#include "bits/stdc++.h"
#define REP(i, n) for(int i = 0; i < int(n); i++)
#define FOR(i,n,m) for(int i = int(n); i < int(m); i++)
using namespace std;
typedef long long ll;
const int MOD = 1e9 + 7;
const int INF = 1e9 + 6;
const ll LLINF = 1e18 + 1;

int main() {
    int n, m,k; cin >> n >> m >> k;
    vector<vector<int>> a(n, vector<int>(m));
    REP(i, n) REP(j, m) cin >> a[i][j];
    // dp[i][j] : iまででj円つくれるか
    vector<vector<bool>> dp(n+1, vector<bool>(k+1,false));
    dp[0][0] = true;
    REP(i, n) {
        REP(j, m) {
            REP(l, k+1) {
                if (l - a[i][j] >= 0 && dp[i][l - a[i][j]]) {
                    dp[i + 1][l] = true;
                }
            }
        }
    }
    for (int i = k; i >= 0; i--) {
        if (dp[n][i]) {
            cout << k - i << endl;
            break;
        }
        else if (i == 0) {
            cout << -1 << endl;
        }
    }
    return 0;
}