Submission #836911

#	Time	Username	Problem	Language	Result	Execution time	Memory
836911		Ozy	Minerals (JOI19_minerals)	C++17	40 / 100	16 ms	3828 KiB

minerals

#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i = (a); i <= (b); i++)
#define repa(i,a,b) for(int i = (a); i >= (b); i--)
#define lli long long int
#define debug(a) cout << #a << " = " << a << endl
#define debugsl(a) cout << #a << " = " << a << ", "
#define pll pair<lli,lli>

#define MAX 1000000

struct x {
  vector<lli> izq;
  vector<lli> der; 
};

lli n,pas,a,cont;
vector<pll> parejas;
queue<x> rangos;
lli vis[MAX+2];

void Solve(int N) {
  n = N;
  x ran;

  //inicializo las mitades izq y der
  pas = 0;
  rep(i,1,2*n) {
    a = Query(i);
    if (a > pas) ran.izq.push_back(i);
    else ran.der.push_back(i); 
    pas = a; 
  }
  rep(i,1,2*n) Query(i);

  //mientras exista que dividir, voy y a terminarme la cola y meterlo en mis resultados
  rangos.push(ran);
  while (!rangos.empty()) {

    ran = rangos.front();
    rangos.pop();

    //debug(ran.izq.size());
    //for(auto act : ran.izq) debugsl(act);
    //cout << endl;
    //for(auto act : ran.der) debugsl(act);
    //cout << endl;

    if (ran.izq.size() == 1) {
      parejas.push_back({ran.izq[0], ran.der[0]});
      continue;
    } 
    if(ran.izq.size() == 2) {
      Query(ran.izq[0]);
      a = Query(ran.der[0]);
      if (a == 2) {
        parejas.push_back({ran.izq[0], ran.der[1]});
        parejas.push_back({ran.izq[1], ran.der[0]});
      }
      else {
        parejas.push_back({ran.izq[0], ran.der[0]});
        parejas.push_back({ran.izq[1], ran.der[1]});
      }
      Query(ran.izq[0]);
      Query(ran.der[0]);
      continue;
    }

    lli terc = (ran.izq.size())/3;
    if (ran.izq.size()%3 == 2) terc++;

    x r1,r2,r3;

    rep(i,0,terc-1) {
      a = Query(ran.izq[i]);
      r1.izq.push_back(ran.izq[i]);
    }

    pas = a;
    for(auto act : ran.der) {
      vis[act] = 0;
      a = Query(act);
      if(a == pas) {
        Query(act);
        r1.der.push_back(act);
        vis[act] = 1;
      }
      pas = a;
    }
    //correct0

    //ahora me toca llenar los r2 y r3
    rep(i,0,terc-1) Query(ran.izq[i]);
    cont = 1;
    for(auto act : ran.der) {
      if(vis[act] == 1) continue;
      if (cont > terc) r3.der.push_back(act);
      else {
        r2.der.push_back(act);
        Query(act);
      }
      cont++;
    }

    pas = r3.der.size();

    //debugsl(terc);
    //debug(pas);

    rep(i,terc,ran.izq.size()-1) {
      a = Query(ran.izq[i]);
      if(a == pas) r3.izq.push_back(ran.izq[i]);
      else r2.izq.push_back(ran.izq[i]);
      Query(ran.izq[i]);
    }
    for(auto act : r3.der) Query(act);

    rangos.push(r1);
    rangos.push(r2);
    rangos.push(r3);
  }

  for (auto act : parejas) Answer(act.first,act.second);
  return;
}

Compilation message (stderr)

minerals.cpp: In function 'void Solve(int)':
minerals.cpp:4:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define rep(i,a,b) for(int i = (a); i <= (b); i++)
      |                                       ^
minerals.cpp:111:5: note: in expansion of macro 'rep'
  111 |     rep(i,terc,ran.izq.size()-1) {
      |     ^~~

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 0 / 30
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 10