diff --git a/LegacyMonitorBinaryAutocomplete.cpp b/LegacyMonitorBinaryAutocomplete.cpp
new file mode 100644
index 0000000..a4418f7
--- /dev/null
+++ b/LegacyMonitorBinaryAutocomplete.cpp
@@ -0,0 +1,86 @@
+// Online C++ compiler to run C++ program online
+#include <iostream>
+#include <string>
+#include <vector>
+using namespace std;
+typedef struct Trie {
+    public:
+    Trie*left=nullptr;
+    Trie*right=nullptr;
+    int val=0;
+    Trie(int num){
+        val=num;
+    }
+} Trie;
+
+vector<int> helper(vector<std::string>s){
+    vector<int>res;
+    Trie* head= new Trie(0);
+    for(int i=0;i<s.size();i++){
+        auto cur=head;
+        if(i==0){
+            res.push_back(0);
+        }else{
+            bool f=false;
+            int num=cur->val;
+           for(int j=0;j<s[i].length();j++){
+               if(s[i][j]=='0'){
+                   if(cur->left!=nullptr){
+                       cur=cur->left;
+                       num=cur->val;
+                   }else{
+                       f=true;
+                       break;
+                   }
+               }else{
+                   if(cur->right!=nullptr){
+                       cur=cur->right;
+                       num=cur->val;
+                   }else{
+                       f=true;
+                       break;
+                   }
+               }
+               
+           }
+           res.push_back(num);
+        }
+        cur=head;
+        head->val=i+1;
+        
+        for(int j=0;j<s[i].length();j++){
+            if(s[i][j]=='0'){
+                if(cur->left!=nullptr){
+                    cur=cur->left;
+                    cur->val=i+1;
+                }else{
+                    cur->left=new Trie(i+1);
+                    cur=cur->left;
+                }
+            }else{
+                if(cur->right!=nullptr){
+                    cur=cur->right;
+                    cur->val=i+1;
+                }else{
+                    cur->right=new Trie(i+1);
+                    cur=cur->right;
+                }
+            }
+        }
+        
+    }
+    return res;
+}
+
+int main() {
+    // Write C++ code here
+    vector<string>in{"000","1110","01","001","110","11"};
+    vector<string>in1{"10110100","1011","10110001"};
+    auto res= helper(in1);
+    for(auto y:res){
+        cout<<y<<" ";
+    }
+    cout<<"\n";
+    
+    return 0;
+}