#include <iostream>
const int N = 12;
int main()
{
int mas[N];
int sum = 0;
for (int i = 0; i < N; i++)
{
std::cout << "mas[" << i << "] = ";
std::cin >> mas[i];
if (mas[i] >= 3 && mas[i] < 13)
sum += mas[i];
}
std::cout << "Sum = " << sum;
std::cin.get();
return 0;
}