Hello everyone!

We are starting a new series on Repovive: Weekly Challenges.

In each weekly challenge, we will release problems for 7 consecutive days. After each problem is released, you will have 24 hours to get it accepted. Penalty does not matter.

There will be a live ranking throughout the challenge. The goal of these challenges is both competition and learning, so try not to miss any day!

Next week, from Monday to Sunday, the topic will be Approximation.

For Week 1, we will release two independent problems each day: one Easy problem and one Hard problem. These two problems are separate tasks, so the Hard problem is not necessarily a harder version of the Easy problem.

In this style of problems, we usually have an optimization problem, but you do not need to find the optimal answer. It is enough to construct a solution with a guaranteed approximation factor specified in the statement. In many cases, finding the exact optimum is either not accepted or much harder than what is expected.

The problems this week are not intended to be extremely difficult. The main goal is to introduce this interesting style of problems and make it more familiar to participants.

If the reception is good, we will continue this type of challenge in the future.

• Start Date: Monday, 13 July 2026
• Duration: 7 days
• Registration Link: https://repovive.com/contests/10000

We hope you enjoy the challenge!