create dev channel

zeta/py/9375.py

@@ -0,0 +1,13 @@
+TC = int(input())
+
+for _ in range(TC):
+    S = 0
+    T = {}
+    N = int(input())
+    for _ in range(N):
+        p, q = input().split()
+        if q in T:
+            T[q] += 1
+        else:
+            T[q] = 1
+    for i in range()