HDU1014
来源:互联网 发布:python高级编程 编辑:程序博客网 时间:2024/06/05 22:48
Uniform Generator
Problem Description
Computer simulations often require random numbers. One way to generate pseudo-random numbers is via a function of the form
seed(x+1) = [seed(x) + STEP] % MOD
where '%' is the modulus operator.
Such a function will generate pseudo-random numbers (seed) between 0 and MOD-1. One problem with functions of this form is that they will always generate the same pattern over and over. In order to minimize this effect, selecting the STEP and MOD values carefully can result in a uniform distribution of all values between (and including) 0 and MOD-1.
For example, if STEP = 3 and MOD = 5, the function will generate the series of pseudo-random numbers 0, 3, 1, 4, 2 in a repeating cycle. In this example, all of the numbers between and including 0 and MOD-1 will be generated every MOD iterations of the function. Note that by the nature of the function to generate the same seed(x+1) every time seed(x) occurs means that if a function will generate all the numbers between 0 and MOD-1, it will generate pseudo-random numbers uniformly with every MOD iterations.
If STEP = 15 and MOD = 20, the function generates the series 0, 15, 10, 5 (or any other repeating series if the initial seed is other than 0). This is a poor selection of STEP and MOD because no initial seed will generate all of the numbers from 0 and MOD-1.
Your program will determine if choices of STEP and MOD will generate a uniform distribution of pseudo-random numbers.
seed(x+1) = [seed(x) + STEP] % MOD
where '%' is the modulus operator.
Such a function will generate pseudo-random numbers (seed) between 0 and MOD-1. One problem with functions of this form is that they will always generate the same pattern over and over. In order to minimize this effect, selecting the STEP and MOD values carefully can result in a uniform distribution of all values between (and including) 0 and MOD-1.
For example, if STEP = 3 and MOD = 5, the function will generate the series of pseudo-random numbers 0, 3, 1, 4, 2 in a repeating cycle. In this example, all of the numbers between and including 0 and MOD-1 will be generated every MOD iterations of the function. Note that by the nature of the function to generate the same seed(x+1) every time seed(x) occurs means that if a function will generate all the numbers between 0 and MOD-1, it will generate pseudo-random numbers uniformly with every MOD iterations.
If STEP = 15 and MOD = 20, the function generates the series 0, 15, 10, 5 (or any other repeating series if the initial seed is other than 0). This is a poor selection of STEP and MOD because no initial seed will generate all of the numbers from 0 and MOD-1.
Your program will determine if choices of STEP and MOD will generate a uniform distribution of pseudo-random numbers.
Input
Each line of input will contain a pair of integers for STEP and MOD in that order (1 <= STEP, MOD <= 100000).
Output
For each line of input, your program should print the STEP value right- justified in columns 1 through 10, the MOD value right-justified in columns 11 through 20 and either "Good Choice" or "Bad Choice" left-justified starting in column 25. The "Good Choice" message should be printed when the selection of STEP and MOD will generate all the numbers between and including 0 and MOD-1 when MOD numbers are generated. Otherwise, your program should print the message "Bad Choice". After each output test set, your program should print exactly one blank line.
Sample Input
3 515 2063923 99999
Sample Output
3 5 Good Choice 15 20 Bad Choice 63923 99999 Good Choice//HDU1014基础题//Uniform Generator//2017.05.25 by wyj#includeusing namespace std;int main(){int step, mod;int r, m, n;while (scanf("%d%d", &step, &mod) != EOF){m = mod;n = step;if (n > m){int t = n;n = m;m = t;}while (n != 0)//求最大公约数{r = m % n;m = n;n = r;}if (m == 1)printf("%10d%10d Good Choice\n\n", step, mod);elseprintf("%10d%10d Bad Choice\n\n", step, mod);}return 0;}
阅读全文
0 0
- hdu1014
- hdu1014
- hdu1014
- hdu1014
- hdu1014
- HDU1014
- HDU1014
- HDU1014
- HDU1014
- hdu1014(随机数)
- HDU1014 Uniform Generator
- HDU1014 ( Uniform Generator )
- hdu1014 Uniform Generator
- HDU1014:Uniform Generator
- hdu1014 Uniform Generator
- hdu1014 Uniform Generator
- hdu1014 Uniform Generator--哈希表水题
- hdu1014 Uniform Generator
- mysql_数据完整性
- 卡尔曼滤波算法分析
- HDU 4821 字符串哈希
- JavaScript的数组,函数,对象
- Elasticsearch之分析(analysis)和分析器(analyzer)。
- HDU1014
- 信息熵计算(自己编写的python代码,垃圾,高手绕道)
- OAuth2.0第三方授权
- 知道~ 做到
- bzoj1483[HNOI2009]梦幻布丁 链表+启发式合并
- 串口、COM口、UART口, TTL、RS-232、RS-485区别详解
- 归并排序与快速排序
- Faster RCNN 源码解析(3.3) -- proposal_layer.py
- ubuntu中pytesseract 安装与使用示例