oj.uz

Submission #591961

# Submission time Handle Problem Language Result Execution time Memory
591961 2022-07-08T09:43:09 Z Jarif_Rahman Chameleon's Love (JOI20_chameleon) C++17
100 / 100
 76 ms 720 KB 
#include "chameleon.h"
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

namespace {
    int query(vector<int> v){
        for(int &x: v) x++;
        return Query(v);
    }
    void answer(int a, int b){
        Answer(a+1, b+1);
    }

    int n;

    vector<vector<int>> v;
    set<pair<int, int>> s;
    vector<int> g[2];
    vector<int> color;

    void dfs(int nd, int c){
        color[nd] = c;
        g[c].pb(nd);
        c = 1-c;
        for(int x: v[nd]){
            if(color[x] == c) continue;
            else dfs(x, c);
        }
    }
    void make_groups(int m){
        color.assign(m+1, -1);
        g[0].clear();
        g[1].clear();
        for(int i = 0; i <= m; i++) if(color[i] == -1) dfs(i, 0);
    }

    void bs(int i, vector<int> sth){
        while(!sth.empty()){
            auto ss = sth;
            ss.pb(i);
            if(query(ss) == ss.size()) break;

            int l = 0, r = sth.size();
            while(l < r){
                int md = (l+r)/2;
                vector<int> ss(sth.begin(), sth.begin()+md+1);
                ss.pb(i);
                if(query(ss) == ss.size()) l = md+1;
                else r = md;
            }

            v[i].pb(sth[l]);
            v[sth[l]].pb(i);

            sth.erase(sth.begin()+l);
        }
    }
}

void Solve(int _n){
    n = _n;
    v.resize(2*n);

    for(int i = 0; i < 2*n; i++){
        bs(i, g[0]);
        bs(i, g[1]);
        make_groups(i);
    }

    for(int i = 0; i < 2*n; i++) for(int x: v[i]) s.insert({min(i, x), max(i, x)});

    for(int i = 0; i < 2*n; i++){
        if(v[i].size() < 3) continue;
        int a = v[i][0], b = v[i][1], c = v[i][2];
        int rm = -1;
        if(query({i, a, b}) == 1) rm = c;
        else if(query({i, a, c}) == 1) rm = b;
        else rm = a;
        if(s.find({min(i, rm), max(i, rm)}) != s.end()) s.erase({min(i, rm), max(i, rm)});
    }

    for(auto [a, b]: s) answer(a, b);
}

Compilation message

chameleon.cpp: In function 'void {anonymous}::bs(int, std::vector<int>)':
chameleon.cpp:46:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |             if(query(ss) == ss.size()) break;
      |                ~~~~~~~~~~^~~~~~~~~~~~
chameleon.cpp:53:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |                 if(query(ss) == ss.size()) l = md+1;
      |                    ~~~~~~~~~~^~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 28 ms 464 KB Output is correct
4 Correct 28 ms 452 KB Output is correct
5 Correct 30 ms 468 KB Output is correct
6 Correct 29 ms 464 KB Output is correct
7 Correct 29 ms 464 KB Output is correct
8 Correct 28 ms 468 KB Output is correct
9 Correct 28 ms 476 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 208 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 75 ms 504 KB Output is correct
4 Correct 73 ms 504 KB Output is correct
5 Correct 73 ms 512 KB Output is correct
6 Correct 74 ms 720 KB Output is correct
7 Correct 75 ms 572 KB Output is correct
8 Correct 75 ms 628 KB Output is correct
9 Correct 76 ms 468 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 28 ms 464 KB Output is correct
4 Correct 28 ms 452 KB Output is correct
5 Correct 30 ms 468 KB Output is correct
6 Correct 29 ms 464 KB Output is correct
7 Correct 29 ms 464 KB Output is correct
8 Correct 28 ms 468 KB Output is correct
9 Correct 28 ms 476 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 0 ms 208 KB Output is correct
15 Correct 0 ms 208 KB Output is correct
16 Correct 0 ms 208 KB Output is correct
17 Correct 0 ms 208 KB Output is correct
18 Correct 0 ms 208 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 208 KB Output is correct
28 Correct 0 ms 208 KB Output is correct
29 Correct 0 ms 208 KB Output is correct
30 Correct 75 ms 504 KB Output is correct
31 Correct 73 ms 504 KB Output is correct
32 Correct 73 ms 512 KB Output is correct
33 Correct 74 ms 720 KB Output is correct
34 Correct 75 ms 572 KB Output is correct
35 Correct 75 ms 628 KB Output is correct
36 Correct 76 ms 468 KB Output is correct
37 Correct 67 ms 456 KB Output is correct
38 Correct 29 ms 464 KB Output is correct
39 Correct 69 ms 556 KB Output is correct
40 Correct 69 ms 504 KB Output is correct
41 Correct 68 ms 488 KB Output is correct
42 Correct 28 ms 464 KB Output is correct
43 Correct 73 ms 508 KB Output is correct
44 Correct 67 ms 464 KB Output is correct
45 Correct 69 ms 568 KB Output is correct