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답안 #724520

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
724520 2023-04-15T13:16:08 Z MohammadAghil Team Contest (JOI22_team) C++17
0 / 100
 3 ms 340 KB 
#include <bits/stdc++.h>
using namespace std;
#define rep(i,l,r) for(int i = (l); i < (r); i++)
#define per(i,r,l) for(int i = (r); i >= (l); i--)
#define all(x) begin(x), end(x)
#define sz(x) (int)size(x)
#define pb push_back
#define ff first
#define ss second
typedef long long ll;
typedef pair<int, int> pp;

void dbg(){
     cerr << endl;
}
template<typename H, typename... T> void dbg(H h, T... t){
     cerr << h << ", ";
     dbg(t...);
}

void IOS(){
     cin.tie(0) -> sync_with_stdio(0);
     #ifndef ONLINE_JUDGE
          freopen("inp.txt", "r", stdin);
          freopen("out.txt", "w", stdout);
          #define er(...) cerr << __LINE__ << " <" << #__VA_ARGS__ << ">: ", dbg(__VA_ARGS__)
     #else
          #define er(...) 0
     #endif
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll mod = 998244353, maxn = 5e5 + 5, lg = 21, inf = ll(1e9) + 5;

struct Fen{
     vector<int> fen;
     Fen(){}
     Fen(int n){
          fen.assign(n + 1, -inf);
     }
     void upd(int i, int k){
          for(i++; i < sz(fen); i += i&-i) fen[i] = max(fen[i], k);
     }
     int get(int i){
          int res = -inf;
          for(i++; i; i -= i&-i) res = max(res, fen[i]);
          return res;
     }
} prf, suf;

int n, x[maxn], y[maxn], z[maxn];
int X = -1, Y = -1, id;
map<int, int> mp;

multiset<pp> s;

void add(int x, int y){
     er(x, y);
     // for(auto[x, y]: s){
     //      er(x, y);
     // }
     vector<pp> del;
     auto it = s.lower_bound(pp(x, -1));
     while(it != begin(s)){
          it--;
          if(it->ss <= y) break;
          del.pb(*it);
     }
     auto it2 = s.upper_bound(pp(x, inf));
     while(it2 != end(s)){
          if(it2->ss >= y) break;
          del.pb(*it2);
          it2++;
     }
     auto add2 = [&](int x, int y){
          er(x, y);
          X = max(X, x), Y = max(Y, y);
          prf.upd(mp[x], y);
          suf.upd(id-mp[x]-1, -y);
     };
     if(del.empty()){
          if(prf.get(mp[x]-1) > y) add2(x, y);
          else {
               if(-suf.get(id-1-mp[x]-1) < y) add2(x, y);
               else s.insert({x, y});
          }
     } else{
          add2(x, y);
          for(auto p: del){
               // er(p.ff, p.ss);
               auto it = s.find(p);
               add2(p.ff, p.ss);
               s.erase(it);
          }
     }
}

int slv1(){
     s.clear(), X = Y = -1, mp.clear();
     map<int, vector<pp>> mpp;
     rep(i,0,n){
          mpp[z[i]].pb({x[i], y[i]});
          mp[x[i]] = 0;
     }
     for(auto&c: mp) c.ss = id++;
     prf = Fen(id);
     suf = Fen(id);
     int ans = -1;
     for(auto[Z, v]: mpp){
          for(auto[x, y]: v){
               if(X > x && Y > y){
                    ans = max(ans, Z + X + Y);
               }
          }
          for(auto[x, y]: v){
               add(x, y);
          }
     }
     return ans;
}


int main(){ IOS();
     cin >> n;
     rep(i,0,n){
          cin >> x[i] >> y[i] >> z[i];
     }
     cout << slv1() << '\n';
     return 0;
}

Compilation message

team.cpp: In function 'void IOS()':
team.cpp:24:18: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |           freopen("inp.txt", "r", stdin);
      |           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
team.cpp:25:18: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |           freopen("out.txt", "w", stdout);
      |           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -