From 9e28e4c7b67c54229df11d355047ac8a88ea1817 Mon Sep 17 00:00:00 2001
From: Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
Date: Sun, 15 Dec 2019 15:09:13 +0700
Subject: Normalize pathname

---
 tht/B/QG-2016/trigrid.py | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 tht/B/QG-2016/trigrid.py

(limited to 'tht/B/QG-2016/trigrid.py')

diff --git a/tht/B/QG-2016/trigrid.py b/tht/B/QG-2016/trigrid.py
new file mode 100644
index 0000000..0911ef9
--- /dev/null
+++ b/tht/B/QG-2016/trigrid.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+
+TESTS = (4, 3, 5, 6, 111, 222, 3333, 4444, 55555, 666666, 7777777, 88888888,
+         999999999, 123456789123456789, 1000000000000000000)
+
+# Fomular from http://mathworld.wolfram.com/TriangleTiling.html
+n = lambda a: a * (a + 2) * (a * 2 + 1) // 8 % 2016
+
+with open('TRIGRID.TXT', 'w') as f:
+    for a in TESTS:
+        f.write("{}\n".format(n(a)))
-- 
cgit 1.4.1