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Hot problems
CCC '24 J3 - Bronze Count
CCC '19 S2 - Pretty Average Primes
Problem ▾
Category
Points
AC %
Users
NOI '98 P3 - Software Installation Disk
China NOI
15p
43.8%
3
NOI '98 P2 - Free Pizza
China NOI
15p
17.7%
12
NOI '98 P1 - Personal Income Tax
China NOI
7
57.5%
20
NOI '97 P6 - Satellite Coverage
China NOI
12p
39.5%
27
NOI '97 P5 - Building Game
China NOI
15p
27.1%
23
NOI '97 P4 - Perfect Tour
China NOI
5
32.2%
136
NOI '97 P3 - File Matching
China NOI
25p
0.0%
0
NOI '97 P2 - Optimal Routing
China NOI
7p
28.5%
59
NOI '97 P1 - Competition Ranking
China NOI
7
32.3%
38
NOI '23 P6 - Merge the Books
China NOI
30p
16.7%
3
NOI '23 P5 - String
China NOI
25p
18.9%
7
NOI '23 P4 - Trade
China NOI
20p
46.7%
7
NOI '23 P3 - Depth First Search
China NOI
35p
37.5%
2
NOI '23 P2 - Osmanthus Tree
China NOI
25p
26.3%
5
NOI '23 P1 - Square Coloring
China NOI
17p
52.6%
10
NOI '22 P6 - Quadratic Integer Program
China NOI
40p
0.0%
0
NOI '22 P5 - Bubble Sort
China NOI
35p
2.4%
1
NOI '22 P4 - Challenge NPC
China NOI
25p
30.6%
4
NOI '22 P3 - Count
China NOI
40p
0.0%
0
NOI '22 P2 - Stone
China NOI
30p
25.0%
2
NOI '22 P1 - Major
China NOI
25p
5.6%
12
NOI '22 Multi-Provincial Team Selection P6 - MIS
China NOI
40p
8.3%
2
NOI '22 Multi-Provincial Team Selection P5 - Bracket
China NOI
35p
6.8%
6
NOI '22 Multi-Provincial Team Selection P4 - Card
China NOI
25p
12.9%
5
NOI '22 Multi-Provincial Team Selection P3 - Community
China NOI
40p
2.9%
1
NOI '22 Multi-Provincial Team Selection P2 - Tree
China NOI
25p
10.5%
5
NOI '22 Multi-Provincial Team Selection P1 - Preprocessor
China NOI
10p
8.2%
12
NOI '21 P6 - Robot Game
China NOI
25p
22.4%
4
NOI '21 P5 - The Locked Box
China NOI
25p
11.8%
9
NOI '21 P4 - Quantum Communication
China NOI
25p
9.4%
22
NOI '21 P3 - Celebration
China NOI
25p
9.6%
21
NOI '21 P2 - Intersecting Paths
China NOI
25p
22.9%
17
NOI '21 P1 - Light Heavy Edges
China NOI
25p
8.7%
25
NOI '20 P6 - Road
China NOI
45p
3.3%
1
NOI '20 P5 - Surreal
China NOI
17p
10.2%
17
NOI '20 P4 - Dish
China NOI
20p
7.6%
19
NOI '20 P3 - Tears
China NOI
40p
9.0%
8
NOI '20 P2 - Destiny
China NOI
25p
16.4%
12
NOI '20 P1 - Delicacy
China NOI
25p
12.6%
30
NOI '19 P6 - Explore
China NOI
25p
2.6%
10
NOI '19 P5 - Landlords
China NOI
25p
22.6%
16
NOI '19 P4 - Jump
China NOI
25p
13.0%
41
NOI '19 P3 - Sequence
China NOI
25p
8.5%
12
NOI '19 P2 - Robot
China NOI
25p
6.9%
7
NOI '19 P1 - Route
China NOI
25p
12.1%
51
NOI '17 P6 - Magic
China NOI
40p
40.0%
2
NOI '17 P5 - Vegetables
China NOI
25p
66.7%
4
NOI '17 P4 - Game
China NOI
25p
16.7%
1
NOI '17 P3 - Pool
China NOI
30p
38.9%
3
NOI '17 P2 - Queue
China NOI
20p
45.3%
9
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