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……

#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <cstring>
#include <string>
#include <set>
#include <map>
#include <list>
#include <stack>
#include <queue>
#include <vector>
#include <algorithm>
#include <iostream>
using namespace std;
#define ll long long
#define inf 1e9
const long maxn=1e5+5;
const ll mod=1e9+7;

double p[10]={0.005,0.01,0.02,0.05};
double q[10];

int main()
{
    long i;
    for (i=0;i<4;i++)
        q[i]=1-p[i];
    for (i=0;i<4;i++)
    {
        //q^t<0.5 t<log(0.5)/log(q) q<1,log(q)<>0
        printf("percentage = %.4f
",p[i]);
        printf("=0.5 times = %.4f
",log(1-0.5)/log(q[i]));
        printf("=0.8 times = %.4f
",log(1-0.8)/log(q[i]));
        printf("=0.9 times = %.4f
",log(1-0.9)/log(q[i]));
        printf("
");
    }
    return 0;
}