86 lines
2.5 KiB
Python
86 lines
2.5 KiB
Python
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#!/usr/bin/env python3
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from typing import List
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class Solution:
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def __init__(self) -> None:
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self.lines: List[str] = []
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self.lines_split: List[List[str]] = []
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self.lines_clean: List[List[int]] = []
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self.result: int = 0
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def read(self) -> None:
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with open("input") as f:
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self.lines = f.readlines()
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def clean(self) -> None:
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for i in range(len(self.lines)):
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self.lines[i] = self.lines[i].strip()
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def split_lines(self) -> None:
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for i in range(len(self.lines)):
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self.lines_split.append(self.lines[i].split())
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def clean_lines(self) -> None:
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for j in range(len(self.lines_split)):
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tmp_list: List[int] = []
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for i in range(len(self.lines_split[j])):
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tmp_list.append(int(self.lines_split[j][i]))
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self.lines_clean.append(tmp_list)
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# This is an even uglier hack than in solution1. HACK: Make this look nicer.
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def _is_safe(self, levels: List[int]) -> bool:
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rate: int = 2137
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unsafe_vals: int = 0
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for i in range(len(levels) - 1):
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if rate == 2137:
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rate = 0
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difference: int = levels[i] - levels[i+1]
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if rate == 0:
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if difference < 0:
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rate = -1
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elif difference > 0:
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rate = 1
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elif rate == 1:
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if difference < 0:
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if unsafe_vals != 1:
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rate = -1
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unsafe_vals += 1
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elif rate == -1:
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if difference > 0:
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if unsafe_vals != 1:
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rate = 1
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unsafe_vals += 1
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if unsafe_vals > 1:
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return False
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for i in range(len(levels) - 1):
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rate: int = 0
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difference: int = abs(levels[i+1] - levels[i])
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if difference not in range(1,4):
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unsafe_vals += 1
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if unsafe_vals > 1:
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return False
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return True
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def calculate_result(self) -> int:
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for level in self.lines_clean:
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if self._is_safe(level):
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self.result += 1
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return self.result
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def main() -> None:
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solver: Solution = Solution()
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solver.read()
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solver.clean()
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solver.split_lines()
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solver.clean_lines()
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result: int = solver.calculate_result()
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print(f"The amount of safe values is: {result}")
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if __name__ == "__main__":
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main()
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