From 4c5ed94087a691ce47882786aea64f7b5bf3c130 Mon Sep 17 00:00:00 2001
From: Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
Date: Sat, 20 Oct 2018 11:27:47 +0700
Subject: Bon appétit
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---
 codechef/teammate.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 codechef/teammate.py

(limited to 'codechef/teammate.py')

diff --git a/codechef/teammate.py b/codechef/teammate.py
new file mode 100644
index 0000000..cc3846e
--- /dev/null
+++ b/codechef/teammate.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+from collections import defaultdict
+
+for _ in range(int(input())):
+    n = int(input())
+    s = map(int, input().split())
+    d = defaultdict(int)
+    for i in s: d[i] += 1
+    result = 0
+    for value in s.values():
+        if value % 2:
+            pass
+        else:
+            result += value * (value-1) // 2
-- 
cgit 1.4.1