feat: enable new langs (#42491)

Enable italian and portuguese

curriculum/challenges/italian/10-coding-interview-prep/project-euler/problem-284-steady-squares.md

@@ -0,0 +1,44 @@
+---
+id: 5900f4891000cf542c50ff9b
+title: 'Problem 284: Steady Squares'
+challengeType: 5
+forumTopicId: 301935
+dashedName: problem-284-steady-squares
+---
+
+# --description--
+
+The 3-digit number 376 in the decimal numbering system is an example of numbers with the special property that its square ends with the same digits: 3762 = 141376. Let's call a number with this property a steady square.
+
+Steady squares can also be observed in other numbering systems. In the base 14 numbering system, the 3-digit number c37 is also a steady square: c372 = aa0c37, and the sum of its digits is c+3+7=18 in the same numbering system. The letters a, b, c and d are used for the 10, 11, 12 and 13 digits respectively, in a manner similar to the hexadecimal numbering system.
+
+For 1 ≤ n ≤ 9, the sum of the digits of all the n-digit steady squares in the base 14 numbering system is 2d8 (582 decimal). Steady squares with leading 0's are not allowed.
+
+Find the sum of the digits of all the n-digit steady squares in the base 14 numbering system for 1 ≤ n ≤ 10000 (decimal) and give your answer in the base 14 system using lower case letters where necessary.
+
+# --hints--
+
+`euler284()` should return 5a411d7b.
+
+```js
+assert.strictEqual(euler284(), '5a411d7b');
+```
+
+# --seed--
+
+## --seed-contents--
+
+```js
+function euler284() {
+
+  return true;
+}
+
+euler284();
+```
+
+# --solutions--
+
+```js
+// solution required
+```