Submission #933779

#	Time	Username	Problem	Language	Result	Execution time	Memory
933779		nguyentunglam	Chameleon's Love (JOI20_chameleon)	C++17	40 / 100	16 ms	2900 KiB

chameleon

#include "chameleon.h"
#include <vector>
#include<bits/stdc++.h>
 
using namespace std;
 
namespace {
const int NN = 1e3 + 10;
 
vector<int> adj[NN];
 
bool g[NN][NN];
 
int love[NN][NN];
 
void solve(int n) {
  for(int i = 1; i <= 2 * n; i++) for(int j = i + 1; j <= 2 * n; j++) {
    if (Query({i, j}) == 1) {
      adj[i].push_back(j);
      adj[j].push_back(i);
    }
  }
  int m = 4, mx = 0;
  for(int i = 1; i <= 2 * n; i++) {
    int x = -1;
    for(int j = 0; j < m; j++) if (!g[j][i]) {
      x = j;
      break;
    }
    assert(x >= 0);
    mx = max(mx, x);
    for(int &v : adj[i]) g[x][v] = 1;
  }
  assert(mx <= 3);
//  cerr << mx << endl;
  for(int i = 1; i <= 2 * n; i++) {
    assert(adj[i].size() == 1 || adj[i].size() == 3);
    if (adj[i].size() == 1) continue;
    for(int &j : adj[i]) {
      vector<int> tmp;
      tmp.push_back(i);
      for(int &k : adj[i]) if (k != j) tmp.push_back(k);
      if (Query(tmp) == 1) {
        love[i][j] = 1;
      }
    }
  }
  for(int i = 1; i <= 2 * n; i++) {
    for(int &j : adj[i]) if (i < j && love[i][j] + love[j][i] == 0) {
      Answer(i, j);
    }
  }
}
}  // namespace
 
 
void Solve(int n) {
  ::solve(n);
}

• Subtask 1: 0 / 4
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36