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)