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Hot problems
CCC '21 J3 - Secret Instructions
CCC '24 S2 - Heavy-Light Composition
DMOPC '20 Contest 4 P1 - Missing Numbers
COCI '06 Regional #3 Firefly
CCC '17 J4 - Favourite Times
ACSL '09 Practice P4 - Rank
ECOO '19 R1 P1 - Free Shirts
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 P4 - Finding Friends
SAC Coding Challenge
15p
23.8%
64
SAC '22 Code Challenge 3 P5 - Chat Corrections
SAC Coding Challenge
12p
15.8%
42
SAC '22 Code Challenge 4 Junior P1 - Obligatory DeMello Problem
SAC Coding Challenge
3
62.9%
255
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%
93
SAC '22 Code Challenge 4 Junior P5 - Obligatory Output Only Problem
SAC Coding Challenge
10
24.9%
38
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 P3 - Obligatory Math Problem
SAC Coding Challenge
5
38.5%
205
SAC '22 Code Challenge 4 P4 - Obligatory Subarray Problem
SAC Coding Challenge
10p
22.6%
91
SAC '22 Code Challenge 4 P5 - Obligatory Interactive Problem
SAC Coding Challenge
12p
15.1%
55
SAC '22 Code Challenge 5 Junior P1 - Monkey, Type!
SAC Coding Challenge
3
68.3%
252
SAC '22 Code Challenge 5 Junior P2 - Badminton Scoring
SAC Coding Challenge
3
72.8%
289
SAC '22 Code Challenge 5 Junior P3 - Media List
SAC Coding Challenge
5p
38.8%
286
SAC '22 Code Challenge 5 Junior P4 - Course Requirements
SAC Coding Challenge
7p
52.8%
239
SAC '22 Code Challenge 5 Junior P5 - English Summative
SAC Coding Challenge
10p
26.5%
79
SAC '22 Code Challenge 5 P1 - Querying Plants
SAC Coding Challenge
3
65.6%
227
SAC '22 Code Challenge 5 P2 - Querying Extensions
SAC Coding Challenge
5p
73.5%
281
SAC '22 Code Challenge 5 P3 - Querying Presents
SAC Coding Challenge
7p
51.0%
105
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
Sales
Uncategorized
20p
18.4%
64
Salsifa Hall
Uncategorized
7
51.6%
9
Sandwich
Uncategorized
5
33.7%
202
Scansion
Uncategorized
10
24.5%
72
Scroll
Seasonal
0
55.6%
2242
Secret Room
Uncategorized
25p
8.4%
26
Secret Santa
Uncategorized
15
13.0%
20
Security Cameras
Uncategorized
20
30.8%
43
Segment Tree Practice 1
Uncategorized
12
33.7%
50
Segment Tree Practice 2
Uncategorized
12
38.8%
31
Segment Tree Practice 3
Uncategorized
15
48.2%
34
Segment Tree Practice 4
Uncategorized
17
45.1%
20
Segment Tree Test
Data Structure Tests
15p
15.6%
342
Self-deception
Uncategorized
15
21.6%
264
SGS Programming Challenge P1 - XOR in Computer Class
Uncategorized
7p
13.3%
156
SGS Programming Challenge P2 - Vending Machine in Lunch
Uncategorized
10p
12.2%
54
SGS Programming Challenge P3 - Tree in Biology Class
Uncategorized
15p
16.5%
39
SGS Programming Challenge P4 - Toy in Psychology Class
Uncategorized
17p
8.0%
14
SGS Programming Challenge P5 - Tree After School
Uncategorized
20p
9.0%
7
Single Source Shortest Path
Classics
7
41.6%
1138
Singularity Cup P1 - Maximum Permutation Product
Uncategorized
5p
15.7%
285
Singularity Cup P2 - Reverse Substring Partitioning
Uncategorized
10
20.8%
234
Singularity Cup P3 - Interplanetary Travel
Uncategorized
15p
9.4%
98
Singularity Cup P4 - Staircase Sum
Uncategorized
17p
13.3%
65
Singularity Cup P5 - Perfect Matrix
Uncategorized
20
21.7%
48
Singularity Cup P6 - Explosive Breakout
Uncategorized
30p
19.7%
15
Skyscrapers
Uncategorized
15p
18.3%
60
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