solved(python): baekjoon 14938

Author: himitery

baekjoon/python/14938/__init__.py

@@ -0,0 +1,47 @@
+import sys
+
+read = lambda: sys.stdin.readline().rstrip()
+
+
+class Problem:
+    def __init__(self):
+        self.n, self.m, self.r = map(int, read().split())
+        self.items = list(map(int, read().split()))
+        self.roads = [
+            [16 * int(row != col) for col in range(self.n)] for row in range(self.n)
+        ]
+
+        for _ in range(self.r):
+            src, dest, distance = map(int, read().split())
+            self.roads[src - 1][dest - 1] = distance
+            self.roads[dest - 1][src - 1] = distance
+
+    def solve(self) -> None:
+        path = self.find_path()
+
+        maximum = 0
+        for src in range(self.n):
+            count = 0
+            for dest in range(self.n):
+                if path[src][dest] <= self.m:
+                    count += self.items[dest]
+            maximum = max(maximum, count)
+
+        print(maximum)
+
+    def find_path(self) -> list[list[int]]:
+        path = self.roads[:]
+
+        for stopover in range(self.n):
+            for src in range(self.n):
+                for dest in range(self.n):
+                    path[src][dest] = min(
+                        path[src][dest],
+                        path[src][stopover] + path[stopover][dest],
+                    )
+
+        return path
+
+
+if __name__ == "__main__":
+    Problem().solve()

baekjoon/python/14938/main.py

@@ -0,0 +1,15 @@
+[
+  {
+    "input": [
+      "5 5 4",
+      "5 7 8 2 3",
+      "1 4 5",
+      "5 2 4",
+      "3 2 3",
+      "1 2 3"
+    ],
+    "expected": [
+      "23"
+    ]
+  }
+]

baekjoon/python/14938/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()