Hello, Codeforces!
The 2025-2026 ICPC Latin American Regional Programming Contest was held last weekend, and the full problem set is now available on Codeforces Gym for virtual participation and upsolving. Whether you want a team practice or a solo grind, you're invited to try it and discuss solutions here.
This contest is part of the ICPC 2025-2026 cycle for Latin America and serves to select the teams for the Latin America Championship (March 2026, Chile). This year's regional had 558 official teams from 18 countries, competing simultaneously across 16 sites throughout the region. You can check the official results here: https://scorelatam.naquadah.com.br/latam-2025/.
Huge thanks to the LATAM jury who prepared and tested the tasks, and to all the volunteers who helped run the onsite events. The problems were written and prepared by Alejandro Strejilevich de Loma, andremfq, brunomont, gpoesia, Inés Kereki, lsantire, mnaeraxr, MarcosK, martins, Rafael Armando Garcia Gomez, rafaelgo, Roberio, cabessa and me.
An editorial with solution sketches is in the works; this post will be updated with the link as soon as it's ready.
Use the comments to share hints, approaches, and editorials (please mark spoilers).
Hope you enjoy the problems and have fun!
