diff --git a/Algorithm/Implementation/13-acm-icpc-team.php b/Algorithm/Implementation/13-acm-icpc-team.php
index 2f211c6..fd28037 100755
--- a/Algorithm/Implementation/13-acm-icpc-team.php
+++ b/Algorithm/Implementation/13-acm-icpc-team.php
@@ -32,20 +32,36 @@
 
 
 // just soso..
-$highest = -1;
-$bestTeam = 0;
-
-for ($i=0; $i < $n - 1; $i++) {
-    for ($j=$i + 1; $j < $n; $j++) {
-        $temp = substr_count($topic[$i] | $topic[$j], "1");
-        if ($temp > $highest) {
-            $highest = $temp;
-            $bestTeam = 1;
-        } else if ($temp == $highest) {
-            $bestTeam ++;
-        }
-    }
-}
+// $highest = -1;
+// $bestTeam = 0;
+
+// for ($i=0; $i < $n - 1; $i++) {
+//     for ($j=$i + 1; $j < $n; $j++) {
+//         $temp = substr_count($topic[$i] | $topic[$j], "1");
+//         if ($temp > $highest) {
+//             $highest = $temp;
+//             $bestTeam = 1;
+//         } else if ($temp == $highest) {
+//             $bestTeam ++;
+//         }
+//     }
+// }
+
+// echo $highest . PHP_EOL;
+// echo $bestTeam . PHP_EOL;
 
-echo $highest . PHP_EOL;
-echo $bestTeam . PHP_EOL;
+ $highest = -1;
+ $bestTeam = 0;
+ $n = $topic;
+ for ($i=0; $i < count($n) - 1; $i++) {
+     for ($j=$i + 1; $j < count($n); $j++) {
+         $temp = substr_count($topic[$i] | $topic[$j], "1");
+         if ($temp > $highest) {
+             $highest = $temp;
+             $bestTeam = 1;
+         } else if ($temp == $highest) {
+             $bestTeam ++;
+         }
+     }
+ }
+ return [$highest,$bestTeam];