节点 | f(n,m) | 动作 | 节点值 | 备注 |
1 | f(1,2) |
|
|
|
2 | f(0,2) | f1 = 2 | f1 = f(0,2) = 2 |
|
H1 | f(1,2) |
|
| 回溯,搜索第二分支 |
3 | f(1,1) |
|
|
|
4 | f(0,1) | f1 = 1 | f1 = f(0,1) = 1 |
|
H3 | f(1,1) |
|
| 回溯,搜索第二分支 |
5 | f(1,0) | f2 = 1 | f2 = f(1,0) = 1 |
|
H3 | f(1,1) |
|
| 回溯,搜索第三分支 |
6 | f(0,0) | f3 = 0 | f3 = f(0,0) = 0 |
|
|
| f2 = f1 − f2 + f3 = 0 |
|
|
H3 | f(1,1) |
| f2 = 0 | 回溯节点3,搜索完毕 |
H1 | f(1,2) |
|
| 回溯,搜索第三分支 |
7 | f(0,1) | f3 = 1 | f3 = f(0,1) = 1 |
|
|
| f1 − f2 + f3 = 2 – 0 + 1 = 3 |
|
|
H1 | f(1,2) |
| 3 | 回溯到根节点,结束 |