#define N 7
long sum(long a[N][N])
{
    int i, j;
    long s = 0;
    for (i = 0; i < N; i++)
        for (j = 0; j < N; j++)
            s += a[i][j];
    return s;
}

long getij(long a[N][N], int i, int j)
{
    return a[i][j];
}