[BOJ] 덱 2 / 실버4 / 31분

Author: JYP0824

JYP/덱 2.py

@@ -0,0 +1,37 @@
+import sys
+from collections import deque
+
+input = sys.stdin.readline
+
+deque = deque([])
+
+n = int(input())
+for _ in range(n):
+    order = input().split()
+    match (order[0], len(deque) == 0):
+        case ("1", _):
+            deque.appendleft(int(order[1]))
+        case ("2", _):
+            deque.append(int(order[1]))
+        case ("3", True):
+            print(-1)
+        case ("3", False):
+            print(deque.popleft())
+        case ("4", True):
+            print(-1)
+        case ("4", False):
+            print(deque.pop())
+        case ("5", _):
+            print(len(deque))
+        case ("6", True):
+            print(1)
+        case ("6", False):
+            print(0)
+        case ("7", True):
+            print(-1)
+        case ("7", False):
+            print(deque[0])
+        case ("8", True):
+            print(-1)
+        case ("8", False):
+            print(deque[-1])