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