#pragma region Macros

#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;
// using namespace __gnu_cxx;

#define TO_STRING(var) # var
#define pb emplace_back
#define int ll
#define endl '\n'

using ll = long long;
using ld = long double;
const ld PI = acos(-1);
const ld EPS = 1e-10;
const int INF = 1 << 30;
const ll INFL = 1LL << 62;
// const int MOD = 998244353;
const int MOD = 1000000007;

int ceil(int x, int y) {return (x > 0 ? (x + y - 1) / y : x / y);}
int POW(int x, int y) {
    if (y != (int)(y) or y < 0 or x != 0 && x != 1 && y > 64) {cout << "Error" << endl;return 0;}
    if (y == 0) return 1;
    if (y % 2 == 0) return POW(x * x, y / 2);
    return x * POW(x, y - 1);
}

__attribute__((constructor))
void constructor() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(15);
}

#pragma endregion

signed main() {
    int N, M, K;
	cin >> N >> M >> K;

	vector<vector<int>> A(N, vector<int>(M));
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < M; j++) {
			cin >> A[i][j];
		}
	}

	vector<vector<vector<int>>> dp(N + 1, vector<vector<int>>(M, vector<int>(K + 101)));
	for (int i = 0; i < M; i++) {
		dp[0][i][0] = true;
	}

	for (int i = 0; i < N; i++) {
		for (int j = 0; j < M; j++) {
			for (int k = 0; k <= K; k++) {
				if (dp[i][j][k] == false) continue;
				for (int l = 0; l < M; l++) {
					dp[i + 1][l][k + A[i][j]] = true;
				}
			}
		}
	}

	int ans = K;
	for (int i = 0; i < M; i++) {
		for (int j = 0; j <= K; j++) {
			if (dp[N][i][j]) ans = min(ans, K - j);
		}
	}
	if (ans == K) cout << - 1 << endl;
	else cout << ans << endl;

}