[BOJ] 1764 듣보잡 (S4)

Author: letthem

심수연/11주차/260309.py

@@ -0,0 +1,21 @@
+# https://www.acmicpc.net/problem/1764
+
+import sys
+input = sys.stdin.readline
+
+N, M = map(int, input().split())
+
+didnt_heard = set()
+didnt_see = set()
+
+for _ in range(N):
+  didnt_heard.add(input().strip())
+
+for _ in range(M):
+  didnt_see.add(input().strip())
+  
+didnt_heard_see = sorted(list(didnt_heard & didnt_see))
+
+print(len(didnt_heard_see))
+for i in didnt_heard_see:
+  print(i)