3106. 骰子概率

定义一个函数 probability(n,m), 用 monte carlo simulation 方法计算：一次同时扔 n(1<n<=6) 个骰子（数字 1-6），至少有 m(1<m<=n) 个骰子的点数相同的概率。保留 2 位小数。

//* Specification of probability *

double probability(int n,int m);

/* PreCondition:

n,m are two integers, 1<n<=6, 1<m<=n

PostCondition:

return the probability according to problem description

*/

只需按要求写出函数定义，并使用给定的测试程序测试你所定义函数的正确性。

不要改动测试程序。

测试正确后，将测试程序和函数定义一起提交。

/*********/

/ /

/ DON'T MODIFY main function ANYWAY! /

/ /

/*********/

include

//* Specification of probability *

double probability(int n,int m)

/* PreCondition:

n,m are two integers, 1<n<=6, 1<m<=n

PostCondition:

return the probability according to problem description

*/

{ //TODO: your function definition

}

/*********/

int main()

{ int n,m;

scanf(“%d%d”,&n,&m);

//* probability is called here ***

printf(“%.2f\n”,probability(n,m));

//********

return 0;

}