oj.uz

Submission #307834

# Submission time Handle Problem Language Result Execution time Memory
307834 2020-09-29T11:29:01 Z AlexLuchianov Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 83 ms 508 KB 
#include "chameleon.h"
#include <vector>
#include <algorithm>
#include <cassert>
#include <iostream>

namespace {
  int const sets = 4;
  std::vector<std::vector<int>> g;
  void add_edge(int x, int y) {
    g[x].push_back(y);
    g[y].push_back(x);
  }
  std::vector<int> reunion(std::vector<int> a, std::vector<int> b) {
    for(int i = 0; i < b.size(); i++)
      a.push_back(b[i]);
    return a;
  }
  int query(std::vector<int> a) {
    return Query(a);
  }
  std::vector<int> pref(std::vector<int> a, int k) {
    if(a.size() <= k)
      return a;
    else {
      std::vector<int> result;
      for(int i = 0; i < k; i++)
        result.push_back(a[i]);
      return result;
    }
  }

  std::vector<std::pair<int,int>> get_all_edges(std::vector<int> a, int node) {
    std::vector<std::pair<int,int>> edges;
    int x = 0;
    do {
      for(int jump = (1 << 10); 0 < jump; jump /= 2) {
        if(x + jump < a.size() && query(reunion(pref(a, x + jump), {node})) == x + jump + 1)
          x += jump;
      }
      edges.push_back({a[x], node});
      a.erase(a.begin() + x);
    } while(query(reunion(a, {node})) < a.size() + 1);

    return edges;
  }
}



void Solve(int n) {
  std::vector<std::vector<int>> independent_set(sets);
  g.resize(1 + 2 * n);
  
  for(int i = 1; i <= 2 * n; i++)  {
    int ptr = 0;
    for(int j = 0; j < sets; j++) {
      if(j == sets - 1 || query(reunion(independent_set[j], {i})) == independent_set[j].size() + 1) {
        independent_set[j].push_back(i);
        ptr = j;
        break;
      }
    }
    for(int j = 0; j < sets - 1; j++) 
      if(find(independent_set[j].begin(), independent_set[j].end(), i) == independent_set[j].end()) {
        if(j < ptr) {
          std::vector<std::pair<int,int>> edges = get_all_edges(independent_set[j], i);
          for(int h = 0; h < edges.size(); h++) 
            add_edge(edges[h].first, edges[h].second);
        } else if(query(reunion(independent_set[j], {i})) < independent_set[j].size() + 1) {
          std::vector<std::pair<int,int>> edges = get_all_edges(independent_set[j], i);
          for(int h = 0; h < edges.size(); h++) 
            add_edge(edges[h].first, edges[h].second);
        }
      }
  }
  
  std::vector<int> connect(2 * n + 1);
  
  for(int i = 1; i <= 2 * n; i++) {
    assert(g[i].size() == 1 || g[i].size() == 3);
    if(g[i].size() == 3) {
      connect[i] += g[i][0] + g[i][1] + g[i][2];
      if(query({i, g[i][0], g[i][1]}) == 1) {
        connect[i] -= g[i][2];
        connect[g[i][2]] -= i;
      } else if (query({i, g[i][0], g[i][2]}) == 1) {
        connect[i] -= g[i][1];
        connect[g[i][1]] -= i;
      } else {
        connect[i] -= g[i][0];
        connect[g[i][0]] -= i;
      }
    } else
      connect[i] += g[i][0];
  }

  for (int i = 1; i <= 2 * n; i++)
    if(i < connect[i])
      Answer(i, connect[i]);
}

Compilation message

chameleon.cpp: In function 'std::vector<int> {anonymous}::reunion(std::vector<int>, std::vector<int>)':
chameleon.cpp:15:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(int i = 0; i < b.size(); i++)
      |                    ~~^~~~~~~~~~
chameleon.cpp: In function 'std::vector<int> {anonymous}::pref(std::vector<int>, int)':
chameleon.cpp:23:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   23 |     if(a.size() <= k)
      |        ~~~~~~~~~^~~~
chameleon.cpp: In function 'std::vector<std::pair<int, int> > {anonymous}::get_all_edges(std::vector<int>, int)':
chameleon.cpp:38:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |         if(x + jump < a.size() && query(reunion(pref(a, x + jump), {node})) == x + jump + 1)
      |            ~~~~~~~~~^~~~~~~~~~
chameleon.cpp:43:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     } while(query(reunion(a, {node})) < a.size() + 1);
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:58:67: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |       if(j == sets - 1 || query(reunion(independent_set[j], {i})) == independent_set[j].size() + 1) {
      |                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
chameleon.cpp:68:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |           for(int h = 0; h < edges.size(); h++)
      |                          ~~^~~~~~~~~~~~~~
chameleon.cpp:70:59: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |         } else if(query(reunion(independent_set[j], {i})) < independent_set[j].size() + 1) {
      |                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
chameleon.cpp:72:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |           for(int h = 0; h < edges.size(); h++)
      |                          ~~^~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 32 ms 384 KB Output is correct
4 Correct 32 ms 384 KB Output is correct
5 Correct 37 ms 384 KB Output is correct
6 Correct 32 ms 508 KB Output is correct
7 Correct 32 ms 384 KB Output is correct
8 Correct 32 ms 384 KB Output is correct
9 Correct 32 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 74 ms 384 KB Output is correct
4 Correct 83 ms 384 KB Output is correct
5 Correct 74 ms 384 KB Output is correct
6 Correct 74 ms 384 KB Output is correct
7 Correct 75 ms 444 KB Output is correct
8 Correct 74 ms 384 KB Output is correct
9 Correct 74 ms 384 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 32 ms 384 KB Output is correct
4 Correct 32 ms 384 KB Output is correct
5 Correct 37 ms 384 KB Output is correct
6 Correct 32 ms 508 KB Output is correct
7 Correct 32 ms 384 KB Output is correct
8 Correct 32 ms 384 KB Output is correct
9 Correct 32 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 74 ms 384 KB Output is correct
31 Correct 83 ms 384 KB Output is correct
32 Correct 74 ms 384 KB Output is correct
33 Correct 74 ms 384 KB Output is correct
34 Correct 75 ms 444 KB Output is correct
35 Correct 74 ms 384 KB Output is correct
36 Correct 74 ms 384 KB Output is correct
37 Correct 58 ms 384 KB Output is correct
38 Correct 32 ms 384 KB Output is correct
39 Correct 57 ms 504 KB Output is correct
40 Correct 58 ms 384 KB Output is correct
41 Correct 57 ms 384 KB Output is correct
42 Correct 32 ms 384 KB Output is correct
43 Correct 74 ms 384 KB Output is correct
44 Correct 58 ms 384 KB Output is correct
45 Correct 57 ms 384 KB Output is correct