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The North American Invitational Programming Contest 2018 D. Missing Gnomes

摘要： A family of nn gnomes likes to line up for a group picture. Each gnome can be uniquely identified by a number 1..n1..n written on their hat. Suppose t 阅读全文

posted @ 2018-08-16 15:53 cltt 阅读(146) 评论(0) 推荐(0) 编辑

The North American Invitational Programming Contest 2018 H. Recovery

摘要： Consider an n \times mn×m matrix of ones and zeros. For example, this 4 \times 44×4: \displaystyle \begin{matrix} 1 & 1 & 1 & 1 \\ 0 & 1 & 1 & 1 \\ 0 阅读全文

posted @ 2018-08-16 15:33 cltt 阅读(331) 评论(0) 推荐(0) 编辑

cf 1016D

摘要： D. Vasya And The Matrix time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output D. Vasya And The 阅读全文

posted @ 2018-08-16 14:55 cltt 阅读(165) 评论(0) 推荐(0) 编辑

误区

摘要： int n; int main() { scanf("%d",&n); cout>b == a/(2^b） &&还具有短路的功能，即如果第一个表达式为false，则不再计算第二个表达式 int a[5]; char c ='d'; for(int i=0;i<4;i++) a[i]=i; for(int i=0;i<... 阅读全文

posted @ 2018-08-16 11:50 cltt 阅读(153) 评论(0) 推荐(0) 编辑

poj 3783

摘要： Balls Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 1196 Accepted: 783 Description The classic Two Glass Balls brain-teaser is often pose 阅读全文

posted @ 2018-08-16 10:45 cltt 阅读(217) 评论(0) 推荐(0) 编辑

The North American Invitational Programming Contest 2018 E. Prefix Free Code

摘要： Consider nn initial strings of lower case letters, where no initial string is a prefix of any other initial string. Now, consider choosing kk of the s 阅读全文

posted @ 2018-08-15 20:37 cltt 阅读(150) 评论(0) 推荐(0) 编辑

hdu 6383

摘要： p1m2 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 925 Accepted Submission(s): 351 Problem De 阅读全文

posted @ 2018-08-15 10:24 cltt 阅读(145) 评论(0) 推荐(0) 编辑

ACM-ICPC 2016 Qingdao Preliminary Contest G. Sort

摘要： Recently, Bob has just learnt a naive sorting algorithm: merge sort. Now, Bob receives a task from Alice.Alice will give Bob N sorted sequences, and t 阅读全文

posted @ 2018-08-14 20:25 cltt 阅读(226) 评论(0) 推荐(0) 编辑

cf 1020 C

摘要： C. Elections time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output C. Elections time limit per 阅读全文

posted @ 2018-08-13 17:56 cltt 阅读(323) 评论(0) 推荐(0) 编辑

二进制

摘要： 1 如果 x>0&&x&(x-1)==0 那么x为2的指数幂 0&（-1）==0 阅读全文

posted @ 2018-08-12 20:41 cltt 阅读(150) 评论(0) 推荐(0) 编辑