using System;
class nNumbers
{
static void Main()
int i = 0;
double sum = 0.0;
while (i < 3)
int n = int.Parse(Console.ReadLine());
for (int b = 0; b < n; b++ )
double nNums = double.Parse(Console.ReadLine());
sum += nNums;
}
Console.WriteLine(sum);
sum = 0;
i++;