Problem 1. Logical Moos Problem 2. Walking Along a Fence Problem 3. Farmer John's Favorite Permutation

USACO Programming Olympiad — New Season Preparation Guide

The USA Computing Olympiad (USACO) is a prestigious national-level programming competition in the United States. Since its founding in 1992, it has a history of over 30 years and is widely recognized as a highly valuable and authoritative STEM competition.

What is USACO?

USACO is an international programming competition open to high school students around the world. It is specifically designed for students interested in algorithms and competitive programming.

Participants must register an account to access the official problem sets and compete.

Beyond improving coding skills, USACO also:

Develops strong algorithmic thinking
Enhances problem-solving abilities
Strengthens college applications

Top institutions like Massachusetts Institute of Technology even include USACO among their recommended competitions.

Who Should Participate?

USACO is ideal for:

Students interested in computer programming
Students planning to apply for computer science or related majors

USACO Competition Schedule (Eastern Time, 2026 Reference)

Contest 1: January 9–12, 2026
Contest 2: January 30 – February 2, 2026
Contest 3: February 20–23, 2026
US Open: March 28, 2026

Note:
To receive official rankings in the Gold or Platinum divisions, U.S. participants must begin the contest at 12:00 PM Eastern Time on Saturday, when problems are first released.

Students in China can only participate up to the US Open.

How to Register for USACO

Visit the official website: http://www.usaco.org/
Click “Register for new account” in the top-right corner
Fill in your personal information in English

Activation

After registration:

You will receive your account credentials via email
Log in within 24 hours to activate your account
You can change your password after logging in

Once registered, you can log in and participate during contest windows.

Competition Rules

Format: Online, individual participation
Duration: 3–5 hours per contest
Language: English only (since 2023)
Programming Languages Supported:
- Java
- Python
- C++

Scoring System

Total score: 1000 points
Typically, 600–800 points are required to advance
Each problem contains multiple test cases
Points are awarded based on the number of correct test cases

USACO Division Progression

Participants advance through four levels:

Bronze → Silver → Gold → Platinum

Bronze

For first-time participants
Focus: basic programming syntax and simple algorithms

Silver

Requires passing Bronze
Focus: problem-solving and standard algorithms and data structures

Gold

Requires passing Silver
Focus: strong algorithmic skills and advanced data structures

Platinum

Requires passing Gold
Focus: deep algorithmic understanding and optimization skills

Academic Integrity

USACO places a strong emphasis on honesty:

All work must be completed independently
The use of generative AI tools (such as GitHub Copilot or ChatGPT) is strictly prohibited

Violations may result in a permanent ban from all USACO activities.

Get Ready for the New Season

To help students prepare efficiently for the upcoming USACO season, specialized preparation programs and training courses are now available.

Whether you are just starting out or aiming for higher divisions, structured guidance can significantly accelerate your progress.