Added 2021 (python)

2021/10/input

@@ -0,0 +1,106 @@
+{{[([{{[<{{<[[()()]]((<>())[<>[]])>{{{[]<>}[<>]}<[{}{}][[]{}]>}}<<<<<>()>>((<>())<{}()>)><{{[]()}{()
+{<<{({{[<<[<(<<>[]><<>>){<{}()>[{}()]}>]{{[{{}{}}([]())][{[]()>[[][]]]}<(<{}()><<>[]>)>}>>{[(
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+{<[([[<<<(<<<<(){}>>{([]<>){[]{}}}><<[()()][{}[]]>[(<><>)[<>]]>>){[<[<()<>>[[]()]]<<()[]>(<>{})>>[(([](
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+[[([{<<(((((({<>[]}<<>()>))((({}{})<[][]>)({<>()})))[{[[()]{<>[]}]}[(<<><>>{[][]})({<>[]}[{}<>])]])[<{<
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2021/10/prog.py

@@ -0,0 +1,76 @@
+from collections import deque
+
+VERBOSE = True
+def verbose(s = "", *args, **kwargs):
+    if VERBOSE:
+        print(s, *args, **kwargs)
+
+def get_input(sample = False, part = 1):
+    with open(f'sample_p{part}' if sample else 'input', 'r') as f:
+        return [line.strip() for line in f.readlines()]
+
+
+def result(inp, part = 1):
+    res = 0
+    opening = ["(","[", "{", "<"]
+    closing = [">", "}" ,"]",  ")"]
+    pairs = {
+        "(": ")",
+        "[": "]",
+        "{": "}",
+        "<": ">",
+
+    }
+    points_1 = {
+        ")" : 3,
+        "]" : 57,
+        "}" : 1197,
+        ">" : 25137
+    }
+    points_2 = {
+        ")" : 1,
+        "]" : 2,
+        "}" : 3,
+        ">" : 4
+    }
+    tmp_res = []
+    for line in inp:
+        stack = deque()
+        ignore = False
+        for c in line:
+            if c in opening:
+                stack.append(c)
+            elif c in closing:
+                op = stack.pop()
+                if pairs[op] != c:
+                    ignore = True
+                    if part == 1 :
+                        res += points_1[c]
+                        break
+        if part == 2 and (not ignore) and len(stack) > 0:
+            tmp = 0
+            verbose("stack before: ", stack, end="")
+            while len(stack) > 0:
+                tmp *= 5
+                tmp += points_2[pairs[stack.pop()]]
+            # insert sort
+            verbose(" = ", tmp)
+            if len(tmp_res) == 0 or tmp > tmp_res[len(tmp_res) - 1]:
+                tmp_res.append(tmp)
+            else:
+                for i, r in enumerate(tmp_res):
+                    if tmp < r:
+                        tmp_res = tmp_res[:i] + [tmp] + tmp_res[i:]
+                        break
+
+
+    verbose(tmp_res)
+    if part == 1:
+        return res
+    else:
+        return tmp_res[len(tmp_res)//2]
+
+
+if __name__ == "__main__":
+    VERBOSE = False
+    print(result(get_input(), part = 2))

2021/10/sample_p1

@@ -0,0 +1,10 @@
+[({(<(())[]>[[{[]{<()<>>
+[(()[<>])]({[<{<<[]>>(
+{([(<{}[<>[]}>{[]{[(<()>
+(((({<>}<{<{<>}{[]{[]{}
+[[<[([]))<([[{}[[()]]]
+[{[{({}]{}}([{[{{{}}([]
+{<[[]]>}<{[{[{[]{()[[[]
+[<(<(<(<{}))><([]([]()
+<{([([[(<>()){}]>(<<{{
+<{([{{}}[<[[[<>{}]]]>[]]

2021/10/test.py

@@ -0,0 +1,12 @@
+from prog import *
+import unittest
+
+class Tests(unittest.TestCase):
+    def test_part1(self):
+        self.assertEqual(result(get_input(sample = True)), 26397)
+        self.assertEqual(result(get_input()), 341823)
+
+
+    def test_part2(self):
+        self.assertEqual(result(get_input(sample = True), part = 2), 288957)
+