oj.uz

Submission #234917

# Submission time Handle Problem Language Result Execution time Memory
234917 2020-05-26T09:07:26 Z anayk Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 41 ms 664 KB 
#include "chameleon.h"
#include <set>
#include <vector>
 
std::set<int> Adj[1001];
std::vector<int> edges[1001];
std::vector<int> groups[4];
int part[1001];
 
int threeQuery(int x, int y, int z) {
  std::vector<int> q;
  q.push_back(x);
  q.push_back(y);
  q.push_back(z);
  return Query(q);
}
 
int queryRange(int l, int r, int group) {
  if(r-l < 1)
    return r-l+1;
 
  std::vector<int> q;
  for(int i = l; i <= r; i++)
    q.push_back(groups[group][i]);
 
  return Query(q);
}
 
int queryRange(int l, int r, int x, int group) {
  std::vector<int> q;
  for(int i = l; i <= r; i++)
    q.push_back(groups[group][i]);
  q.push_back(x);
  return Query(q);
}
 
int count(int l, int r, int x, int group) {
  return (r-l+2) - queryRange(l, r, x, group);
}
 
int bs(int x, int l, int r, int group) {
  if(l == r) {
    Adj[x].insert(groups[group][l]);
    Adj[groups[group][l]].insert(x);
    return l;
  }
 
  int m = (l+r)/2;
  
  int cl = count(l, m, x, group);
  if(cl)
    bs(x, l, m, group);
  else
    bs(x, m+1, r, group);
}
  
void Solve(int N) {
  for(int i = 1; i <= 2*N; i++) {
    for(int j = 0; j < 4; j++) {
      groups[j].push_back(i);
      if(queryRange(0, groups[j].size()-1, j) == groups[j].size()) {
        part[i] = j;
        break;
      }
      else
        groups[j].pop_back();
    }
  }
 
  for(int i = 1; i <= 2*N; i++) {
    for(int j = 0; j < part[i]; j++) {
      int last = 0;
      do {
        last = bs(i, last, groups[j].size()-1, j)+1;
      } while(last < groups[j].size() && Adj[i].size() < 3 && count(last, groups[j].size()-1, i, j));
    }
  }
 
  for(int i = 1; i <= 2*N; i++) {
    if(Adj[i].size() == 3) {
      for(std::set<int>::iterator it = Adj[i].begin(); it != Adj[i].end(); it++) {
        edges[i].push_back(*it);
      }
    }
  }
  
  for(int i = 1; i <= 2*N; i++) {
    if(edges[i].size() == 3) {
      int x0 = threeQuery(i, edges[i][1], edges[i][2]);
      int x1 = threeQuery(i, edges[i][0], edges[i][2]);
 
      int x;
      if(x0 == 1)
        x = edges[i][0];
      else if(x1 == 1)
        x = edges[i][1];
      else
        x = edges[i][2];
 
      Adj[x].erase(i);
      Adj[i].erase(x);
    }
  }
 
  for(int i = 1; i <= 2*N; i++) {
    int j = *Adj[i].begin();
    if(i < j)
      Answer(i, j);
  }
}

Compilation message

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:61:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if(queryRange(0, groups[j].size()-1, j) == groups[j].size()) {
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
chameleon.cpp:75:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       } while(last < groups[j].size() && Adj[i].size() < 3 && count(last, groups[j].size()-1, i, j));
               ~~~~~^~~~~~~~~~~~~~~~~~
chameleon.cpp: In function 'int bs(int, int, int, int)':
chameleon.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
4.0 / 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 Correct 23 ms 384 KB Output is correct
4 Correct 25 ms 512 KB Output is correct
5 Correct 23 ms 504 KB Output is correct
6 Correct 23 ms 512 KB Output is correct
7 Correct 23 ms 384 KB Output is correct
8 Correct 24 ms 384 KB Output is correct
9 Correct 23 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

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

Subtask #4
20.0 / 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 Correct 40 ms 632 KB Output is correct
4 Correct 39 ms 512 KB Output is correct
5 Correct 39 ms 512 KB Output is correct
6 Correct 40 ms 664 KB Output is correct
7 Correct 40 ms 600 KB Output is correct
8 Correct 39 ms 616 KB Output is correct
9 Correct 39 ms 632 KB Output is correct

Subtask #5
36.0 / 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 Correct 23 ms 384 KB Output is correct
4 Correct 25 ms 512 KB Output is correct
5 Correct 23 ms 504 KB Output is correct
6 Correct 23 ms 512 KB Output is correct
7 Correct 23 ms 384 KB Output is correct
8 Correct 24 ms 384 KB Output is correct
9 Correct 23 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 4 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 6 ms 384 KB Output is correct
28 Correct 4 ms 384 KB Output is correct
29 Correct 4 ms 384 KB Output is correct
30 Correct 40 ms 632 KB Output is correct
31 Correct 39 ms 512 KB Output is correct
32 Correct 39 ms 512 KB Output is correct
33 Correct 40 ms 664 KB Output is correct
34 Correct 40 ms 600 KB Output is correct
35 Correct 39 ms 616 KB Output is correct
36 Correct 39 ms 632 KB Output is correct
37 Correct 39 ms 632 KB Output is correct
38 Correct 23 ms 384 KB Output is correct
39 Correct 41 ms 512 KB Output is correct
40 Correct 39 ms 632 KB Output is correct
41 Correct 38 ms 632 KB Output is correct
42 Correct 23 ms 512 KB Output is correct
43 Correct 40 ms 512 KB Output is correct
44 Correct 39 ms 640 KB Output is correct
45 Correct 40 ms 512 KB Output is correct