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Hot problems
Educational DP Contest AtCoder C - Vacation
CCCHK '15 J3 - Queens can't attack me!
COCI '14 Contest 5 #3 Traktor
IOI '04 P4 - Phidias
DMOPC '18 Contest 1 P2 - Sorting
CCC '10 J2 - Up and Down
CCC '24 J5 - Harvest Waterloo
Problem
Category ▴
Points
AC %
Users
SAC '22 Code Challenge 3 P3 - Bob Sort
SAC Coding Challenge
5p
25.0%
144
SAC '22 Code Challenge 3 P2 - Unicycle License
SAC Coding Challenge
5
41.5%
269
SAC '22 Code Challenge 3 P1 - Hair Hazards
SAC Coding Challenge
3
74.7%
512
SAC '22 Code Challenge 4 P1 - Obligatory Car Problem
SAC Coding Challenge
3
36.0%
210
SAC '22 Code Challenge 4 P2 - Obligatory String Problem
SAC Coding Challenge
5
34.8%
143
SAC '22 Code Challenge 4 P5 - Obligatory Interactive Problem
SAC Coding Challenge
12p
15.1%
55
SAC '22 Code Challenge 4 P4 - Obligatory Subarray Problem
SAC Coding Challenge
10p
22.6%
91
SAC '22 Code Challenge 4 P3 - Obligatory Math Problem
SAC Coding Challenge
5
38.5%
205
SAC '22 Code Challenge 5 P4 - Querying Intervals
SAC Coding Challenge
10p
35.9%
118
SAC '22 Code Challenge 5 P5 - Querying Rectangles
SAC Coding Challenge
15p
15.7%
36
SAC '22 Code Challenge 5 P3 - Querying Presents
SAC Coding Challenge
7p
51.0%
105
SAC '22 Code Challenge 5 P2 - Querying Extensions
SAC Coding Challenge
5p
73.5%
281
SAC '22 Code Challenge 5 P1 - Querying Plants
SAC Coding Challenge
3
65.4%
226
SAC '22 Code Challenge 3 Junior P1 - Normal Problem
SAC Coding Challenge
3p
66.2%
330
SAC '22 Code Challenge 3 Junior P2 - Normal Lines
SAC Coding Challenge
3p
67.5%
282
SAC '22 Code Challenge 3 Junior P3 - Normal Probabilities
SAC Coding Challenge
3p
68.7%
249
SAC '22 Code Challenge 3 Junior P4 - Normal Conversions
SAC Coding Challenge
5p
28.1%
173
SAC '22 Code Challenge 3 Junior P5 - Normal Encoding
SAC Coding Challenge
10p
17.8%
33
SAC '22 Code Challenge 4 Junior P1 - Obligatory DeMello Problem
SAC Coding Challenge
3
62.9%
253
SAC '22 Code Challenge 4 Junior P2 - Obligatory Geometry Problem
SAC Coding Challenge
3p
51.6%
209
SAC '22 Code Challenge 4 Junior P3 - Obligatory Triangle Problem
SAC Coding Challenge
5p
26.6%
171
SAC '22 Code Challenge 4 Junior P4 - Obligatory Permutation Problem
SAC Coding Challenge
7p
18.4%
83
SAC '22 Code Challenge 4 Junior P5 - Obligatory Output Only Problem
SAC Coding Challenge
10
24.9%
38
SAC '22 Code Challenge 5 Junior P1 - Monkey, Type!
SAC Coding Challenge
3
68.3%
252
SAC '22 Code Challenge 5 Junior P5 - English Summative
SAC Coding Challenge
10p
26.5%
79
SAC '22 Code Challenge 5 Junior P2 - Badminton Scoring
SAC Coding Challenge
3
72.7%
287
SAC '22 Code Challenge 5 Junior P4 - Course Requirements
SAC Coding Challenge
7p
52.8%
239
SAC '22 Code Challenge 5 Junior P3 - Media List
SAC Coding Challenge
5p
38.8%
283
Halloween '14 P1 - Rabbit Girls
Seasonal
3p
21.3%
534
Halloween '14 P2 - Cat Girls
Seasonal
12p
27.7%
204
Halloween '14 P3 - Dog Girls
Seasonal
15p
12.3%
76
Halloween '14 P4 - Fox Girls
Seasonal
20p
7.0%
54
Tree Cutting
Seasonal
12p
35.0%
141
Mine and Tree
Seasonal
30p
22.7%
59
Is it a Tree?
Seasonal
7p
33.0%
725
New Year's '15 P6 - Tiles
Seasonal
20p
23.8%
26
New Year's '15 P4 - Leftover Eggnog
Seasonal
15p
32.2%
128
New Year's '15 P5 - Message to Mars
Seasonal
20p
14.4%
52
New Year's '15 P1 - Invitation Devastation
Seasonal
3
42.8%
354
New Year's '15 P2 - Food Selection
Seasonal
5p
36.2%
109
New Year's '15 P3 - Gift Wrap
Seasonal
5
61.5%
152
Valentine's Day '15 P1 - #1 BABE
Seasonal
15p
3.6%
2
Valentine's Day '15 P2 - Simon and Marcy
Seasonal
7p
53.9%
664
Valentine's Day '15 P3 - The Great Escape
Seasonal
10p
24.2%
36
Sword Art Online Judge
Seasonal
7
14.0%
101
Death Gun
Seasonal
7p
23.8%
293
Scroll
Seasonal
0
55.5%
2238
Sword Art Online Judge 2
Seasonal
10
6.1%
62
Sword Art Online Judge 3
Seasonal
7
13.1%
33
MNYC '16: King Modulus
Seasonal
3p
31.4%
254
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