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Random
Hot problems
Educational DP Contest AtCoder L - Deque
CCC '04 S4 - Space Turtle
COCI '14 Contest 6 #4 Kratki
A Game
Educational DP Contest AtCoder H - Grid 1
Wesley's Anger Contest 1 Problem 5 - Rule of Four
CCOQR '16 - Stupendous Bowties
Problem
Category
Points
AC %
Users ▴
Waterloo 2017 Fall A - Art
Waterloo Local
3p
47.2%
107
Deemo's Problem
Uncategorized
15
13.6%
107
Mock CCC '14 J3 - Clock Hands
Mock CCC
5
17.2%
107
Baltic OI '17 P6 - Cat in a tree
Baltic OI
15p
35.0%
107
CPC '21 Contest 1 P3 - AQT and Circles
Uncategorized
10p
13.6%
107
An Animal Contest 6 P3 - OAC
AAC
12p
13.4%
107
HHPC1 P4 - Yet Another A+B Problem
Uncategorized
10p
12.0%
107
COCI '14 Contest 4 #2 Pšenica
COCI
7p
16.3%
108
CCO '11 P1 - Putnam
CCO
7
27.6%
108
TLE '16 Contest 5 P1 - English Proficiency Exam
TLE
3p
24.0%
108
Jason's Theorem
Uncategorized
10p
20.0%
108
DMOPC '19 Contest 7 P4 - Bob and Continued Fractions
DMOPC
20p
20.9%
108
Battleships
Uncategorized
10p
11.3%
108
An Animal Contest 1 P6 - Alpaca Distancing
AAC
12p
20.1%
108
BSSPC '22 P6 - Permutations & Primogems
Uncategorized
10p
16.8%
108
New Year's '15 P2 - Food Selection
Seasonal
5p
36.2%
109
HCI '16 - Sentence Checker
Uncategorized
3p
22.7%
109
COCI '09 Contest 3 #4 Razgovori
COCI
10p
48.7%
109
COCI '09 Contest 3 #5 Patuljci
COCI
17p
21.9%
109
ECOO '21 P4 - Chris' Candy
ECOO
7p
23.7%
109
Age Demographic
Uncategorized
5
19.9%
109
COCI '14 Contest 1 #4 Mafija
COCI
15p
19.1%
110
DMOPC '14 Exam Time P3 - Chemistry Homework
DMOPC
10p
24.4%
110
UTS Open '15 #3 - Pogo
Uncategorized
25p
24.6%
110
Intervals
Uncategorized
10p
20.5%
110
Another Contest 6 Problem 14 - Boolean (Easy)
ACC
0p
17.9%
110
NOIP '21 P1 - Saying Numbers
China NOI
10p
32.2%
110
DMOPC '15 Contest 5 P3 - All Your Base
DMOPC
7p
31.4%
111
Hungry
Uncategorized
5p
43.7%
111
DWITE '10 R5 #5 - Cube World
DWITE
12
26.3%
111
Back To School '18: An FFT Problem
Seasonal
10p
25.9%
111
GlobeX Cup '18 S2 - Test Scores
Uncategorized
7p
20.0%
111
Expensive Chair Stacking
Uncategorized
7p
36.1%
111
Educational DP Contest AtCoder T - Permutation
Uncategorized
15
57.8%
111
COCI '09 Contest 2 #3 Kutevi
COCI
7
49.6%
111
COCI '09 Contest 5 #2 Cudoviste
COCI
5
58.1%
111
IOI '08 P2 - Islands
IOI
25p
10.4%
111
DWITE '02 R2 #2 - The Five M's of Stats 101
DWITE
5
31.1%
111
IOI '12 P2 - Parachute Rings (Standard I/O)
IOI
25p
11.5%
111
DMOPC '21 Contest 1 P3 - Mystery DAG
DMOPC
12
14.8%
111
DMPG '15 G1 - Marcia and Maze
DMOPC
10p
26.8%
112
ICPC ECNA 2016 D - Lost in Translation
ICPC
10
28.1%
112
TLE '17 Contest 1 P1 - String Rounding
TLE
3p
27.3%
112
DWITE '11 R1 #2 - Penny Game
DWITE
5
24.3%
112
Emoji Search
Uncategorized
5
47.7%
112
IOI '96 P5 - Longest Prefix
IOI
12
20.8%
112
Diagnostic Test '16 Level 2 P3 - Remove Cancer
Uncategorized
3
51.0%
112
Mock DWITE '09 P2 - The Missing Link...
Uncategorized
7
16.6%
112
Canada Day Contest 2021 - Starfall
Seasonal
15
32.4%
112
A Subarray Problem
Uncategorized
7
39.9%
112
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