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Hot problems
DMOPC '19 Contest 2 P3 - Selection
COCI '21 Contest 5 #4 Radio
Longest Increasing Subsequence
APIO '15 P3 - Palembang Bridges
CCC '26 S2 - Beams of Light
COCI '07 Regional #2 Nikola
Amplitude Hackathon '23 Practice Problem 2 - Go Amplitude!
Problem
Category
Points
AC %
Users
DWITE '12 R1 #4 - Trick or Tree'ing
DWITE
5
26.2%
385
DWITE '12 R1 #5 - Haunted House
DWITE
10
25.9%
12
DWITE '12 R2 #1 - Sugar Rush
DWITE
3
30.6%
117
DWITE '12 R2 #2 - Word Arithmetic
DWITE
5
33.0%
26
DWITE '12 R2 #3 - Bitstrings
DWITE
3
37.8%
151
DWITE '12 R2 #4 - Magic Trick
DWITE
7
42.0%
218
DWITE '12 R2 #5 - Car Hoppers
DWITE
7
28.7%
47
DWITE '12 R5 #1 - Travel Time
DWITE
5
46.3%
37
DWITE '12 R5 #2 - Copycat SMS
DWITE
5
30.6%
141
DWITE '12 R5 #3 - Triangle Count
DWITE
7
32.8%
183
DWITE '12 R5 #4 - Fencing Problems
DWITE
5
21.4%
17
DWITE '12 R5 #5 - Pattern Lock
DWITE
7
38.8%
31
Dynamic Sum
Uncategorized
15
13.9%
17
ICPC ECNA 2000 A - Picnic Planning
ICPC
15
6.3%
5
ICPC ECNA 2000 B - Poly-polygonal Numbers
ICPC
12
14.7%
5
ICPC ECNA 2000 C - Rational Approximation
ICPC
17
28.6%
2
ICPC ECNA 2000 D - Stacking Cubes
ICPC
7
8.1%
5
ICPC ECNA 2000 E - Checker's Check
ICPC
15
13.3%
5
ICPC ECNA 2000 F - To Bet or Not To Bet
ICPC
10
31.6%
5
ICPC ECNA 2005 A - ACM (ACronym Maker)
ICPC
12
22.0%
31
ICPC ECNA 2005 B - Countdown
ICPC
10
22.6%
192
ICPC ECNA 2005 C - The Game of Efil
ICPC
12
50.0%
17
ICPC ECNA 2005 D - Queens, Knights and Pawns
ICPC
7
41.8%
48
ICPC ECNA 2005 E - Reliable Nets
ICPC
15
21.2%
46
ICPC ECNA 2005 F - Square Count
ICPC
15
36.1%
22
ICPC ECNA 2005 G - Swamp Things
ICPC
7
21.7%
18
ICPC ECNA 2005 H - Two Ends
ICPC
10
32.9%
170
ICPC ECNA 2016 A - Bubbly Troubly
ICPC
20
33.3%
3
ICPC ECNA 2016 B - Foosball Dynasty
ICPC
10
21.2%
15
ICPC ECNA 2016 C - The Key to Cryptography
ICPC
7
55.0%
76
ICPC ECNA 2016 D - Lost in Translation
ICPC
10
29.6%
148
ICPC ECNA 2016 E - Red Rover
ICPC
7
50.5%
30
ICPC ECNA 2016 F - Removal Game
ICPC
20
36.9%
27
ICPC ECNA 2016 G - That's One Hanoi-ed Teacher
ICPC
15
47.9%
18
ICPC ECNA 2016 H - Vin Diagrams
ICPC
15
48.2%
17
ICPC ECNA 2016 I - Waif Until Dark
ICPC
15
35.9%
33
ICPC ECNA 2016 J - Yes, Yes, It's Nonograms
ICPC
20
55.0%
6
ICPC ECNA 2019 C - Cheese, If You Please
ICPC
25
42.9%
6
ECOO '07 R3 P1 - Sum of Primes
ECOO
7
23.0%
218
ECOO '07 R3 P4 - Reverse Polish Logic
ECOO
7p
12.3%
10
ECOO '12 R1 P1 - Sluggers
ECOO
5p
21.8%
72
ECOO '12 R1 P2 - Decoding DNA
ECOO
5p
19.9%
402
ECOO '12 R1 P3 - Triangles
ECOO
5p
24.7%
33
ECOO '12 R1 P4 - Boggled
ECOO
7p
20.1%
81
ECOO '12 R2 P1 - Prime Time
ECOO
5p
47.6%
80
ECOO '12 R2 P2 - Password Strength
ECOO
5p
14.5%
23
ECOO '12 R2 P3 - Airport Radar
ECOO
10p
13.8%
22
ECOO '12 R2 P4 - Lo Shudoku
ECOO
10p
57.7%
8
ECOO '12 R3 P1 - The Word Garden
ECOO
5p
51.6%
12
ECOO '12 R3 P2 - Jewelry Tips
ECOO
12p
26.2%
8
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