题目描述: Description Given a specified total t and a list of n integers, find all distinct sums using numbers from the list that add up to t. For example, if t = 4, n = 6, and the list is [4, 3, 2, 2, 1, 1], then there are four different sums that equal…
连着这两道都是开学前数构老师的“爱心作业”,还没上课开学就给我们布置作业了,这道题有点小坑,也经常遇到类似的问题,特地拿出来记录一下. ------------------------------------------------题目---------------------------------------------------------- Notice that the number 123456789 is a 9-digit number consisting exactly t…
不要62 Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 58665 Accepted Submission(s): 23095 Problem Description 杭州人称那些傻乎乎粘嗒嗒的人为62(音:laoer).杭州交通管理局经常会扩充一些的士车牌照,新近出来一个好消息,以后上牌照,不再含有不吉利的数字了,这样一来,就可…
We give the following inductive definition of a “regular brackets” sequence: the empty sequence is a regular brackets sequence, if s is a regular brackets sequence, then (s) and [s] are regular brackets sequences, and if a and b are regular brackets…
Jim has a balance and N weights. (1≤N≤20) The balance can only tell whether things on different side are the same weight. Weights can be put on left side or right side arbitrarily. Please tell whether the balance can measure an object of weight M. In…