GUIDE (GAIT Universal IDE) is a lightweight integrated development environment developed by the GAIT research group of Beihang University and specially designed for NOI players. GUIDE has the advantages of cross-platform, simple operation, support for C/C++/Pascal three languages, and single-file compilation and debugging. After nearly a year of trial and modification, GUIDE version 1.0.0 is now officially released. Based on the beta version, GUIDE version 1.0.0 has adjusted several functions according to users' operating habits and added a number of shortcut functions to improve players' operating speed. This version of GUIDE will provide players with more help during practice and competition.