solved(python): baekjoon 11054

Author: himitery

baekjoon/python/11054/__init__.py

@@ -0,0 +1,31 @@
+import sys
+
+read = lambda: sys.stdin.readline().rstrip()
+
+
+class Problem:
+    def __init__(self):
+        self.size = int(read())
+        self.data = list(map(int, read().split()))
+
+    def solve(self) -> None:
+        up, down = [1] * self.size, [1] * self.size
+
+        for end in range(1, self.size):
+            for start in range(end):
+                if self.data[start] < self.data[end]:
+                    up[end] = max(up[end], up[start] + 1)
+
+        for end in range(self.size - 1, 0, -1):
+            for start in range(end):
+                if self.data[start] > self.data[end]:
+                    down[start] = max(down[start], down[end] + 1)
+
+        maximum = 0
+        for idx in range(self.size):
+            maximum = max(maximum, up[idx] + down[idx] - 1)
+        print(maximum)
+
+
+if __name__ == "__main__":
+    Problem().solve()

baekjoon/python/11054/main.py

@@ -0,0 +1,11 @@
+[
+  {
+    "input": [
+      "10",
+      "1 5 2 1 4 3 4 5 2 1"
+    ],
+    "expected": [
+      "7"
+    ]
+  }
+]

baekjoon/python/11054/sample.json

@@ -0,0 +1,36 @@
+import json
+import os.path
+import unittest
+from io import StringIO
+from unittest.mock import patch
+
+from parameterized import parameterized
+
+from main import Problem
+
+
+def load_sample(filename: str):
+    path = os.path.join(os.path.dirname(os.path.abspath(__file__)), filename)
+
+    with open(path, "r") as file:
+        return [(case["input"], case["expected"]) for case in json.load(file)]
+
+
+class TestCase(unittest.TestCase):
+    @parameterized.expand(load_sample("sample.json"))
+    def test_case(self, case: str, expected: list[str]):
+        # When
+        with (
+            patch("sys.stdin.readline", side_effect=case),
+            patch("sys.stdout", new_callable=StringIO) as output,
+        ):
+            Problem().solve()
+
+            result = output.getvalue().rstrip()
+
+        # Then
+        self.assertEqual("\n".join(expected), result)
+
+
+if __name__ == "__main__":
+    unittest.main()