From 67bb27e9f5beec4d8ca0a6c29f045d5f23d6f40f Mon Sep 17 00:00:00 2001
From: Nguyễn Gia Phong <mcsinyx@disroot.org>
Date: Sun, 28 Feb 2021 17:25:57 +0700
Subject: [lang] Reorganize language learning archive

---
 lang/cpptour/weirdo.cc | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 lang/cpptour/weirdo.cc

(limited to 'lang/cpptour/weirdo.cc')

diff --git a/lang/cpptour/weirdo.cc b/lang/cpptour/weirdo.cc
new file mode 100644
index 0000000..f79336c
--- /dev/null
+++ b/lang/cpptour/weirdo.cc
@@ -0,0 +1,83 @@
+#include <iostream>
+#include <set>
+#include <stdexcept>
+#include <string>
+#include <unordered_map>
+
+using namespace std;
+
+typedef unordered_map<char, size_t> charmap;
+typedef set<char> charset;
+
+constexpr double INF = 1e7;
+const charset VOWELS {'a', 'e', 'i', 'o', 'u'};
+
+inline size_t
+sqr (size_t i)
+{
+  return i * i;
+}
+
+bool
+isvowel (const string& s, size_t i)
+{
+  try { return VOWELS.count (s.at (i)); }
+  catch (out_of_range const& e) { return true; }
+}
+
+void
+update (const string& s, charmap& x, charmap& f)
+{
+  charset b;
+  for (const auto& c : s)
+    {
+      f[c]++;
+      b.insert (c);
+    }
+  for (const auto& c : b)
+    x[c]++;
+}
+
+int
+main ()
+{
+  size_t t, l;
+  string s;
+
+  cin >> t;
+  while (t--)
+    {
+      charmap xa, fa, xb, fb;
+      cin >> l;
+      while (l--)
+        {
+          cin >> s;
+          size_t i = s.size ();
+          bool a = true;
+
+          while (i--)
+            if (isvowel (s, i - 1) + isvowel (s, i) + isvowel (s, i + 1) < 2)
+              {
+                update (s, xb, fb);
+                a = false;
+                break;
+              }
+          if (a)
+            update (s, xa, fa);
+        }
+
+      double sc = 1.0;
+      for (const auto& p : xa)
+        sc *= p.second;
+      for (const auto& p : fa)
+        sc /= sqr (p.second);
+      for (const auto& p : xb)
+        sc /= p.second;
+      for (const auto& p : fb)
+        sc *= sqr (p.second);
+      if (sc > INF)
+        cout << "Infinity" << endl;
+      else
+        cout << sc << endl;
+    }
+}
-- 
cgit 1.4.1