#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pb push_back
#define fi first
#define se second
typedef pair<ll,ll> P;
using VP = vector<P>; using VVP = vector<VP>;
using VI = vector<ll>; using VVI = vector<VI>; using VVVI = vector<VVI>;
const int inf=1e9+7;
const ll INF=1LL<<58;
const ll Mod=998244353;


int main(){
  int i,j;
  int n,m,k;
  cin>>n>>m>>k;
  int a[n][m];
  for(i=0;i<n;i++){
    for(j=0;j<m;j++) cin>>a[i][j];
  }
  VVI cm(n,VI(505,0));
  for(i=0;i<m;i++) cm[0][a[0][i]]=1;
  for(i=1;i<n;i++){
    for(j=0;j<m;j++){
      for(int l=0;l<=k;l++){
        if(l-a[i][j]>=0&&cm[i-1][l-a[i][j]]==1) cm[i][l]=1;
      }
    }
  }

  int ans=-1;
  for(i=1;i<=k;i++){
    if(cm[n-1][i]==1) ans=i;
  }
  if(ans==-1) cout<<-1<<endl;
  else cout<<k-ans<<endl;
}