import java.util.ArrayList;
import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		new Main().run();
	}
	
	void run() {
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();
		int M=sc.nextInt();
		int K=sc.nextInt();
		int[][] A=new int[N][M];
		boolean[][] dp=new boolean[N+1][K+1];
		for(int i=0;i<A.length;++i) {
			for(int j=0;j<A[i].length;++j) {
				A[i][j]=sc.nextInt();
			}
		}
		dp[0][0]=true;
		for(int i=0;i<N;++i) {
			for(int cur=0;cur<=K;++cur) {
				if(!dp[i][cur])continue;
				for(int next=0;next<M;++next) {
					if(cur+A[i][next]<=K)
						dp[i+1][cur+A[i][next]]|=dp[i][cur];
				}
			}
		}
		int ans=-1;
		for(int i=1;i<=K;++i)if(dp[N][i])ans=Math.max(ans, i);
		System.out.println(ans==-1?-1:(K-ans));
	}
}