链接: http://vj.acmclub.cn/contest/view.action?cid=168#problem/G 时限:250MS 内存:4096KB 64位IO格式:%I64d & %I64u 提交 状态 练习 SGU 107 问题描述 For given number N you must output amount of N-digit numbers, such, that last digits of their square is equal to 987…
107. 987654321 problem time limit per test: 0.25 sec. memory limit per test: 4096 KB For given number N you must output amount of N-digit numbers, such, that last digits of their square is equal to 987654321. Input Input contains integer number N (1<…
987654321 problem Problem's Link Mean: 略 analyse: 这道题目是道简单题. 不过的确要好好想一下: 通过简单的搜索可以知道,在N<9时答案一定为0,而N=9时有8个解.由于题目只是问“最后9位”,所以N=10的时侯第10位的取值不会对平方和的“最后9位”产生影响,而第10位上有9种取值方法,所以N=10的时侯,答案是72. 同样可以知道,当N>10的时侯,只要在72后加入(N-10)个“0”即可. Time complexity: O(n) vie…
10-7. TPH继承模型中使用存储过程 问题 用一个存储过程来填充TPH继承模型的实体 解决方案 假设已有如Figure 10-7所示模型. 我们有两个派生实体: Instructor(教员)和Student(学生). 这个模型使用TPH继承方式,所以数据库中只有一个表. Person(人员)表有一个鉴别列,用来把表的记录映射到不同的派生实体上. 我们想用一个存储过程来填充实体. Figure 10-7. A model for instructors and students 用下面的步骤,…
水概率....SGU里难得的水题.... 495. Kids and Prizes Time limit per test: 0.5 second(s)Memory limit: 262144 kilobytes input: standardoutput: standard ICPC (International Cardboard Producing Company) is in the business of producing cardboard boxes. Recently the…
sgu 101 - Domino Time Limit:250MS Memory Limit:4096KB 64bit IO Format:%I64d & %I64u Description Dominoes – game played with small, rectangular blocks of wood or other material, each identified by a number of dots, or pips, on its face. The bl…
题目链接:http://acm.sgu.ru/problem.php?contest=0&problem=455 Due to the slow 'mod' and 'div' operations with int64 type, all Delphi solutions for the problem 455 (Sequence analysis) run much slower than the same code written in C++ or Java. We do not gua…
104. Little shop of flowers time limit per test: 0.25 sec. memory limit per test: 4096 KB 问题: 你想要将你的花窗安排得最具美感.有F束花,每一束花都不一样,至少有F个按顺序排成一行的花瓶.花瓶从左到右,依次编号1-V.而花放置的位置是可以改变的,花依次编号1到F.花的序号有一个特征,即是序号决定了花束出现在花瓶里的顺序.例如,有两束花编号i和j,满足i<j,那么i所在的花瓶一定要在j所在花瓶的左边,即是i…