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Problem Category Points AC % ▾ Users
Amplitude Hackathon '23 Practice Problem 1 - Gigatron EPS Modulo 998244353 Uncategorized 3p 58.2% 40
DWITE '07 R3 #1 - Yet Another Primes Question DWITE 5 58.2% 156
DWITE '07 R2 #1 - Not Quite Prime DWITE 5 58.2% 320
COCI '19 Contest 5 #5 Zapina COCI 10p 58.2% 93
BlueBook - Pop Explosion BlueBook 3 58.2% 419
COCI '16 Contest 1 #6 Vještica COCI 15p 58.1% 21
COCI '09 Contest 5 #2 Cudoviste COCI 5 58.1% 111
COCI '06 Contest 4 #3 Prsteni COCI 5 58.0% 224
CTU Open Contest 2018 - Numbers Generator ICPC 20 57.9% 3
IOI '14 Practice Task 2 - Station IOI 7p 57.9% 50
Balkan OI '11 P2 - Decrypt Balkan OI 15p 57.9% 9
DWITE '09 R6 #4 - Time for Change DWITE 7 57.9% 209
Educational DP Contest AtCoder T - Permutation Uncategorized 15 57.8% 111
CCC '04 J3 - Smile with Similes CCC 3 57.8% 3969
Educational DP Contest AtCoder O - Matching Uncategorized 12 57.8% 326
DMOPC '18 Contest 2 P1 - Pumpkin Patches DMOPC 3 57.8% 437
Summer Institute '17 Contest 1 P9 - Safe Square SIUCF 7 57.7% 139
WC '18 Contest 3 J1 - An Honest Day's Work Woburn Challenge 3p 57.6% 3154
COCI '13 Contest 6 #3 Kockice COCI 7p 57.6% 12
NOI '98 P1 - Personal Income Tax China NOI 7 57.5% 20
There's a Hole in the Bucket Uncategorized 7 57.4% 131
VM7WC '16 #5 Bronze - Jayden Watches Videos VM7WC 3 57.4% 226
WC '18 Contest 2 S1 - Laser Grid Woburn Challenge 7p 57.3% 113
COCI '08 Contest 3 #1 Pet COCI 5 57.3% 632
WC '18 Contest 1 J1 - Homework Woburn Challenge 3p 57.3% 252
DWITE '09 R5 #2 - Round to Second Prime DWITE 5 57.2% 250
Max's Anger Contest Series 2 P1 - Directed Anger Seasonal 3 57.2% 179
DWITE '07 R4 #5 - It all adds up DWITE 7 57.1% 12
Google Code Jam '22 Qualification Round Problem E - Twisty Little Passages Google Code Jam 20p 57.1% 3
Google Code Jam '11 Qualification Round Problem A - Bot Trust Google Code Jam 5 57.1% 3
Google Code Jam '11 Qualification Round Problem B - Candy Splitting Google Code Jam 7p 57.1% 4
Google Code Jam '14 Qualification Round Problem B - Cookie Clicker Alpha Google Code Jam 5p 57.1% 3
Waterloo 2003 Spring B - Persistent Numbers Waterloo Local 5 57.1% 4
DMOPC '15 Contest 2 P2 - Admin War DMOPC 3p 57.1% 485
COCI '22 Contest 4 #1 7Krokods COCI 5p 57.1% 102
BSSPC '21 J3 - Magic Paint Gun Cartridges Uncategorized 5 57.1% 148
COCI '09 Contest 3 #1 Filip COCI 3 57.0% 394
DWITE '09 R1 #2 - Word Scrambler DWITE 5 57.0% 223
Hailstone Numbers Uncategorized 3 56.9% 806
GFSSOC '15 Fall J3 - Equation Solver GFSSOC 5p 56.9% 385
CPC '19 Contest 1 P0 - Shoes Uncategorized 3p 56.9% 263
Lyndon's Golf Contest 1 P3 - Boolean (Buffed) Uncategorized 0p 56.8% 83
HCI '16 - Poké Problem Uncategorized 7 56.8% 17
WOSS Dual Olympiad 2022 J1: Holiday Gifting Seasonal 3 56.7% 245
DWITE '08 R5 #1 - Baby Diff DWITE 3 56.7% 148
German Nouns Uncategorized 5 56.6% 432
BlueBook - Payment BlueBook 3 56.6% 421
COCI '06 Contest 3 #3 Trojke COCI 7 56.6% 142
Another Contest 4 Problem 10 - Two Rectangles ACC 0 56.5% 137
IOI '94 P1 - The Triangle IOI 7p 56.5% 1475