diff --git a/leetcode/cpp/Stacks/Rain Water Harvesting b/leetcode/cpp/Stacks/Rain Water Harvesting
new file mode 100644
index 0000000..5e7e025
--- /dev/null
+++ b/leetcode/cpp/Stacks/Rain Water Harvesting	
@@ -0,0 +1,16 @@
+int solve(int n, vector<int> height){
+    vector<int>prefix(n),suffix(n);
+    int water = 0;
+    prefix[0] = height[0];
+    suffix[n-1] = height[n-1];
+    for(int i=1;i<n;i++){
+        prefix[i] = max(prefix[i-1],height[i]);
+    }
+    for(int i=n-2;i>=0;i--){
+        suffix[i] = max(suffix[i+1],height[i]);
+    }
+    for(int i=0;i<n;i++){
+        water += min(prefix[i],suffix[i])-height[i];
+    }
+    return water;
+}