matrix: Add topics to resolve #843

Paniscus Ateles · ilya-khadykin · commit 0ced0997d505 · 2017-10-28T20:34:06.000+03:00
diff --git a/config.json b/config.json
@@ -539,7 +539,10 @@
       "unlocked_by": null,
       "difficulty": 1,
       "topics": [
-
+        "loops",
+        "type_conversion",
+        "integers",
+        "matrices"
       ]
     },
     {
