花了两个晚上来搞这道题. 第一个晚上想思路和写代码,第二个晚上调试. 然而还是菜,一直调不对,我的队友是Debug小能手呀(真的是无敌,哈哈,两个人一会就改好了) D. Timetable time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Ivan is a student at Berland State Universi…
I love sneakers! Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4602 Accepted Submission(s): 1893 Problem Description After months of hard working, Iserlohn finally wins awesome amount of s…
I love sneakers! Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description After months of hard working, Iserlohn finally wins awesome amount of scholarship. As a great zealot of sneakers, he decides to s…
I love sneakers! Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3265 Accepted Submission(s): 1337 Problem Description After months of hard working, Iserlohn finally wins awesome amount of sc…
分组背包要求每一组里面只能选一个,这个题目要求每一组里面至少选一个物品. dp[i, j] 表示前 i 组里面在每组至少放进一个物品的情况下,当花费 j 的时候,所得到的的最大价值.这个状态可以由三个状态转移过来: dp[i-1, v-a[i,j].b] 表示第 i 组没有放过,将要放进第 i 组里面的第 j 个物品 dp[i, v-a[i,j].b] 表示第 i 组已经放过了,将要放进第 i 组里面的第 j 个物品 dp[i, j] 表示第 i 中已经放过了,不放第 i 组里面的第 j 个物品…