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Random
Hot problems
CCC '24 S2 - Heavy-Light Composition
SAC '22 Code Challenge 5 P2 - Querying Extensions
Max's Anger Contest Series 2 P2 - Password Anger
CCC '12 S2 - Aromatic Numbers
The Cosmic Era P2 - Uneven Sand
CCC '20 J4 - Cyclic Shifts
CCC '13 J4 - Time on task
Problem ▾
Category
Points
AC %
Users
IOI '20 P3 - Carnival Tickets
IOI
20p
11.8%
37
IOI '20 P2 - Connecting Supertrees
IOI
15p
13.8%
54
IOI '20 P1 - Comparing Plants
IOI
40p
6.4%
17
IOI '19 P6 - Sky Walking
IOI
40p
9.6%
12
IOI '19 P5 - Vision Program
IOI
20p
8.2%
33
IOI '19 P4 - Broken Line
IOI
35p
2.3%
4
IOI '19 P3 - Rectangles
IOI
30p
6.9%
25
IOI '19 P2 - Split the Attractions
IOI
40p
5.1%
26
IOI '19 P1 - Arranging Shoes
IOI
15p
16.4%
136
IOI '18 P6 - Meetings
IOI
35p
12.0%
10
IOI '18 P5 - Highway Tolls
IOI
30p
11.7%
14
IOI '18 P4 - Mechanical Doll
IOI
20p
22.6%
13
IOI '18 P3 - Werewolf
IOI
30p
24.1%
57
IOI '18 P2 - Seats
IOI
40p
25.0%
7
IOI '18 P1 - Combo
IOI
15p
15.0%
179
IOI '17 P6 - Ancient Books
IOI
25p
11.4%
29
IOI '17 P5 - Simurgh
IOI
40p
12.1%
16
IOI '17 P4 - The Big Prize
IOI
20p
10.5%
57
IOI '17 P3 - Toy Train
IOI
30p
17.3%
40
IOI '17 P2 - Wiring
IOI
25p
15.5%
56
IOI '17 P1 - Nowruz
IOI
20p
0.0%
0
IOI '16 P6 - Aliens (Standard I/O)
IOI
30p
6.1%
63
IOI '16 P6 - Aliens
IOI
30p
7.1%
81
IOI '16 P5 - Unscrambling a Messy Bug
IOI
20p
17.7%
65
IOI '16 P4 - Paint by Numbers (Standard I/O)
IOI
15p
10.0%
63
IOI '16 P4 - Paint by Numbers
IOI
15p
12.4%
54
IOI '16 P3 - Shortcut (Standard I/O)
IOI
40p
1.8%
7
IOI '16 P3 - Shortcut
IOI
40p
9.0%
15
IOI '16 P2 - Roller Coaster Railroad (Standard I/O)
IOI
35p
12.5%
25
IOI '16 P2 - Roller Coaster Railroad
IOI
35p
45.1%
35
IOI '16 P1 - Detecting Molecules (Standard I/O)
IOI
12p
14.1%
230
IOI '16 P1 - Detecting Molecules
IOI
12p
11.8%
155
IOI '15 P6 - Towns
IOI
40p
15.5%
59
IOI '15 P5 - Sorting (Standard I/O)
IOI
25p
18.6%
186
IOI '15 P5 - Sorting
IOI
25p
21.8%
71
IOI '15 P4 - Horses (Standard I/O)
IOI
15p
7.6%
162
IOI '15 P4 - Horses
IOI
15p
11.4%
102
IOI '15 P3 - Teams (Standard I/O)
IOI
35p
3.4%
37
IOI '15 P3 - Teams
IOI
35p
8.8%
34
IOI '15 P2 - Scales
IOI
25p
6.8%
23
IOI '15 P1 - Boxes with Souvenirs (Standard I/O)
IOI
15p
8.2%
189
IOI '15 P1 - Boxes with Souvenirs
IOI
15p
13.4%
98
IOI '14 Practice Task 3 - Tile
IOI
10p
28.0%
55
IOI '14 Practice Task 2 - Station
IOI
7p
57.9%
50
IOI '14 Practice Task 1 - Square
IOI
10p
44.3%
179
IOI '14 P6 - Holiday (Standard I/O)
IOI
30
12.1%
133
IOI '14 P6 - Holiday
IOI
30
15.9%
82
IOI '14 P5 - Friend (Standard I/O)
IOI
30p
18.2%
189
IOI '14 P5 - Friend
IOI
30p
26.2%
99
IOI '14 P4 - Gondola (Standard I/O)
IOI
15
8.5%
222
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