diff --git a/Intermediate.txt b/Intermediate.txt
index f0f1651..52d436f 100644
--- a/Intermediate.txt
+++ b/Intermediate.txt
@@ -1768,3 +1768,21 @@ public class MergeSort {
 	}
 
 }
+
+37. Valid Parentheses
+Solution:
+#CPP
+
+bool isValid(string s) {
+    stack<char>st;
+    for (int i = 0; i < s.length(); i++) {
+        if (st.empty() || s[i] == '(' || s[i] == '{' || s[i] == '[') st.push(s[i]);
+        else {
+            if (s[i] == ')' && st.top() == '(') st.pop();
+            else if (s[i] == '}' && st.top() == '{') st.pop();
+            else if (s[i] == ']' && st.top() == '[') st.pop();
+            else st.push(s[i]);
+        }
+    }
+    return st.size() == 0;
+}
\ No newline at end of file