#include<bits/stdc++.h>
using namespace std;
int main()
{
int t;
double d, sum;
int j=0;
scanf(“%d”,&t);
while(t–)
{
sum = 0;
for(int i=0; i<12; i++)
{
scanf(“%lf”,&d);
sum = sum + d;
}
double avg = sum/12.00;
printf(“%d $”,++j);
if(avg<=999999.0 && avg>999.0)
{
int a = avg/1000.0;
printf(“%d,”,a);
avg = fmod(avg,1000.0);
}
printf(“%.2lf\n”,avg);
}
return 0;
}
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