这是一道经典传递闭包问题
经典传递闭包的过程代码
```cpp
for_(k, 1, n)
for_(i, 1, n)
for_(j, 1, n)
{
if(g[i][j] == 0)
g[i][j] = (g[i][k] & g[k][j]);
}
```
by GermanGu @ 2023-07-11 13:25:57