Supermarket 时间限制:1000 ms | 内存限制:65535 KB 难度:4 描述 A supermarket has a set Prod of products on sale. It earns a profit px for each product x∈Prod sold by a deadline dx that is measured as an integral number of time units starting from the moment th…
推桌子 时间限制:1000 ms | 内存限制:65535 KB 难度:3 描述 The famous ACM (Advanced Computer Maker) Company has rented a floor of a building whose shape is in the following figure. The floor has 200 rooms each on the north side and south side along the corridor. R…