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author | Raphael McSinyx <vn.mcsinyx@gmail.com> | 2017-08-19 16:18:30 +0700 |
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committer | Raphael McSinyx <vn.mcsinyx@gmail.com> | 2017-08-19 16:18:30 +0700 |
commit | 1be0e964ef4e9cca0a49affbf99a05e2966c4254 (patch) | |
tree | d3292ed01ac0eb8fd1d29ec864fadf2e4280e887 /others/other/nuoc.py | |
parent | 414c38d8cb31866daac61071bccf2e34a8d14d80 (diff) | |
download | cp-1be0e964ef4e9cca0a49affbf99a05e2966c4254.tar.gz |
Add others/other/nuoc.py
Diffstat (limited to 'others/other/nuoc.py')
-rwxr-xr-x | others/other/nuoc.py | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/others/other/nuoc.py b/others/other/nuoc.py new file mode 100755 index 0000000..9fcff54 --- /dev/null +++ b/others/other/nuoc.py @@ -0,0 +1,27 @@ +#!/usr/bin/env python3 +from heapq import heapify, heappop, heappush + + +with open('NUOC.INP') as f: + m, n = map(int, f.readline().split()) + height = [[int(i) for i in line.split()] for line in f] + +queue = ([(h, 0, i) for i, h in enumerate(height[0])] + + [(h, m - 1, i) for i, h in enumerate(height[-1])] + + [(height[i][0], i, 0) for i in range(m)] + + [(height[i][-1], i, n - 1) for i in range(m)]) +heapify(queue) +visited = ([[True] * n] + + [[True] + [False] * (n - 2) + [True] for _ in range(m - 2)] + + [[True] * n]) +result = 0 + +while queue: + h, i, j = heappop(queue) + for x, y in (i + 1, j), (i - 1, j), (i, j + 1), (i, j - 1): + if 0 <= x < m and 0 <= y < n and not visited[x][y]: + result += max(0, h - height[x][y]) + heappush(queue, (max(height[x][y], h), x, y)) + visited[x][y] = True + +with open('NUOC.OUT', 'w') as f: print(result, file=f) |