#include <bits/stdc++.h>
#define int long long
signed main() {
int n, k, c;
std::cin >> n >> k >> c;
std::vector<std::vector<int>> a(n, std::vector<int>(k));
for(int i = 0; i < n; i++) {
for(int j = 0; j < k; j++) {
std::cin >> a[i][j];
}
}
std::vector<int> ans;
for(int i = 0; i < n; i++) {
for(int j = i + 1; j < n; j++) {
int sum = 0;
std::vector<int> mx(k);
for(int w = 0; w < k; w++) {
mx[w] = std::max(mx[w], a[i][w]);
mx[w] = std::max(mx[w], a[j][w]);
}
for(int w = 0; w < k; w++) {
sum += mx[w];
}
ans.push_back(sum);
}
}
std::sort(ans.begin(), ans.end());
std::reverse(ans.begin(), ans.end());
std::cout << ans[--c];
}
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