P3073 [USACO13FEB] Tractor S 题解 二分+DFS

[USACO13FEB] Tractor S

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题���描述

FJ有块农田太崎岖了，他要买一辆新拖拉机才能在这里巡视。这块农田由N x N个格子的非负整数表示高度(1bool f = 1;x = 0;char ch = (p1 == p2 && (p2 = (p1 = buf) + fread(buf, 1, 1 if (ch == '-') f = !f;ch = (p1 == p2 && (p2 = (p1 = buf) + fread(buf, 1, 1 if (x