#include<bits/stdc++.h>
using namespace std;
#ifdef LOCAL_DEBUG
  #include "LOCAL_DEBUG.hpp"
#endif
#define int long long

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];
    }
  }

  static int dp[11][501];
  dp[0][0] = 1;
  for(int i = 0; i < n; i++){
    for(int j = 0; j < m; j++){
      for(int k = 0; k + a[i][j] <= K; k++){
        dp[i+1][k + a[i][j]] |= dp[i][k];
      }
    }
  }

  int ans = 0;
  for(int i = K; i >= 0; i--){
    if(dp[n][i]){
      cout << K - i << endl;
      return 0;
    }
  }
  cout << -1 << endl;

  return 0;
}