 2 | ||
| 41 | Crazy Town | Codeforces | Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) | 2 | |
| 42 | Pouring Rain | Codeforces | Codeforces Round #349 (Div. 2) | 2 | |
| 43 | Parallelogram is Back | Codeforces | Codeforces Round #388 (Div. 2) | 2 | |
| 44 | Rings and Glue | UVA | 2 | ||
| 45 | Gleaming the Cubes | UVA | 2 | ||
| 46 | I Conduit | SPOJ | 3 | ||
| 47 | Geometry and a Square | SPOJ | 3 | ||
| 48 | Area of circles | SPOJ | 3 | ||
| 49 | Air Strike | SPOJ | 3 | ||
| 50 | New Year Table | Codeforces | Codeforces Round #100 | 3 | |
| 51 | Calculate the Area | SPOJ | 3 | ||
| 52 | Treasure Hunt | PKU | 3 | ||
| 53 | Point on Spiral | Codeforces | Codeforces Round #171 (Div. 2) | 3 | |
| 54 | Athletics Track | UVA | 3 | ||
| 55 | Convex Hull | UVA | 3 | ||
| 56 | Gifts in a Hexagonal Box | UVA | 3 | ||
| 57 | Bright Lights | UVA | 3 | ||
| 58 | Bounding box | UVA | 3 | ||
| 59 | SPIRAL RUN | SPOJ | 3 | ||
| 60 | Bicycle Race | Codeforces | Codeforces Round #346 (Div. 2) | 3 | |
| 61 | Constellation | Codeforces | Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) | 3 | |
| 62 | Anton and Lines | Codeforces | Codeforces Round #329 (Div. 2) | 3 | |
| 63 | A Problem about Polyline | Codeforces | Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] | 3 | |
| 64 | Coat of Anticubism | Codeforces | Codeforces Round #349 (Div. 2) | 3 | |
| 65 | Mister B and Angle in Polygon | Codeforces | Codeforces Round #421 (Div. 2) | 3 | |
| 66 | Arpa and an exam about geometry | Codeforces | Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017) | 3 | |
| 67 | Geometry Problem | Live Archive | 2009 | Asia - Amritapuri | 3 |
| 68 | Magic Box | Codeforces | Codeforces Round #143 (Div. 2) | 4 | |
| 69 | Where do I Turn? | Codeforces | Codeforces Round #140 (Div. 2) | 4 | |
| 70 | Hopscotch | Codeforces | Codeforces Round #101 (Div. 2) | 4 | |
| 71 | Depression | Codeforces | Codeforces Beta Round #69 (Div. 2 Only) | 4 | |
| 72 | Triangle | Codeforces | Codeforces Beta Round #18 (Div. 2 Only) | 4 | |
| 73 | Running Student | Codeforces | Codeforces Beta Round #9 (Div. 2 Only) | 4 | |
| 74 | Ancient Berland Circus | Codeforces | Codeforces Beta Round #1 | 4 | |
| 75 | Will Indiana Jones Get There | SPOJ | 4 | ||
| 76 | Face the mate | SPOJ | 4 | ||
| 77 | Fence | PKU | 4 | ||
| 78 | Captain Marmot | Codeforces | Codeforces Round #271 (Div. 2) | 4 | |
| 79 | Peter and Snow Blower | Codeforces | Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) | 4 | |
| 80 | Vanya and Triangles | Codeforces | Codeforces Round #308 (Div. 2) | 4 | |
| 81 | View Angle | Codeforces | Codeforces Round #159 (Div. 2) | 4 | |
| 82 | Buns | Codeforces | Codeforces Beta Round #82 (Div. 2) | 4 | |
| 83 | Tell Your World | Codeforces | Codeforces Round #431 (Div. 2) | 4 | |
| 84 | The Sultan's Problem | UVA | 4 | ||
| 85 | Chocolate Chip Cookies | UVA | 4 | ||
| 86 | The Teacher's Side of Math | Live Archive | 2007 | Asia - Tokyo | 4 |
| 87 | Intersection of Two Prisms | Live Archive | 2010 | Asia - Tokyo | 4 |
| 88 | Frontier | Timus | 4 | ||
| 89 | Dog Distance | UVA | 5 | ||
| 90 | Surrounded | Codeforces | Codeforces Round #120 (Div. 2) | 5 | |
| 91 | Series of Crimes | Codeforces | Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) | 5 | |
| 92 | Rectangle and Square | Codeforces | Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) | 5 | |
| 93 | Four Segments | Codeforces | Codeforces Beta Round #14 (Div. 2) | 5 | |
| 94 | Area in Triangle | PKU | 5 | ||
| 95 | 4-point polyline | Codeforces | MemSQL Start[c]UP 2.0 - Round 1 | 5 | |
| 96 | Equilateral Triangle in a Triangle Grid | UVA | 5 | ||
| 97 | Number of Parallelograms | Codeforces | Educational Codeforces Round 11 | 5 | |
| 98 | Nearest vectors | Codeforces | Educational Codeforces Round 1 | 5 | |
| 99 | Chip 'n Dale Rescue Rangers | Codeforces | Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2) | 5 | |
| 100 | Points on Plane | Codeforces | Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) | 5 | |
| 101 | Restore Cube | Codeforces | Codeforces Round #265 (Div. 1) | 5 | |
| 102 | Tricky Function | Codeforces | Codeforces Round #245 (Div. 1) | 5 | |
| 103 | Cupboard and Balloons | Codeforces | Codeforces Round #199 (Div. 2) | 5 | |
| 104 | Kalila and Dimna in the Logging Industry | Codeforces | Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) | 5 | |
| 105 | An overnight dance in discotheque | Codeforces | Codeforces Round #418 (Div. 2) | 5 | |
| 106 | Nature Reserve | Codeforces | Codeforces Round #514 (Div. 2) | 5 | |
| 107 | All Souls Night | UVA | 6 | ||
| 108 | Hit Ball | Codeforces | Codeforces Round #128 (Div. 2) | 6 | |
| 109 | Polygons | Codeforces | Codeforces Round #113 (Div. 2) | 6 | |
| 110 | Shooting Gallery | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 6 | |
| 111 | Maximal Area Quadrilateral | Codeforces | Codeforces Round #198 (Div. 2) | 6 | |
| 112 | Heavy Disc | SGU | 6 | ||
| 113 | Area of Two Circles' Intersection | Codeforces | Educational Codeforces Round 2 | 6 | |
| 114 | Rectangle Puzzle | Codeforces | Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) | 6 | |
| 115 | Ada and Cucumber | SPOJ | 6 | ||
| 116 | Rooter's Song | Codeforces | Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) | 6 | |
| 117 | Chris and Road | Codeforces | Codeforces Round #365 (Div. 2) | 6 | |
| 118 | Fighting Against a Polygonal Monster | UVA | 6 | ||
| 119 | Tower for Cellular Telephony | UVA | 6 | ||
| 120 | Hail | Timus | 6 | ||
| 121 | Cutting a Polygon | UVA | 6 | ||
| 122 | Device | Timus | 6 | ||
| 123 | Building Bridge | Codeforces | CROC-MBTU 2012, Final Round (Online version, Div. 2) | 7 | |
| 124 | Robo-Footballer | Codeforces | Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) | 7 | |
| 125 | Paint Tree | Codeforces | Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2) | 7 | |
| 126 | Minimum Sum | Codeforces | School Regional Team Contest, Saratov, 2011 | 7 | |
| 127 | Harry Potter and the Golden Snitch | Codeforces | Codeforces Beta Round #60 | 7 | |
| 128 | Knights | Codeforces | Codeforces Beta Round #33 (Codeforces format) | 7 | |
| 129 | Sequence of points | Codeforces | Codeforces Beta Round #24 | 7 | |
| 130 | Commentator problem | Codeforces | Codeforces Beta Round #2 | 7 | |
| 131 | A Square and Equilateral Triangles | UVA | 7 | ||
| 132 | Product Sum | Codeforces | Codeforces Round #344 (Div. 2) | 7 | |
| 133 | Pyramids | Codeforces | Experimental Educational Round: VolBIT Formulas Blitz | 7 | |
| 134 | Turn | Codeforces | Experimental Educational Round: VolBIT Formulas Blitz | 7 | |
| 135 | Vika and Segments | Codeforces | Codeforces Round #337 (Div. 2) | 7 | |
| 136 | Freelancer's Dreams | Codeforces | Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) | 7 | |
| 137 | Tavas and Pashmaks | Codeforces | Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1) | 7 | |
| 138 | Hill Climbing | Codeforces | Codeforces Round #238 (Div. 1) | 7 | |
| 139 | Set of Points | Codeforces | Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) | 7 | |
| 140 | Mirror | Timus | 7 | ||
| 141 | Fireball | Timus | 7 | ||
| 142 | Special Olympics | Codeforces | Codeforces Round #125 (Div. 2) | 8 | |
| 143 | Zoo | Codeforces | Croc Champ 2012 - Final | 8 | |
| 144 | Space Rescuers | Codeforces | Codeforces Beta Round #82 (Div. 2) | 8 | |
| 145 | Igloo Skyscraper | Codeforces | Codeforces Beta Round #75 (Div. 1 Only) | 8 | |
| 146 | Guard Towers | Codeforces | Yandex.Algorithm 2011 Round 1 | 8 | |
| 147 | Professor's task | Codeforces | Codeforces Beta Round #64 | 8 | |
| 148 | Very simple problem | Codeforces | Codeforces Beta Round #51 | 8 | |
| 149 | Happy Farm 5 | Codeforces | Codeforces Beta Round #47 | 8 | |
| 150 | Triangles | Codeforces | Codeforces Beta Round #13 | 8 | |
| 151 | Letter A | Codeforces | Codeforces Beta Round #13 | 8 | |
| 152 | Two Friends | Codeforces | Codeforces Beta Round #8 | 8 | |
| 153 | Cookie | UVA | 8 | ||
| 154 | Hide and seek | UVA | 8 | ||
| 155 | Deformed Wheel | PKU | 8 | ||
| 156 | Mirror Box | Codeforces | Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) | 8 | |
| 157 | Bear and Bowling 4 | Codeforces | Educational Codeforces Round 11 | 8 | |
| 158 | Area of a Star | Codeforces | Experimental Educational Round: VolBIT Formulas Blitz | 8 | |
| 159 | Arrow | Codeforces | Experimental Educational Round: VolBIT Formulas Blitz | 8 | |
| 160 | Max and Bike | Codeforces | Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2) | 8 | |
| 161 | Bear and Floodlight | Codeforces | Codeforces Round #226 (Div. 2) | 8 | |
| 162 | Summer Earnings | Codeforces | Codeforces Round #194 (Div. 1) | 8 | |
| 163 | Sereja and Straight Lines | Codeforces | Codeforces Round #187 (Div. 1) | 8 | |
| 164 | The Child and Polygon | Codeforces | Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) | 8 | |
| 165 | Alyona and Triangles | Codeforces | Codeforces Round #358 (Div. 2) | 8 | |
| 166 | Cheese | Timus | 8 | ||
| 167 | Chapaev | Timus | 8 | ||
| 168 | Good Manners | Timus | 8 | ||
| 169 | National Park | Timus | 8 | ||
| 170 | Kill the Shaitan-Boss | Timus | 8 | ||
| 171 | Stars | Codeforces | Codeforces Round #131 (Div. 1) | 9 | |
| 172 | Delivering Carcinogen | Codeforces | Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2) | 9 | |
| 173 | Battlefield | Codeforces | Codeforces Round #117 (Div. 2) | 9 | |
| 174 | New Year Snowflake | Codeforces | Codeforces Round #100 | 9 | |
| 175 | Rotation | Codeforces | Unknown Language Round #3 | 9 | |
| 176 | Help Greg the Dwarf | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) | 9 | |
| 177 | Space mines | Codeforces | Codeforces Beta Round #74 (Div. 1 Only) | 9 | |
| 178 | Corridor | Codeforces | Yandex.Algorithm 2011 Qualification 2 | 9 | |
| 179 | Archer's Shot | Codeforces | Codeforces Beta Round #70 (Div. 2) | 9 | |
| 180 | Martian Food | Codeforces | Codeforces Beta Round #69 (Div. 1 Only) | 9 | |
| 181 | Ship's Shortest Path | Codeforces | Codeforces Beta Round #67 (Div. 2) | 9 | |
| 182 | Save the City! | Codeforces | Manthan 2011 | 9 | |
| 183 | Inquisition | Codeforces | Codeforces Beta Round #58 | 9 | |
| 184 | Cannon | Codeforces | Codeforces Beta Round #44 (Div. 2) | 9 | |
| 185 | Bowls | Codeforces | Codeforces Beta Round #36 | 9 | |
| 186 | Hide-and-Seek | Codeforces | Codeforces Beta Round #32 (Div. 2, Codeforces format) | 9 | |
| 187 | King's Problem? | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 9 | |
| 188 | Tetragon | Codeforces | Codeforces Beta Round #23 | 9 | |
| 189 | 3D Geometry | A2 Online Judge | 9 | ||
| 190 | Ruminations on Ruminants | Codeforces | Codeforces Round #334 (Div. 1) | 9 | |
| 191 | Max and Min | Codeforces | VK Cup 2015 - Finals, online mirror | 9 | |
| 192 | Randomizer | Codeforces | Codeforces Round #313 (Div. 1) | 9 | |
| 193 | Roland and Rose | Codeforces | Codeforces Round #262 (Div. 2) | 9 | |
| 194 | New Year Tree Decorations | Codeforces | Good Bye 2013 | 9 | |
| 195 | Ksusha and Square | Codeforces | Croc Champ 2013 - Round 2 | 9 | |
| 196 | The Last Hole! | Codeforces | Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) | 9 | |
| 197 | Little Elephant and Triangle | Codeforces | Codeforces Round #136 (Div. 1) | 9 | |
| 198 | Runaway to a Shadow | Codeforces | Codeforces Round #357 (Div. 2) | 9 | |
| 199 | Mouse | Timus | 9 | ||
| 200 | Intersect Until You're Sick of It | Timus | 9 | ||
| 201 | Light | Timus | 9 | ||
| 202 | Karen and Cards | Codeforces | Codeforces Round #419 (Div. 1) | 9 | |
| 203 | Goat in the Garden 4 | Timus | 9 | ||
| 204 | Wires | Timus | 9 | ||
| 205 | Triangle Game 2 | Timus | 9 | ||
| 206 | Triangle Game | Timus | 9 | ||
| 207 | Biscuits | Timus | 9 | ||
| 208 | Empire Strikes Back | Timus | 9 | ||
| 209 | The Mentaculus | Timus | 9 | ||
| 210 | Fire Signals | Timus | 9 | ||
| 211 | Non-Flying Weather | Timus | 9 | ||
| 212 | Cubes | Codeforces | Codeforces Round #150 (Div. 1) | 10 | |
| 213 | Planar Graph | Codeforces | Codeforces Round #138 (Div. 1) | 10 | |
| 214 | Spider | Codeforces | Codeforces Round #138 (Div. 1) | 10 | |
| 215 | Martian Colony | Codeforces | Codeforces Round #109 (Div. 1) | 10 | |
| 216 | Help Greg the Dwarf 2 | Codeforces | Codeforces Round #102 (Div. 1) | 10 | |
| 217 | Birthday | Codeforces | Codeforces Beta Round #94 (Div. 1 Only) | 10 | |
| 218 | Alternative Reality | Codeforces | Codeforces Beta Round #90 | 10 | |
| 219 | Darts | Codeforces | Codeforces Beta Round #83 (Div. 1 Only) | 10 | |
| 220 | Mogohu-Rea Idol | Codeforces | Codeforces Beta Round #73 (Div. 1 Only) | 10 | |
| 221 | Plane of Tanks | Codeforces | Codeforces Beta Round #66 | 10 | |
| 222 | Contact | Codeforces | Codeforces Beta Round #62 | 10 | |
| 223 | Vacuum ?leaner | Codeforces | Codeforces Beta Round #50 | 10 | |
| 224 | BerPaint | Codeforces | School Team Contest #2 (Winter Computer School 2010/11) | 10 | |
| 225 | Armistice Area Apportionment | Codeforces | CROC 2016 - Elimination Round | 10 | |
| 226 | New Year and Cake | Codeforces | Good Bye 2015 | 10 | |
| 227 | Cross Sum | Codeforces | Codeforces Round #336 (Div. 1) | 10 | |
| 228 | Cut Length | Codeforces | Educational Codeforces Round 1 | 10 | |
| 229 | BCPC | Codeforces | Codeforces Round #328 (Div. 2) | 10 | |
| 230 | Spectator Riots | Codeforces | Bubble Cup 8 - Finals [Online Mirror] | 10 | |
| 231 | Points in triangle | Codeforces | VK Cup 2015 - Wild Card Round 1 | 10 | |
| 232 | Triangles 3000 | Codeforces | Codeforces Round #296 (Div. 1) | 10 | |
| 233 | Gears | Codeforces | Codeforces Round #283 (Div. 1) | 10 | |
| 234 | Gena and Second Distance | Codeforces | Codeforces Round #253 (Div. 1) | 10 | |
| 235 | Playing the ball | Codeforces | Coder-Strike 2014 - Finals (online edition, Div. 1) | 10 | |
| 236 | Lightbulb for Minister | Codeforces | Codeforces Round #231 (Div. 2) | 10 | |
| 237 | Fox and Meteor Shower | Codeforces | Codeforces Round #228 (Div. 1) | 10 | |
| 238 | Cookie Clicker | Codeforces | Codeforces Round #222 (Div. 1) | 10 | |
| 239 | Inna and Babies | Codeforces | Codeforces Round #220 (Div. 2) | 10 | |
| 240 | Drawing Circles is Fun | Codeforces | Codeforces Round #219 (Div. 1) | 10 | |
| 241 | Looking for Owls | Codeforces | Codeforces Round #203 (Div. 2) | 10 | |
| 242 | Tennis Rackets | Codeforces | Croc Champ 2013 - Finals (online version, Div. 1) | 10 | |
| 243 | Polygon | Codeforces | Testing Round #6 | 10 | |
| 244 | Emperor's Problem | Codeforces | School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) | 10 | |
| 245 | DravDe saves the world | Codeforces | Codeforces Beta Round #28 (Codeforces format) | 10 | |
| 246 | Hongcow Draws a Circle | Codeforces | Codeforces Round #385 (Div. 1) | 10 | |
| 247 | Lada Malina | Codeforces | Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) | 10 | |
| 248 | Iron Man | Codeforces | Codeforces Round #366 (Div. 1) | 10 | |
| 249 | Mobile Life | Timus | 10 | ||
| 250 | Multishot in the Secret Cow Level | Timus | 10 | ||
| 251 | Winding Number | Timus | 10 | ||
| 252 | Interfering Segment | Timus | 10 | ||
| 253 | Goat in the Garden 6 | Timus | 10 | ||
| 254 | Boss, I Can See You! | Timus | 10 |