create dev channel

zeta/py/completed/7785.py

@@ -0,0 +1,17 @@
+import sys
+
+input = sys.stdin.readline
+print = sys.stdout.write
+
+N = int(input())
+d = dict()
+for _ in range(N):
+    n, t = input().rstrip().split()
+    if t.startswith("e"):
+        d[n] = 1
+    else:
+        d[n] = 0
+x = sorted([k for k, v in d.items() if v == 1])[::-1]
+for i in x:
+    print(i)
+    print('\n')