#include <bits/stdc++.h>
using namespace std;
#define int long long
#define REP(i,n) for(int i = 0;i < (int)(n);i++)
#define RREP(i,n) for(int i = (int)n-1;i >= 0;i--)
#define FOR(i,s,n) for(int i = s;i < (int)n;i++)
#define RFOR(i,s,n) for(int i = (int)n-1;i >= s;i--)
#define ALL(a) a.begin(),a.end()
template<class T>inline bool CHMAX(T&a,T b){if(a<b){a = b;return true;}return false;}
template<class T>inline bool CHMIN(T&a,T b){if(a>b){a = b;return true;}return false;}
constexpr long long INF = 1e18;

signed main(){
	int N,M,K;
	cin>>N>>M>>K;
	vector<int>dp(K+1,0);
	dp[0]=1;
	REP(i,N){
		vector<int>ndp(K+1,0);
		REP(j,M){
			int t;
			cin>>t;
			REP(k,K+1){
				if(k+t>K)continue;
				ndp[k+t]|=dp[k];
			}
		}
		dp=ndp;
	}
	int ans = -1;
	REP(i,K+1)if(dp[i])CHMAX(ans,i);
	if(ans==-1)cout<<-1<<endl;
	else cout<<K-ans<<endl;
}