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Hot problems
Educational DP Contest AtCoder I - Coins
Educational DP Contest AtCoder K - Stones
CCC '12 S3 - Absolutely Acidic
DMOPC '20 Contest 4 P1 - Missing Numbers
CCC '21 J3 - Secret Instructions
DWITE '07 R3 #4 - The Convex Fence Company
Wesley's Anger Contest Reject 5 - Two Permutations
Problem
Category ▴
Points
AC %
Users
CCC '02 J1 - 0123456789
CCC
3
5.4%
722
CCC '02 J2 - AmeriCanadian
CCC
3
25.0%
3873
CCC '02 S1 - The Students' Council Breakfast
CCC
5
39.5%
1495
CCC '02 S2 - Fraction Action
CCC
5
19.0%
1881
CCC '07 S2 - Boxes
CCC
5
27.5%
1210
CCC '07 S3 - Friends
CCC
7
37.5%
1698
CCC '07 S4 - Waterpark
CCC
7
30.9%
1499
CCC '15 S1 - Zero That Out
CCC
3
51.0%
3876
CCC '15 S2 - Jerseys
CCC
5p
26.7%
1956
CCC '15 S3 - Gates
CCC
10p
18.7%
1776
CCC '15 S4 - Convex Hull
CCC
15p
27.4%
1159
CCC '15 S5 - Greedy For Pies
CCC
17p
23.4%
553
CCC '15 J1 - Special Day
CCC
3
36.8%
8361
CCC '15 J2 - Happy or Sad
CCC
3
37.1%
7052
CCC '15 J3 - Rövarspråket
CCC
5p
38.5%
2264
CCC '15 J4 - Wait Time
CCC
5
39.4%
1311
CCC '15 J5 - π-day
CCC
10p
27.4%
1463
CCC '01 J1 - Dressing Up
CCC
3
48.2%
2871
CCC '01 J2 - Mod Inverse
CCC
3
42.9%
2526
CCC '16 S1 - Ragaman
CCC
3p
29.7%
2298
CCC '16 S2 - Tandem Bicycle
CCC
5p
53.2%
3498
CCC '16 S4 - Combining Riceballs
CCC
15p
28.8%
933
CCC '16 S3 - Phonomenal Reviews
CCC
12p
26.4%
1104
CCC '16 S5 - Circle of Life
CCC
20p
22.6%
577
CCC '16 J1 - Tournament Selection
CCC
3
41.2%
4705
CCC '16 J2 - Magic Squares
CCC
3
34.7%
3242
CCC '16 J3 - Hidden Palindrome
CCC
5
45.9%
2551
CCC '16 J4 - Arrival Time
CCC
5
29.0%
1680
CCOQR '16 - Stupendous Bowties
CCC
10p
31.8%
247
CCOQR '16 - Through A Maze Darkly
CCC
20p
18.4%
104
CCOQR '16 - Data Structure
CCC
15p
22.1%
177
CCCHK '15 J1 - Rock-paper-scissors
CCC
3
51.8%
852
CCCHK '15 J2 - What is the minimum area?
CCC
5
35.6%
266
CCCHK '15 J3 - Queens can't attack me!
CCC
5
50.6%
612
CCCHK '15 J4 - Where to build my house?
CCC
5
17.5%
247
CCCHK '15 J5 - No friends in the same group.
CCC
15p
9.8%
33
CCC '05 S3 - Quantum Operations
CCC
10p
34.8%
439
CCC '05 S4 - Pyramid Message Scheme
CCC
10
35.7%
817
CCC '01 S4 - Cookies
CCC
10
19.2%
417
CCC '05 J4 - Cross Spiral
CCC
7p
32.6%
577
CCC '01 S5 - Post's Correspondence Problem
CCC
10
28.9%
315
CCC '96 S2 - Divisibility by 11
CCC
7
6.8%
179
CCC '96 S5 - Maximum Distance
CCC
7
25.4%
417
CCC '96 S3 - Pattern Generator
CCC
5
10.9%
351
CCC '98 S2 - Cross Number Puzzle
CCC
5
43.1%
495
CCC '01 S3 - Strategic Bombing
CCC
7
38.7%
1456
CCC '01 S1 - Keeping Score
CCC
5
32.7%
1502
CCC '01 S2 - Spirals
CCC
5
41.2%
912
CCC '02 S3 - Blindfold
CCC
15
6.1%
150
CCC '02 S4 - Bridge Crossing
CCC
10p
37.2%
884
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