OJ-0822

题目

              4
            +---+
            |   |
            |   |
            |   | 3                       3 
            |   +---+                   +---+
            |       |                   |   |
            |       |                   |   |
          2 |       |                 2 |   |     2
        +---+       |               +---+   |   +---+
        |           |               |       |   |   |
        |           |               |       |   |   |
      1 |           | 1           1 |       | 1 |   | 1
    +---+           +---+       +---+       +---+   +---+
    |                   |       |                       |
    |                   |       |                       |
  0 |                   | 0   0 |                       | 0
+---+                   +---+---+                       +---+
  0   1   2   3   4   5   6   7   8   9  10  11  12  13  14

登山者想要知道一张地图中有多少座山峰

参考