Add files using upload-large-folder tool

unzip.sh

@@ -0,0 +1,15 @@
+
+for folder in jiawei zehan luoxin placement additional; do
+    cd $folder
+    for f in *.zip; do
+        dir="${f%.zip}"
+        if [ -d "$dir" ]; then
+            echo "Skipping $f (folder $dir already exists)"
+            continue
+        fi
+        echo "Unzipping $f..."
+        mkdir -p "$dir"
+        unzip -q "$f" -d "$dir"
+    done
+cd ..
+done