```cpp bool cmp(node a,node b) { if(a.a+b.b+max(a.b,b.a)==b.a+a.b+max(a.a,b.b)) back a.a<b.a; back a.a+b.b+max(a.b,b.a)<b.a+a.b+max(a.a,b.b); } ``` 大概就是这样，然后直接过了 by 断清秋 @ 2021-10-15 12:25:57