diff --git a/problem_3/problem_3.cpp b/problem_3/problem_3.cpp
index 64edb8f..bcc2007 100644
--- a/problem_3/problem_3.cpp
+++ b/problem_3/problem_3.cpp
@@ -1 +1,12 @@
-//Wirte your code logic here!
\ No newline at end of file
+int birthdayCakeCandles(vector<int> ar) {
+    int n = sizeof(ar)/sizeof(ar[0]); 
+    sort(ar.begin(), ar.end(), greater<int> ());
+    
+    int i = 0;
+    
+    while(ar[i] == ar[i+1]) {
+        i++;
+    }
+
+    return i+1;
+}