diff --git a/productExceptSelf_shadowkakashi.cpp b/productExceptSelf_shadowkakashi.cpp
new file mode 100644
index 0000000..9a7a788
--- /dev/null
+++ b/productExceptSelf_shadowkakashi.cpp
@@ -0,0 +1,17 @@
+class Solution {
+public:
+    vector<int> productExceptSelf(vector<int>& nums) {
+        int n = nums.size();
+        vector<int> res(n, 1);
+        int prefix = 1, suffix = 1;
+        for (int i = 0; i < n; ++i) {
+            res[i] *= prefix;
+            prefix *= nums[i];
+        }
+        for (int i = n - 1; i >= 0; --i) {
+            res[i] *= suffix;
+            suffix *= nums[i];
+        }
+        return res;
+    }
+};