Submission #922449

#	Time	Username	Problem	Language	Result	Execution time	Memory
922449		huutuan	Team Contest (JOI22_team)	C++14	100 / 100	1545 ms	99364 KiB

team

#include<bits/stdc++.h>

using namespace std;

#define int long long
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define isz(x) ((int)x.size())
#define sumof(x) accumulate(all(x), 0ll)

const int N=15e4+10;
int n, x[N], y[N], z[N];
map<pair<int, int>, set<int>> xy, yz, zx;
multiset<int> sx, sy, sz;

void solve(){
   cin >> n;
   for (int i=1; i<=n; ++i){
      cin >> x[i] >> y[i] >> z[i];
      xy[{x[i], y[i]}].insert(i);
      yz[{y[i], z[i]}].insert(i);
      zx[{z[i], x[i]}].insert(i);
      sx.insert(x[i]);
      sy.insert(y[i]);
      sz.insert(z[i]);
   }
   while (sx.size()){
      int mx=*sx.rbegin();
      int my=*sy.rbegin();
      int mz=*sz.rbegin();
      bool stop=1;
      if (xy.count({mx, my}) && xy[{mx, my}].size()){
         for (int i:xy[{mx, my}]){
            sx.erase(sx.find(x[i]));
            sy.erase(sy.find(y[i]));
            sz.erase(sz.find(z[i]));
            yz[{y[i], z[i]}].erase(i);
            zx[{z[i], x[i]}].erase(i);
         }
         xy[{mx, my}].clear();
         stop=0;
      }
      if (yz.count({my, mz}) && yz[{my, mz}].size()){
         for (int i:yz[{my, mz}]){
            sx.erase(sx.find(x[i]));
            sy.erase(sy.find(y[i]));
            sz.erase(sz.find(z[i]));
            zx[{z[i], x[i]}].erase(i);
            xy[{x[i], y[i]}].erase(i);
         }
         yz[{my, mz}].clear();
         stop=0;
      }
      if (zx.count({mz, mx}) && zx[{mz, mx}].size()){
         for (int i:zx[{mz, mx}]){
            sx.erase(sx.find(x[i]));
            sy.erase(sy.find(y[i]));
            sz.erase(sz.find(z[i]));
            xy[{x[i], y[i]}].erase(i);
            yz[{y[i], z[i]}].erase(i);
         }
         zx[{mz, mx}].clear();
         stop=0;
      }
      if (stop) break;
   }
   if (sx.size()) cout << (*sx.rbegin()+*sy.rbegin()+*sz.rbegin());
   else cout << -1;
}

int32_t main(){
   ios_base::sync_with_stdio(false);
   cin.tie(nullptr);
   int ntests=1;
   // cin >> ntests;
   for (int i=1; i<=ntests; ++i) solve();
   return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 29 / 29
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 27 / 27