Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▾ Users
CCO '96 P2 - SafeBreaker CCO 10 36.2% 89
CCO '96 P3 - Quadtrees CCO 15 48.7% 85
CCO '96 P4 - Where's Waldorf? CCO 7 47.2% 81
CCO '96 P5 - All Roads Lead Where? CCO 7 62.6% 271
CCO '96 P6 - Hoppers CCO 15 15.5% 29
CERC '00 H - Hotline ICPC 25 15.1% 43
CCC '19 S4 - Tourism CCC 20p 7.7% 249
CCC '19 J1 - Winning Score CCC 3 50.8% 7017
CCC '19 J2 - Time to Decompress CCC 3 52.4% 3328
CCC '19 J3 - Cold Compress CCC 5 46.2% 3161
CCC '19 J5 - Rule of Three CCC 20p 0.7% 7
Count The Triplets Uncategorized 7 10.5% 170
DS '19 Day 1 P1 - Arithmetic Square Seasonal 20p 5.4% 1
DS '19 Day 2 P3 Inaho C Seasonal 35p 13.9% 6
COCI '18 Contest 1 #2 Zamjena COCI 7p 23.3% 41
A Combining Problem Uncategorized 20 14.8% 19
All Pairs Shortest Path Classics 20p 8.7% 6
Not an Aho-Corasick Problem Uncategorized 20 10.0% 11
Another Sorting Uncategorized 5p 36.1% 430
Palindromic Integer Partition Uncategorized 5p 34.1% 300
The Return of A Plus B Seasonal 0p 14.2% 341
Fast Bit Duplication Uncategorized 10 32.3% 48
Rat In A Maze Uncategorized 5 34.8% 161
When GCD meets XOR Uncategorized 17 20.1% 20
CCO '98 P1 - Fibonacci Numbers CCO 7 26.2% 158
APIO '11 P2 - Find the Path APIO 20p 25.3% 44
COCI '18 Contest 1 #3 Cipele COCI 10p 28.0% 171
COCI '18 Contest 1 #4 Strah COCI 15p 58.3% 54
COCI '18 Contest 1 #5 Teoretičar COCI 35p 31.7% 10
APIO '07 P2 - Backup APIO 25p 16.0% 69
Another Contest 4 Problem 0 - The April Fools Warmup Problem ACC 0 27.8% 466
COCI '18 Contest 2 #1 Preokret COCI 5p 31.2% 500
COCI '18 Contest 2 #2 Kocka COCI 7p 33.3% 23
COCI '18 Contest 2 #3 Deblo COCI 15p 35.4% 27
COCI '18 Contest 2 #4 Maja COCI 15p 22.0% 22
COCI '18 Contest 2 #5 Sunčanje COCI 25p 15.1% 21
COCI '18 Contest 3 #1 Magnus COCI 5 33.5% 1600
COCI '18 Contest 3 #2 Pismo COCI 5p 31.0% 35
COCI '18 Contest 3 #3 Sajam COCI 15p 32.4% 7
COCI '18 Contest 3 #4 NLO COCI 15 31.8% 18
COCI '18 Contest 3 #5 Praktični COCI 17p 23.5% 4
COCI '18 Contest 4 #5 Akvizna COCI 30p 31.3% 75
COCI '18 Contest 4 #4 Slagalica COCI 25p 0.0% 0
COCI '18 Contest 4 #1 Elder COCI 5p 36.8% 1035
COCI '18 Contest 4 #2 Wand COCI 7p 30.6% 158
COCI '18 Contest 4 #3 Kisik COCI 12p 25.7% 65
COCI '18 Contest 6 #5 Mobitel COCI 20p 30.7% 20
COCI '18 Contest 6 #4 Simfonija COCI 15p 20.9% 38
COCI '18 Contest 6 #3 Sličice COCI 10p 52.5% 79
COCI '18 Contest 5 #2 Jarvis COCI 5p 37.8% 138