diff --git a/swea/10505.py b/swea/10505.py
new file mode 100644
index 0000000..3aff92b
--- /dev/null
+++ b/swea/10505.py
@@ -0,0 +1,41 @@
+t=int(input())
+
+for i in range(1,t+1):
+    n=int(input())
+    arr=list(map(int,input().split()))
+    
+    s=0
+    sarr=set()
+    cnt={}
+    for j in range(n//2):
+        a,b=arr[j],arr[-j-1]
+        s+=a+b
+        sarr.add(a)
+        sarr.add(b)
+        if a in cnt:
+            cnt[a]+=1
+        else:
+            cnt[a]=1
+        if b in cnt:
+            cnt[b]+=1
+        else:
+            cnt[b]=1
+    if n%2==1:
+        a=arr[n//2]
+        s+=a
+        sarr.add(a)
+        if a in cnt:
+            cnt[a]+=1
+        else:
+            cnt[a]=1
+
+    avg=s//n
+    result=0
+    slist=list(sarr)
+    slist.sort()
+    for j in slist:
+        if j>avg:
+            break
+        result+=cnt[j]
+    
+    print("#"+str(i),result)