#include <fstream>
using namespace std;
ifstream in ("livada.in");
ofstream out ("livada.out");
int main()
{
    int n,m,i,j,ant,val,p,ctr,maxx=0,nr;
    in>>m>>n>>p;
    for (i=1;i<=m;i++)
    {
        ant=-1;
        ctr=0;
        for (j=1;j<=n;j++)
        {
            in>>nr;
            if (j==1)
                {ant=nr;ctr++;}
            if (nr==ant && j!=1)
                ctr++;
            else
            {
                ctr=1;
            }
            if (ctr>maxx)
                maxx=ctr;
            ant=nr;
        }
    }
    out<<3<<'\n'<<maxx;
    return 0;
}