Bon appétit

1 files changed, 14 insertions, 0 deletions

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