// Flip Columns SRBD Coding interview
#include<bits/stdc++.h>
using namespace std;

class solution{

    public:
        int toggle(int n, int m, int k)
        {
            int v[15];
            memset(v, 0, sizeof(v));
            map<int, int>mp;
            for(int i=0; i<n; i++)// row
            {
                for(int j=0; j<m; j++)// col
                {
                    int x;
                    cin >> x;
                    if(x==1)
                    {
                        v[i]=v[i] | (1<<j); // unique value for a row if all of the 1 position in simillar poisition it will be same like if first row having 1 0 0 and third row 1 0 0 their value will be same
                    }
                }
            }

            for(int i=0; i<n; i++)
            {
                mp[v[i]]++;// counting frequency how many simillar value on v array like in input 1st and third one frequency will be same 2nd one will be diffrent
            }
            int mx=0;
            for(auto & [a, b] : mp) //[key, vlaue] in key unique number for specific row and value is how many times it occured
            {
                int x=m-__builtin_popcount(a); // counting how many zero in one row

                if(x<=k and (k-x)%2==0)
                {
                    mx=max(mx, b);
                }
            }

            /*for(auto it=mp.begin(); it!=mp.end(); it++)
            {
                int a=it->first;
                int b=it->second;
                int x=m-__builtin_popcount(a); // counting how many zero in one row

                if(x<=k and (k-x)%2==0)
                {
                    mx=max(mx, b);
                }
            }*/

            return mx;
        }


};
int main()
{
    solution sol;

    int n, m, k;
    cin >> n >> m >> k;

    cout << sol.toggle(n, m, k) << endl;

    return 0;
}