#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int main()
{
double temp;
while(scanf("%lf",&temp)!=EOF)
{
double sum=0;
sum+=temp;
int i;
for(i=0;i<11;i++)
{
scanf("%lf",&temp);
sum+=temp;
}
sum/=12.0;
printf("$%.2lf\n",sum);
}
return 0;
}
/**************************************************************
Problem: 1141
User: cust123
Language: C++
Result: Accepted
Time:0 ms
Memory:1020 kb
****************************************************************/
题目1141:Financial Management
