Add 2023 solutions

2024-07-07 20:30:53 -04:00
parent da1c37ffa7
commit d582dfc777
29 changed files with 2826 additions and 0 deletions
--- a/2023/d13.py
+++ b/2023/d13.py
@@ -0,0 +1,92 @@
+from lib import *
+
+EXAMPLE = """
+#.##..##.
+..#.##.#.
+##......#
+##......#
+..#.##.#.
+..##..##.
+#.#.##.#.
+
+#...##..#
+#....#..#
+..##..###
+#####.##.
+#####.##.
+..##..###
+#....#..#
+""".replace("\n", "", count=1)
+
+
+def solve(i: Input, second=False):
+    res = 0
+    ps = i.paras()
+
+    for p in ps:
+        g = Input(p).grid2()
+
+        row_res, col_res = [], []
+        rows = g.rows()
+        cols = g.cols()
+        for i_row in range(len(rows) - 1):
+            for i in range(min(i_row + 1, len(rows) - i_row - 1)):
+                if rows[i_row - i] != rows[i_row + i + 1]:
+                    break
+            else:
+                if not second:
+                    res += (i_row + 1) * 100
+                row_res.append(i_row)
+
+        for i_col in range(len(cols) - 1):
+            for i in range(min(i_col + 1, len(cols) - i_col - 1)):
+                if cols[i_col - i] != cols[i_col + i + 1]:
+                    break
+            else:
+                if not second:
+                    res += (i_col + 1)
+                col_res.append(i_col)
+
+        if not second:
+            continue
+
+        for c in g.all_coords():
+            g[c] = '.' if g[c] == '#' else '#'
+            rows = g.rows()
+            cols = g.cols()
+            for i_row in range(len(rows) - 1):
+                for i in range(min(i_row + 1, len(rows) - i_row - 1)):
+                    if rows[i_row - i] != rows[i_row + i + 1]:
+                        break
+                else:
+                    if not i_row in row_res:
+                        res += (i_row + 1) * 100
+                        row_res.append(i_row)
+
+            for i_col in range(len(cols) - 1):
+                for i in range(min(i_col + 1, len(cols) - i_col - 1)):
+                    if cols[i_col - i] != cols[i_col + i + 1]:
+                        break
+                else:
+                    if not i_col in col_res:
+                        res += (i_col + 1)
+                        col_res.append(i_col)
+            g[c] = '.' if g[c] == '#' else '#'
+        if len(row_res + col_res) != 2:
+            raise Exception("Unexpected amount of mirrors!!")
+    return res
+
+
+def main():
+    DAY_INPUT = "d13.txt"
+
+    print("Example  1:", solve(Input(EXAMPLE)))
+    print("Solution 1:", solve(Input(DAY_INPUT)))
+    assert 29846 == solve(Input(DAY_INPUT))
+
+    print("Example  2:", solve(Input(EXAMPLE), True))
+    print("Solution 2:", solve(Input(DAY_INPUT), True))
+    assert 25401 == solve(Input(DAY_INPUT), True)
+
+if __name__ == "__main__":
+    main()