1 files changed, 6 insertions, 0 deletions
diff --git a/progs/a181.py b/progs/a181.py
new file mode 100644
index 0000000..c03fcfa
--- /dev/null
+++ b/progs/a181.py
@@ -0,0 +1,6 @@
+def Odd_Length_Sum(arr):
+    Sum = 0
+    l = len(arr)
+    for i in range(l):
+        Sum += ((((i + 1) *(l - i) + 1) // 2) * arr[i])
+    return Sum
+\ No newline at end of file