#pragma once

#include <bits/stdc++.h>

#define M_PI       3.14159265358979323846   // pi

using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> VI;
typedef pair<ll, ll> P;
typedef tuple<ll, ll, ll> t3;
typedef tuple<ll, ll, char, ll> t4;

#define rep(a,n) for(ll a = 0;a < n;a++)
#define repi(a,b,n) for(ll a = b;a < n;a++)

const ll mod = 1000000007;

int main(void)
{
	ll n, m, k;
	cin >> n >> m >> k;
	vector<vector<ll>> as(n, vector<ll>(m, 0));
	rep(i, n) {
		rep(j, m) cin >> as[i][j];
	}
	vector<std::bitset<501>> bits(n+1);
	bits[0].set(0);
	rep(i, n) {
		rep(j, m) {
			bits[i + 1] |= (bits[i] << as[i][j]);
		}
	}
	ll r = -1;
	rep(i, k + 1) {
		if (bits[n][i]) {
			r = max(r, i);
		}
	}
	if (r < 0) cout << -1 << endl;
	else cout << k-r << endl;
	return 0;
}