diff --git a/Hydro/bzoj/1257/1257.cpp b/BZOJ/1257/1257.cpp
similarity index 100%
rename from Hydro/bzoj/1257/1257.cpp
rename to BZOJ/1257/1257.cpp
diff --git a/Hydro/bzoj/1475/1475.cpp b/BZOJ/1475/1475.cpp
similarity index 100%
rename from Hydro/bzoj/1475/1475.cpp
rename to BZOJ/1475/1475.cpp
diff --git a/Hydro/bzoj/1718/1718.cpp b/BZOJ/1718/1718.cpp
similarity index 100%
rename from Hydro/bzoj/1718/1718.cpp
rename to BZOJ/1718/1718.cpp
diff --git a/Hydro/bzoj/2330/2330.cpp b/BZOJ/2330/2330.cpp
similarity index 100%
rename from Hydro/bzoj/2330/2330.cpp
rename to BZOJ/2330/2330.cpp
diff --git a/Hydro/bzoj b/Hydro/bzoj
new file mode 120000
index 00000000..3f74a10c
--- /dev/null
+++ b/Hydro/bzoj
@@ -0,0 +1 @@
+../BZOJ
\ No newline at end of file