第二个代码错了,重新贴:
```
#define Upd(A,L,R) {chkmx(A[i][j],A[k][j]+tot[L][R]); \
chkmx(A[i][j],A[k][max (j-tot[L][R],0)]);}
```
by incra @ 2024-06-14 16:46:41
为什么?两个写法不是等价的吗?
by qwe_ @ 2024-07-06 20:30:58
@[qwe_](/user/530134) 显然不等价
by incra @ 2024-07-20 22:06:12