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

#define REP(i,x,y) for(ll i=x; i<=y; i++)
#define BIT(t) ((long long 1) << t)
#define PER(i,y,x) for(ll i=y; i>=x; i--)
#define SIZE(v) ll(v.size())
#define vll vector<ll>
#define vvll vector<vector<ll>>
#define pll pair<ll,ll>
#define UNIQUE(v) v.erase( unique(v.begin(), v.end()), v.end() );
typedef long long ll;

ll dp[1000][1000] = {};

int main(){
        ll n, m,k ;
        cin >> n >> m >> k;
        dp[0][0] = 1;
        REP(i,1,n){
                REP(j,1,m){
                        ll x;
                        cin >> x;
                        REP(l,0,k){
                                if(l - x >= 0){
                                        dp[i][l] += dp[i-1][l-x];
                                }
                                
                        }
                }
        }
        ll ans = -1;
        PER(i,k,0){
                if(dp[n][i] >= 1){
                        cout << k - i << endl;
                        return 0;
                }
        }
        cout << -1 << endl;
        return 0;
}