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Hot problems
COCI '08 Contest 4 #6 Periodni
IOI '00 P1 - Palindrome
CCO '13 P2 - Tourney
CCO '13 P4 - A Romantic Movie Outing
Educational DP Contest AtCoder G - Longest Path
IOI '01 P1 - Mobile Phones
Mock CCC '18 Contest 5 J5/S3 - Directed Graph Connectivity
Problem
Category
Points
AC %
Users
CCC '00 J1 - Calendar
CCC
5
11.2%
1380
CCC '00 J2 - 9966
CCC
3
35.7%
1980
CCC '00 S1 - Slot Machines
CCC
5
27.4%
4609
CCC '00 S2 - Babbling Brooks
CCC
7
34.4%
2599
CCC '00 S3 - Surfing
CCC
7
17.6%
628
CCC '00 S4 - Golf
CCC
7
24.5%
2323
CCC '00 S5 - Sheep and Coyotes
CCC
10p
4.2%
181
CCC '00 S5 - Sheep and Coyotes (Hard)
CCC
20
6.3%
24
CCC '01 J1 - Dressing Up
CCC
3
47.9%
2917
CCC '01 J2 - Mod Inverse
CCC
3
42.8%
2591
CCC '01 S1 - Keeping Score
CCC
5
32.7%
1516
CCC '01 S2 - Spirals
CCC
5
41.3%
922
CCC '01 S2 - Spirals (Exact Version)
CCC
7
8.3%
108
CCC '01 S3 - Strategic Bombing
CCC
7
38.7%
1470
CCC '01 S4 - Cookies
CCC
10
18.8%
426
CCC '01 S5 - Post's Correspondence Problem
CCC
10
29.0%
319
CCC '02 J1 - 0123456789
CCC
3
5.5%
737
CCC '02 J2 - AmeriCanadian
CCC
3
25.1%
3962
CCC '02 S1 - The Students' Council Breakfast
CCC
5
39.4%
1521
CCC '02 S2 - Fraction Action
CCC
5
19.0%
1900
CCC '02 S3 - Blindfold
CCC
15
6.2%
153
CCC '02 S4 - Bridge Crossing
CCC
10p
37.4%
909
CCC '02 S4 - Bridge Crossing (Hard)
CCC
20
8.6%
33
CCC '02 S5 - Follow the Bouncing Ball
CCC
10
13.9%
194
CCC '03 J1 - Trident
CCC
3
28.7%
2348
CCC '03 J2 - Picture Perfect
CCC
3p
23.7%
1627
CCC '03 S1 - Snakes and Ladders
CCC
5
20.5%
3119
CCC '03 S2 - Poetry
CCC
5
17.4%
1468
CCC '03 S3 - Floor Plan
CCC
7
27.8%
1976
CCC '03 S4 - Substrings
CCC
15p
7.8%
381
CCC '03 S5 - Trucking Troubles
CCC
10p
17.6%
690
CCC '04 J1 - Squares
CCC
3
32.6%
6171
CCC '04 J2 - Terms of Office
CCC
3
37.4%
3544
CCC '04 J3 - Smile with Similes
CCC
3
57.8%
4029
CCC '04 J4 - Simple Encryption
CCC
5
50.8%
1736
CCC '04 J5 - Fractals
CCC
10
35.8%
222
CCC '04 S1 - Fix
CCC
5
32.8%
1218
CCC '04 S2 - TopYodeller
CCC
5
21.4%
743
CCC '04 S3 - Spreadsheet
CCC
10
27.1%
619
CCC '04 S4 - Space Turtle
CCC
10p
19.9%
190
CCC '04 S5 - Super Plumber
CCC
10p
24.0%
410
CCC '05 J1 - The Cell Sell
CCC
3
8.1%
1471
CCC '05 J2 - RSA Numbers
CCC
3
40.6%
3012
CCC '05 J3 - Returning Home
CCC
5
37.2%
2382
CCC '05 J4 - Cross Spiral
CCC
7p
32.7%
584
CCC '05 J5 - Bananas
CCC
10
21.7%
1484
CCC '05 S1 - Snow Calls
CCC
5
43.4%
2290
CCC '05 S2 - Mouse Move
CCC
5
37.4%
1699
CCC '05 S3 - Quantum Operations
CCC
10p
34.9%
443
CCC '05 S4 - Pyramid Message Scheme
CCC
10
35.8%
825
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