#define _USE_MATH_DEFINES

#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <cmath>
#include <cstring>
#include <algorithm>
#include <vector>
#include <queue>
#include <map>
#include <set>
#include <unordered_map> 
#include <unordered_set>
#include <functional>

using namespace std;

typedef pair<long long int, long long int> P;
typedef tuple<int, int, int> T;

long long int INF = 1e18;
long long int MOD = 1e9 + 7;

bool memo[1000];

int main(){
	int N, M, K;
	cin >> N >> M >> K;
	memo[K] = true;
	for(int i = 0; i < N; i++){
		bool memo2[1000] = {};
		for(int j = 0; j < M; j++){
			int A;
			cin >> A;
			if(j == 0){
				K -= A;
			}
			for(int k = A; k <= 500; k++){
				memo2[k - A] = (memo2[k - A] || memo[k]);
			}
		}
		swap(memo, memo2);
	}
	if(K < 0){
		cout << -1 << endl;
	}else{
		for(int i = 0; i <= K; i++){
			if(memo[i]){
				cout << i << endl;
				break;
			}
		}
	}
	return 0;
}