oj.uz

Submission #217308

# Submission time Handle Problem Language Result Execution time Memory
217308 2020-03-29T11:49:37 Z fedoseevtimofey Chameleon's Love (JOI20_chameleon) C++14
40 / 100
 45 ms 2808 KB 
#include "chameleon.h"
#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <stack>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <algorithm>
#include <random>
#include <iomanip>
#include <functional>
#include <cassert>

using namespace std;

typedef long long ll;

void Solve(int n) {
  vector <vector <int>> g(2 * n);
  
  int cnt_qr = 0;
  map <vector <int>, int> ans;
  function <int(vector <int>)> my_query = [&] (const vector <int> &p) {
    vector <int> a = p;
    sort(a.begin(), a.end());
    for (int &x : a) ++x;
    if (!ans.count(a)) {
      ++cnt_qr;
      ans[a] = Query(a);
    }
    return ans[a];
  };
  function <void(int, vector <int>)> rec = [&] (int v, vector <int> a) {
    if (a.size() == 1) {
      if (my_query({v, a[0]}) == 1) {
        g[v].push_back(a[0]);
        g[a[0]].push_back(v);
      }
    } else {
      int m = a.size() / 2;
      vector <int> b, c;
      for (int i = 0; i < m; ++i) b.push_back(a[i]);
      for (int i = m; i < (int)a.size(); ++i) c.push_back(a[i]);
      b.push_back(v);
      c.push_back(v);
      if (my_query(b) != (int)b.size() + 1) {
        b.pop_back();
        rec(v, b);
      }
      if (my_query(c) != (int)c.size() + 1) {
        c.pop_back();
        rec(v, c);
      }
    }
  };
  
  
  vector <int> a;
  for (int i = n; i < 2 * n; ++i) a.push_back(i);
  for (int i = 0; i < n; ++i) rec(i, a);
  for (int i = 0; i < 2 * n; ++i) {
    for (int j = i + 1; j < 2 * n; ++j) {
      int x = my_query({i, j});
      if (x == 1) {
        g[i].push_back(j);
        g[j].push_back(i);
      }
    }
  }
  for (int i = 0; i < 2 * n; ++i) {
    sort(g[i].begin(), g[i].end());
    g[i].resize(unique(g[i].begin(), g[i].end()) - g[i].begin());
  }
  vector <int> who(2 * n, -1);
  vector <set <int>> bad(2 * n);
  for (int i = 0; i < 2 * n; ++i) {
    if (g[i].size() == 1) {
      who[i] = g[i][0];
      who[g[i][0]] = i;
    } else if (g[i].size() == 3) {
      for (int j = 0; j < 3; ++j) {
        vector <int> p = {i};
        for (int k = 0; k < 3; ++k) {
          if (k != j) p.push_back(g[i][k]);
        }
        if (my_query(p) == 1) {
          bad[i].insert(g[i][j]);
          bad[g[i][j]].insert(i);
        }
      }
    } else {
      assert(false);
    }
  }
  for (int i = 0; i < 2 * n; ++i) {
    if (who[i] == -1) {
      for (int j = 0; j < (int)g[i].size(); ++j) {
        if (!bad[i].count(g[i][j])) {
          who[i] = g[i][j];
        }
      }
    }
  }

  for (int i = 0; i < 2 * n; ++i) {
    if (who[i] > i) {
      Answer(i + 1, who[i] + 1);
    }
  }
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Incorrect 44 ms 2808 KB Wrong Answer [3]
4 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 12 ms 1152 KB Output is correct
11 Correct 13 ms 1128 KB Output is correct
12 Correct 13 ms 1152 KB Output is correct
13 Correct 14 ms 1152 KB Output is correct
14 Correct 13 ms 1280 KB Output is correct
15 Correct 13 ms 1152 KB Output is correct
16 Correct 13 ms 1280 KB Output is correct
17 Correct 13 ms 1152 KB Output is correct
18 Correct 13 ms 1280 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Incorrect 45 ms 2808 KB Wrong Answer [3]
4 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Incorrect 44 ms 2808 KB Wrong Answer [3]
4 Halted 0 ms 0 KB -