关于打比赛总是拿不到衣服(呵呵)

 

 

看来不是脸的问题,还是自己打比赛太少了……

 

 1 #include <cstdio>
 2 #include <cstdlib>
 3 #include <cmath>
 4 #include <cstring>
 5 #include <string>
 6 #include <set>
 7 #include <map>
 8 #include <list>
 9 #include <stack>
10 #include <queue>
11 #include <vector>
12 #include <algorithm>
13 #include <iostream>
14 using namespace std;
15 #define ll long long
16 #define inf 1e9
17 const long maxn=1e5+5;
18 const ll mod=1e9+7;
19 
20 double p[10]={0.005,0.01,0.02,0.05};
21 double q[10];
22 
23 int main()
24 {
25     long i;
26     for (i=0;i<4;i++)
27         q[i]=1-p[i];
28     for (i=0;i<4;i++)
29     {
30         //q^t<0.5 t<log(0.5)/log(q) q<1,log(q)<>0
31         printf("percentage = %.4f\n",p[i]);
32         printf("=0.5 times = %.4f\n",log(1-0.5)/log(q[i]));
33         printf("=0.8 times = %.4f\n",log(1-0.8)/log(q[i]));
34         printf("=0.9 times = %.4f\n",log(1-0.9)/log(q[i]));
35         printf("\n");
36     }
37     return 0;
38 }

 

posted @ 2018-04-28 20:18  congmingyige  阅读(154)  评论(0编辑  收藏  举报