37 lines
877 B
Python
37 lines
877 B
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from copy import deepcopy
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def is_increasing(l:list[str]) -> bool:
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for i in range(1,len(l)):
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pre, n = int(l[i-1]), int(l[i])
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if pre >= n or n-pre > 3:
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return False
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return True
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def is_decreasing(l:list[str]) -> bool:
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for i in range(1, len(l)):
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pre, n = int(l[i - 1]), int(l[i])
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if pre <= n or pre-n > 3:
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return False
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return True
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def check_line(lin:str) -> bool:
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l = lin.split()
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for i in range(len(l)):
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l2 = deepcopy(l)
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l2.pop(i)
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if is_increasing(l2) or is_decreasing(l2):
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return True
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return False
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if __name__ == "__main__":
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safe = 0
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input_file = open("input.txt", "r")
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for line in input_file:
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if check_line(line):
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safe += 1
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input_file.close()
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print(f'Safe:{safe}') |