Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users ▾
IOI '09 P2 - Hiring IOI 12p 32.3% 251
COCI '16 Contest 2 #3 Nizin COCI 10p 40.1% 251
DWITE '09 R5 #2 - Round to Second Prime DWITE 5 58.5% 250
Double Doors Regional P2 - Tudor Learns DDR Uncategorized 3 36.2% 250
Knapsack 3 Uncategorized 10p 26.4% 250
DMOPC '19 Contest 2 P1 - Box and Whiskers DMOPC 5 16.5% 250
Graph Contest 2 P1 - Connected Components Uncategorized 7 36.1% 249
DMOPC '21 Contest 6 P3 - An Art Problem DMOPC 10p 21.9% 249
A Math Contest P1 - Arrays Uncategorized 5 32.1% 249
GFSSOC '14 Winter S4 - Stalactites GFSSOC 17p 23.5% 248
DMOPC '14 Contest 3 P2 - Not Enough Rejudging! DMOPC 5p 27.1% 248
DMOPC '14 Contest 6 P2 - GO Faster DMOPC 5p 43.3% 248
CCC '19 S4 - Tourism CCC 20p 7.7% 248
WC '97 P4 - Typing Woburn Challenge 5 30.5% 248
SAC '22 Code Challenge 3 Junior P3 - Normal Probabilities SAC Coding Challenge 3p 68.6% 248
Yet Another Contest 2 P1 - Betting YAC 5p 22.2% 248
CCCHK '15 J4 - Where to build my house? CCC 5 17.6% 247
CCO '18 P4 - Gradient Descent CCO 15p 14.4% 247
DMOPC '18 Contest 4 P0 - Dr. Henri and Seeing Stars DMOPC 3p 37.3% 247
DMOPC '19 Contest 1 P1 - Test Scores DMOPC 5 20.8% 247
WC '18 Contest 4 S1 - World of StarCraft Woburn Challenge 10p 48.8% 247
DMOPC '20 Contest 5 P2 - On The Clock DMOPC 7p 18.2% 247
SAC '22 Code Challenge 1 P2 - That Circle SAC Coding Challenge 3 48.3% 247
OTHS Coding Competition 1 (Mock CCC) J3 - Explosion Uncategorized 5p 35.8% 247
Canada Day Contest 2021 - CCC Bad Haha Seasonal 12 36.3% 246
Encode Uncategorized 5 28.4% 245
BlueBook - Magic Square BlueBook 3 40.8% 245
Mock CCC '22 Contest 1 J3 - String Crossing Maximization Mock CCC 7p 12.7% 245
WOSS Dual Olympiad 2022 J1: Holiday Gifting Seasonal 3 56.7% 245
DMOPC '15 Contest 2 P4 - Personal Assistant DMOPC 12p 30.2% 244
Yet Another Contest 8 P2 - No More Modern Art YAC 7p 27.3% 244
COCI '07 Contest 4 #4 Muzicari COCI 10 32.0% 243
Mock CCC '23 Contest 1 J3 - Pairing Gifts Mock CCC 5p 12.5% 243
DMOPC '15 Contest 1 P4 - Itami and Candy DMOPC 10p 27.4% 242
CCOQR '16 - Stupendous Bowties CCC 10p 31.8% 242
CCC '17 S5 - RMT CCC 20p 19.2% 242
Bubble Cup V9 D Potions homework Bubble Cup 5 19.1% 242
DMOPC '18 Contest 1 P2 - Sorting DMOPC 5p 61.6% 242
WC '15 Finals J1 - Vertical Posting Woburn Challenge 3 44.7% 242
An Animal Contest 1 P4 - Alpaca Arrays AAC 10p 12.3% 242
COCI '14 Contest 2 #3 Studentsko COCI 12p 45.7% 241
DMOPC '14 Contest 4 P3 - Golden Lily DMOPC 10p 22.8% 241
COCI '07 Contest 6 #3 Granica COCI 10p 19.6% 241
Mock CCC '18 Contest 3 J2 - A Palindrome Problem Mock CCC 3p 24.1% 240
UTS Open '18 P3 - Restaurants Uncategorized 7p 32.4% 240
VMSS Pre-Pre-Windsor P7 - Magical Bribery Uncategorized 7 44.7% 240
SMAC 08/09 (Oct) #3 - Jumpscotch Uncategorized 12p 29.5% 239
Checkerboard Summation (Hard) Uncategorized 15p 46.6% 239
SAC '22 Code Challenge 5 Junior P4 - Course Requirements SAC Coding Challenge 7p 52.8% 239
DMOPC '14 Contest 7 P3 - Globally Unique Shells DMOPC 5p 33.5% 238