This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
vector<array<int, 3>> a(n);
for (int i = 0; i < n; i++) {
int x, y, z;
cin >> x >> y >> z;
a[i] = {x, y, z};
}
auto get = [&](int i, int j, int k) -> int {
array<int, 3> mx;
mx[0] = max({a[i][0], a[j][0], a[k][0]});
mx[1] = max({a[i][1], a[j][1], a[k][1]});
mx[2] = max({a[i][2], a[j][2], a[k][2]});
int cnti = 0, cntj = 0, cntk = 0;
for (int t = 0; t < 3; t++) {
cnti += (mx[t] == a[i][t]);
cntj += (mx[t] == a[j][t]);
cntk += (mx[t] == a[k][t]);
}
if (array<int, 3>{cnti, cntj, cntk} != array<int, 3>{1, 1, 1}) return -1;
return mx[0] + mx[1] + mx[2];
};
int res = -1;
for (int i = 0; i < n; i++) {
for (int j = i + 1; j < n; j++) {
for (int k = j + 1; k < n; k++) {
res = max(res, get(i, j, k));
}
}
}
cout << res << '\n';
}
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