diff -r 51d14b0c68c0 -r 2bdc3ac5e77c src/main.h
--- a/src/main.h	Sat Aug 03 01:18:56 2019 +0300
+++ b/src/main.h	Sat Aug 24 14:44:42 2019 +0300
@@ -1,1 +1,6 @@
 #pragma once
+#include <QString>
+#include <QVector>
+#include <QSet>
+
+static constexpr long double pi = 3.14159265358979323846264338327950288419716939937510L;