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Hot problems
Subway Routes
CCC '11 S1 - English or French?
Baltic OI '05 P3 - Maze
CCC '00 S1 - Slot Machines
Knapsack 4
IOI '07 P4 - Miners
Educational DP Contest AtCoder A - Frog 1
Problem
Category
Points
AC %
Users ▾
CCC '19 J3 - Cold Compress
CCC
5
46.2%
3146
CCC '21 J1 - Boiling Water
CCC
3p
54.0%
3140
WC '18 Contest 3 J1 - An Honest Day's Work
Woburn Challenge
3p
57.5%
3136
CCC '03 S1 - Snakes and Ladders
CCC
5
20.5%
3104
CCC '18 J3 - Are we there yet?
CCC
3
55.8%
3091
CCC '06 J2 - Roll the Dice
CCC
3
27.1%
3031
CCC '13 J4 - Time on task
CCC
5
44.5%
3003
CCC '05 J2 - RSA Numbers
CCC
3
40.8%
2971
CCC '22 J1 - Cupcake Party
CCC
3
55.5%
2907
CCC '12 J3 - Icon Scaling
CCC
3
51.2%
2876
CCC '01 J1 - Dressing Up
CCC
3
48.2%
2866
CCC '11 J3 - Sumac Sequences
CCC
5
43.4%
2865
CCC '14 S2 - Assigning Partners
CCC
5
33.3%
2841
CCC '17 S2 - High Tide, Low Tide
CCC
5
27.9%
2835
CCC '18 S2 - Sunflowers
CCC
5p
39.6%
2803
CCC '14 S3 - The Geneva Confection
CCC
7p
26.4%
2802
DMOPC '16 Contest 1 P0 - C.C. and Cheese-kun
DMOPC
3p
37.7%
2774
CCC '21 J2 - Silent Auction
CCC
3p
51.3%
2732
16 BIT S/W ONLY
Uncategorized
3
36.8%
2683
CCC '22 J2 - Fergusonball Ratings
CCC
3
47.7%
2652
COCI '06 Contest 5 #1 Trik
COCI
3
52.8%
2564
CCC '21 S1 - Crazy Fencing
CCC
5p
47.7%
2551
CCC '16 J3 - Hidden Palindrome
CCC
5
45.8%
2547
CCC '00 S2 - Babbling Brooks
CCC
7
34.1%
2524
CCC '01 J2 - Mod Inverse
CCC
3
43.0%
2519
CCC '21 J3 - Secret Instructions
CCC
5p
36.1%
2503
CCC '10 J5 - Knight Hop
CCC
7
36.6%
2396
CCC '12 J4 - Big Bang Secrets
CCC
3
59.2%
2395
An Animal Contest 1 P1 - Alpaca Shapes
AAC
3p
40.0%
2388
COCI '16 Contest 1 #1 Tarifa
COCI
3
58.6%
2387
CCC '17 J3 - Exactly Electrical
CCC
3p
29.9%
2365
WC '17 Contest 3 J3 - Uncrackable
Woburn Challenge
5
28.9%
2361
CCC '20 J3 - Art
CCC
3p
42.9%
2356
CCC '05 J3 - Returning Home
CCC
5
37.2%
2355
Boolean
Uncategorized
3
50.4%
2348
CCC '03 J1 - Trident
CCC
3
28.6%
2321
CCC '19 S2 - Pretty Average Primes
CCC
5p
26.0%
2317
CCC '07 S1 - Federal Voting Age
CCC
3
36.2%
2316
CCC '16 S1 - Ragaman
CCC
3p
29.7%
2294
CCC '00 S4 - Golf
CCC
7
24.4%
2293
CCC '20 J4 - Cyclic Shifts
CCC
5p
45.7%
2283
CCC '07 J2 - I Speak TXTMSG
CCC
3
21.8%
2280
CCC '05 S1 - Snow Calls
CCC
5
43.3%
2272
CCC '15 J3 - Rövarspråket
CCC
5p
38.5%
2259
CCC '21 S2 - Modern Art
CCC
7p
29.0%
2248
Scroll
Seasonal
0
55.5%
2238
CCC '12 S1 - Don't pass me the ball!
CCC
3
56.4%
2232
Next Prime
Classics
5
19.9%
2177
CCC '08 S1 - It's Cold Here!
CCC
5
37.4%
2172
CCC '22 S1 - Good Fours and Good Fives
CCC
5p
39.5%
2122
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