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;
using ll = long long;
using ull = unsigned long long;
using lld = long double;
void solve()
{
int n;
cin >> n;
vector<array<int,3>> a(n);
for (int i = 0; i < n; i++)
{
cin >> a[i][0]>>a[i][1]>>a[i][2];
}
sort(a.begin(),a.end());
int ans = -1;
priority_queue<pair<int,int>> pqy,pqz;
vector<pair<int,int>> curry,currz;
int l = 0;
for(int i=0; i<n; i++)
{
priority_queue<pair<int,int>> temppqy,temppqz;
if(a[i][0]!=a[l][0])
{
while(!curry.empty())
{
pqy.push(curry.back());
pqz.push(currz.back());
currz.pop_back();
curry.pop_back();
}
l = i;
}
curry.push_back({a[i][1],i});
currz.push_back({a[i][2],i});
while(!pqy.empty() && (pqy.top().second==pqz.top().second))
{
temppqy.push(pqy.top());
temppqz.push(pqz.top());
pqy.pop(); pqz.pop();
}
if(!pqy.empty())
{
if(pqy.top().first>a[i][1] && pqz.top().first>a[i][2])
ans = max(ans, a[i][0] + pqy.top().first + pqz.top().first);
temppqy.push(pqy.top());
temppqz.push(pqz.top());
}
swap(temppqy,pqy);
swap(temppqz,pqz);
}
cout<<ans<<"\n";
}
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
// #ifndef ONLINE_JUDGE
// freopen("error.txt", "w", stderr);
// #endif
int tt = 1;
// cin >> tt;
while (tt--)
{
solve();
}
}
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