1 #include<iostream>
 2 #include<stdio.h>
 3 using namespace std;
 4 
 5 int main()
 6 {
 7     int pi[1001],ti[1001];
 8     double temp,Maxtime,Max,Time;
 9     int t,n,i,sum;
10     scanf("%d",&t);
11     while(t--)
12     {
13         scanf("%d",&n);
14         for(i=1;i<=n;i++)
15         {
16             scanf("%d",&pi[i]);
17         }
18         ti[0]=0;
19         for(i=1;i<=n;i++)
20         {
21             scanf("%d",&ti[i]); 
22         }
23         sum=0;
24         Max=0;
25         Maxtime=0;
26         for(i=1;i<=n;i++)
27         {
28             sum+=pi[i];
29             temp=(double)sum/(i);//当前的平均价格
30             if(Maxtime<(ti[i]-ti[i-1]))
31             {
32                 Maxtime=ti[i]-ti[i-1];
33             }
34             if(i==n)
35             {
36                 if(temp>Max)
37                 {
38                     Max=temp;
39                     Time=Maxtime;
40                 }
41                 continue;
42             }
43             if(Maxtime<(ti[i+1]-ti[i])&&temp>Max)
44             {
45                 Max=temp;
46                 Time=Maxtime;
47             }
48         }
49         printf("%.6lf %.6lf\n",Time,Max);
50     }
51     return 0;
52 }