88차 3번 문제풀이

Author: hangyeol

live8/test88/문제3/백한결.py

@@ -0,0 +1,12 @@
+def solution(n, lost, reserve):
+
+    reserve_set = set(reserve) - set(lost)
+    lost_set = set(lost) - set(reserve)
+
+    for i in sorted(reserve_set):
+        if i - 1 in lost_set:
+            lost_set.remove(i- 1)
+        elif i + 1 in lost_set:
+            lost_set.remove(i + 1)
+
+    return n - len(lost_set)