diff --git a/debug4.cpp b/debug4.cpp
index 4d74d5e..f77a1d6 100644
--- a/debug4.cpp
+++ b/debug4.cpp
@@ -3,7 +3,7 @@ using namespace std;
 
 int q(int arr[], int l, int r, int x)
 {
-    if (r >= l)
+    while (r >= l)
     {
         int o = l + (r - l) / 2;
 
@@ -11,9 +11,9 @@ int q(int arr[], int l, int r, int x)
             return o;
 
         if (arr[o] > x)
-            return q(arr, l, o - 1, x);
+            r = o - 1;
 
-        return q(arr, o + 1, r, x);
+        l = o + 1;
     }
 
     return -1;