#include "bits/stdc++.h"
using namespace std;

int main() {
	long long N, M, K;
	cin >> N >> M >> K;
	vector<vector<long long> > A(N, vector<long long>(M));
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < M; j++) {
			cin >> A[i][j];
		}
	}
	vector<vector<bool> > DP(N + 1, vector<bool>(K + 1, false));
	DP[0][0] = true;
	for (int i = 0; i < N; i++) {
		for (int j = 0; j <= K; j++) {
			if (DP[i][j]) {
				for (int k = 0; k < M; k++) {
					if (j + A[i][k] <= K) DP[i + 1][j + A[i][k]] = true;
				}
			}
		}
	}
	for (int i = K; i >= 0; i--) {
		if (DP[N][i]) {
			cout << K - i << endl;
			return 0;
		}
	}
	cout << -1 << endl;
}