diff --git a/swea/3499.py b/swea/3499.py
new file mode 100644
index 0000000..ff9f316
--- /dev/null
+++ b/swea/3499.py
@@ -0,0 +1,16 @@
+t=int(input())
+for tc in range(1,t+1):
+    n=int(input())
+    arr=list(map(str,input().split()))
+    narr=[]
+    si=n//2
+    
+    for i in range(si):
+        narr.append(arr[i])
+        if n%2==1:
+            narr.append(arr[si+i+1])
+        else:
+            narr.append(arr[si+i])
+    if n%2==1:
+        narr.append(arr[si])
+    print("#"+str(tc),*narr)