diff --git a/everywhere.py b/everywhere.py
new file mode 100644
index 0000000..8453115
--- /dev/null
+++ b/everywhere.py
@@ -0,0 +1,10 @@
+t = int(input())
+
+for ti in range(t):
+    n = int(input())
+    cities = set()
+
+    for ni in range(n):
+        cities.add(input().strip())
+
+    print(len(cities))