import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int m = sc.nextInt();
        int k = sc.nextInt();
        TreeSet<Integer> current = new TreeSet<>();
        current.add(0);
        for (int i = 0; i < n; i++) {
            TreeSet<Integer> next = new TreeSet<>();
            for (int j = 0; j < m; j++) {
                int x = sc.nextInt();
                for (int y : current) {
                    if (x + y <= k) {
                        next.add(x + y);
                    }
                }
            }
            current = next;
        }
        if (current.size() == 0) {
            System.out.println(-1);
        } else {
            System.out.println(k - current.last());
        }
    }
}

class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}