[Week-04] BOJ 5430

week-04/ek_5430_ac.py

@@ -0,0 +1,40 @@
+import sys
+from collections import deque
+read = sys.stdin.readline
+
+t = int(read().rstrip())
+
+for _ in range(t):
+    p = list(read().rstrip())
+    n = int(read().rstrip())
+    dq = deque(read().rstrip()[1:-1].split(','))
+
+    if n == 0:
+        dq = deque()
+
+    is_front = True
+    is_error = False
+    for ch in p:
+        if is_error:
+            break
+
+        if ch == 'R':
+            is_front = not is_front
+        elif ch == 'D':
+            if len(dq) == 0:
+                is_error = True
+                break
+            if is_front:
+                dq.popleft()
+            else:
+                dq.pop()
+
+    if is_error:
+        print("error")
+    else:
+        if len(dq) == 0:
+            print("[]")
+        else:
+            if not is_front:
+                dq.reverse()
+            print("[" + ",".join(dq) + "]")