24 lines
726 B
Python
24 lines
726 B
Python
#!/usr/bin/env python3
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def from_file(name):
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m = []
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with open(name, 'r') as f:
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for row in f.readlines():
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m.append([int(num) if num[-1] != '\n' else int(num[:-1]) for num in row.split(',')])
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return m
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def main():
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mx = from_file('data/081_matrix.txt')
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rl = len(mx[0])
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cl = len(mx)
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for i in range(rl - 2, -1, -1): mx[cl - 1][i] += mx[cl - 1][i + 1]
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for i in range(cl - 2, -1, -1): mx[i][rl - 1] += mx[i + 1][rl - 1]
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for col in range(cl - 2, -1, -1):
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for row in range(rl - 2, -1, -1):
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mx[col][row] += mx[col][row + 1] if mx[col][row + 1] < mx[col + 1][row] else mx[col + 1][row]
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return mx[0][0]
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if __name__ == '__main__':
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print(main())
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