Type summ_diamond_1(Type arr[Size][Size])
{
    Type res = 0;

    for (size_t i=0; i<Half; ++i)
    {
        for (size_t j=Half-i; j<=Half+i; ++j)
        {
            res += arr[i][j];
            res += arr[Size-i-1][j];
        }
    }

    for (size_t i=0; i<Size; ++i)
    {
        res += arr[Half][i];
    }

    return res;
}

Type summ_diamond_1a(Type arr[Size][Size])
{
    Type res = 0;

    for (size_t i=0; i<Half; ++i)
    {
        for (size_t j=Half-i; j<=Half+i; ++j)
        {
            res += arr[i][j];
        }
    }

    for (size_t i=0; i<=Half; ++i)
    {
        size_t const ii = Size-i-1;
        for (size_t j=Half-i; j<=Half+i; ++j)
        {
            res += arr[ii][j];
        }
    }

    return res;
}

Type summ_diamond_1b(Type arr[Size][Size])
{
    Type res = 0;

    for (size_t i=0; i<Half; ++i)
    {
        for (size_t j=Half-i; j<=Half+i; ++j)
        {
            res += arr[i][j];
        }
    }

    for (size_t i=0; i<=Half; ++i)
    {
        for (size_t j=i; j<=Size-i-1; ++j)
        {
            res += arr[i+Half][j];
        }
    }

    return res;
}