Algorithms Shortest Common Supersequence suggest change

Implementation of Shortest Common Supersequence Problem in C

public class ShortestCommonSupersequence
{
    private static int Max(int a, int b)
    {
        return a > b ? a : b;
    }
    
    private static int Lcs(string x, string y, int m, int n)
    {
        var l = new int[m + 1, n + 1];
        for (var i = 0; i <= m; i++)
        {
            for (var j = 0; j <= n; j++)
            {
                if (i == 0 || j == 0) l[i, j] = 0;
                else if (x[i - 1] == y[j - 1]) l[i, j] = l[i - 1, j - 1] + 1;
                else l[i, j] = Max(l[i - 1, j], l[i, j - 1]);
            }
        }
        return l[m, n];
    }

    private static int Scs(string x, string y)
    {
        int m = x.Length, n = y.Length;
        int l = Lcs(x, y, m, n);
        return m + n - l;
    }

    public static int Main(string x, string y)
    {
        return Scs(x, y);
    }
}

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