#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include "temp.cpp"
#include <cstdio>
using namespace std;
#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif
#define sz(x) (int((x).size()))
#define len(x) (int)x.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()
#define uniq(x) x.resize(unique(all(x)) - x.begin());
#define blt(x) __builtin_popcount(x)
#define pb push_back
#define popf pop_front
#define popb pop_back
void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(deque <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define nl '\n'
// for grid problems
int dx[8] = {-1,0,1,0,1,-1,1,-1};
int dy[8] = {0,1,0,-1,1,1,-1,-1};
// lowest / (1 << 17) >= 1e5 / (1 << 18) >= 2e5 / (1 << 21) >= 1e6
void fastIO() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr); cout.tie(nullptr);
}
// file in/out
void setIO(string str = "") {
fastIO();
if (str != "") {
freopen((str + ".in").c_str(), "r", stdin);
freopen((str + ".out").c_str(), "w", stdout);
}
}
// Indexed Set
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const int N = 150005, M = 4004;
int x[N], y[N], z[N];
int n, mat[M][M];
void solve_() {
cin >> n;
vector<pair<long long, int>> xs, ys, zs;
vector<pair<pair<long long, long long>, int>> vec;
vector<long long> values;
for(int i = 1; i <= n; i++) {
cin >> x[i] >> y[i] >> z[i];
values.push_back(x[i]);
values.push_back(y[i]);
values.push_back(z[i]);
vec.push_back({{x[i], y[i]}, z[i]});
}
// sort(all(vec));
// uniq(vec);
sort(all(values));
uniq(values);
n = sz(vec);
auto get = [&](long long val)-> int {
return lower_bound(all(values), val) - values.begin() + 1;
};
for(int i = 1; i <= n; i++) {
x[i] = get(vec[i - 1].first.first);
y[i] = get(vec[i - 1].first.second);
z[i] = get(vec[i - 1].second);
if(x[i] < M && y[i] < M) {
mat[x[i]][y[i]] = max(mat[x[i]][y[i]], vec[i - 1].second);
}
//
xs.emplace_back(x[i], i);
ys.emplace_back(y[i], i);
zs.emplace_back(z[i], i);
}
for(int i = 0; i < M; i++) {
for(int j = 0; j < M; j++) {
if(i - 1 >= 0) {
mat[i][j] = max(mat[i][j], mat[i - 1][j]);
}
if(j - 1 >= 0) {
mat[i][j] = max(mat[i][j], mat[i][j - 1]);
}
}
}
sort(rall(xs));
sort(rall(ys));
sort(rall(zs));
assert(sz(xs) == n);
long long answ = -1;
for(int i = 0; i < n; i++) {
for(int j = 0; j < n; j++) {
int xx = xs[i].second, yy = ys[j].second;
if(x[xx] <= x[yy]) {
continue;
}
if(y[yy] <= y[xx]) {
continue;
}
int mx_z = 0;
if(x[xx] && y[yy]) {
mx_z = mat[x[xx] - 1][y[yy] - 1];
}
if(mx_z && mx_z > z[xx] && mx_z > z[yy]) {
answ = max(answ, values[x[xx]] + values[y[yy]] + mx_z);
}
}
}
if(n > 10) {
assert(answ != -1);
}
cout << answ << '\n';
}
int main() {
setIO();
auto solve = [&](int test_case)-> void {
while(test_case--) {
solve_();
}
};
int test_cases = 1;
// cin >> test_cases;
solve(test_cases);
return 0;
}
Compilation message
team.cpp: In function 'void setIO(std::string)':
team.cpp:64:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
64 | freopen((str + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
team.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
65 | freopen((str + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
91 ms |
63036 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
91 ms |
63036 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
87 ms |
63052 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
87 ms |
63052 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
87 ms |
63052 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
87 ms |
63052 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
91 ms |
63036 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
