diff --git a/day1/PrimSim/2024S组初赛模拟赛.pdf b/day1/PreSim/2024S组初赛模拟赛.pdf
similarity index 100%
rename from day1/PrimSim/2024S组初赛模拟赛.pdf
rename to day1/PreSim/2024S组初赛模拟赛.pdf
diff --git a/day1/PrimSim/main b/day1/PreSim/main
similarity index 100%
rename from day1/PrimSim/main
rename to day1/PreSim/main
diff --git a/day1/PrimSim/main.cpp b/day1/PreSim/main.cpp
similarity index 100%
rename from day1/PrimSim/main.cpp
rename to day1/PreSim/main.cpp