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