diff --git a/primsAlgoCppEfficient b/primsAlgoCppEfficient
index 8b4fbd1..d8acc44 100644
--- a/primsAlgoCppEfficient
+++ b/primsAlgoCppEfficient
@@ -20,7 +20,7 @@ int main(){
     bool mstSet[N]; 
   
     for (int i = 0; i < N; i++) 
-        key[i] = INT_MAX, mstSet[i] = false; 
+        key[i] = INT_MAX, mstSet[i] = false,parent[i]=-1; 
     
     priority_queue< pair<int,int>, vector <pair<int,int>> , greater<pair<int,int>> > pq;