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How to ask for help on a problem
Announcements

Here are some general guidelines for how to effectively ask for help on the Forum: Basic Requirements Include a link to the problem. For problems that that can be found within the guide, just include the internal Gui…

1 19144 December 30, 2020
Welcome to the USACO Forum!
1 7615 November 19, 2020
https://codeforces.com/problemset/problem/251/A
Problems and Contests
1 25 July 10, 2026
The hardest problem in Ha Noi City's first elimination round that no one has managed to solve onsite
Problems and Contests
2 981 July 8, 2026
can I use a basic template and auto code completition
General Questions
5 177 June 27, 2026
probelms before 2015
General Questions
6 200 June 25, 2026
guidance for a newbie to cp
Resources & Problemsets
2 232 June 23, 2026
What should I do if I can't solve anything in module
General Questions
1 489 June 21, 2026
Stuck in a Rut – issue with mathematical (pairwise) approach
Debugging Help
2 599 June 21, 2026
Wrong constants in internal solution
Resources & Problemsets
1 158 June 18, 2026
Two knights problem
Problems and Contests
1 731 June 8, 2026
CSES: Corner Subgrid Check
Problems and Contests
1 219 June 7, 2026
Possibly wrong internal solution
Resources & Problemsets
1 210 June 5, 2026
Can someone explain this please?
Debugging Help
3 274 May 28, 2026
How to practice and solve problems more effectively
General Questions
0 291 May 18, 2026
Feeling stuck as a beginner
General Questions
1 405 May 11, 2026
Looking for people to join contest for acpc contest
Off Topic
0 243 May 6, 2026
Troubles with geometry problem "16"
Debugging Help
0 333 May 1, 2026
Can i use helper functions like printArr
General Questions
2 455 April 29, 2026
Silver 2020 Jan Loan Repayment with Binomial Theorem
Problems and Contests
4 2001 April 24, 2026
Is competitive math useful in USACO
General Questions
5 610 April 22, 2026
What's the main differences between TWO POINTERS and SLIDING WINDOW?
General Questions
1 583 April 18, 2026
How to solve APIO 2019 - street lamps using 2DRQ
Problems and Contests
1 1005 April 17, 2026
Is the usaco guide problems page broken ?
Site Feedback
1 436 April 2, 2026
About the listed question
Problems and Contests
2 413 March 31, 2026
Does the problem "Team Building" (USACO 2016 December Platinum Problem 2) not reduce to finding all valid parenthetical expressions of length 2K given a string of ( and )?
0 671 March 27, 2026
Issue with USACO guide's solution for lasers and mirrors
Problems and Contests
2 491 March 17, 2026
About Resources in Usaco Guide
General Questions
1 447 March 11, 2026
Result of USACO contest not showing
General Questions
2 532 March 9, 2026
Need help understand the full solution for problem #3 Purchasing Milk
Problems and Contests
3 544 March 5, 2026