oj.uz

Submission #259767

# Submission time Handle Problem Language Result Execution time Memory
259767 2020-08-08T13:25:14 Z Kastanda Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 40 ms 512 KB 
// M
#include<bits/stdc++.h>
#include "chameleon.h"
#define pb push_back
using namespace std;

const int N = 505 * 2;
int M[N], MC[N];
vector < int > V[N];

void Recur(vector < int > vec)
{
        for (int i = 0; i < (int)vec.size(); i ++)
                if (V[vec[i]].size() == 3)
                        swap(vec[i], vec.back()), vec.pop_back(), i --;
        if (!vec.size())
                return ;

        /*printf("Now : ");
        for (int i : vec)
                printf("%d ", i);
        printf("\n");
        fflush(stdout);*/

        vector < int > tmp, bad;
        tmp.pb(vec[0]);
        for (int i = 1; i < (int)vec.size(); i ++)
        {
                tmp.pb(vec[i]);
                if (Query(tmp) == (int)tmp.size())
                        continue;
                else
                        bad.pb(vec[i]), tmp.pop_back();
        }
        assert((int)tmp.size() >= (int)vec.size() / 4);
        for (int i : bad)
        {
                int le = 0, ri = (int)tmp.size(), md;
                while (true)
                {
                        vector < int > ff(tmp.begin() + le, tmp.begin() + ri);
                        ff.pb(i);
                        if (le > 0 && Query(ff) == (int)ff.size())
                                break;
                        while (ri - le > 1)
                        {
                                md = (le + ri) >> 1;
                                ff = vector < int > (tmp.begin() + le, tmp.begin() + md);
                                ff.pb(i);
                                if (Query(ff) == (int)ff.size())
                                        le = md;
                                else
                                        ri = md;
                        }
                        V[i].push_back(tmp[le]);
                        V[tmp[le]].push_back(i);

                        le ++;
                        ri = (int)tmp.size();
                }
        }
        Recur(bad);
}

void Solve(int n)
{
        vector < int > vec;
        for (int i = 1; i <= n + n; i ++)
                vec.push_back(i);
        Recur(vec);

        for (int i = 1; i <= n + n; i ++)
                if (V[i].size() == 1) // Part of a cycle of length 2
                {
                        MC[i] = V[i][0];
                        MC[V[i][0]] = i;
                }

        for (int i = 1; i <= n + n; i ++)
                if (MC[i] == 0)
                {
                        assert((int)V[i].size() == 3);
                        vector < int > All;
                        memset(M, 0, sizeof(M));
                        M[i] = 1;
                        for (int a : V[i])
                                M[a] = 1;
                        for (int v = 1; v <= n + n; v ++)
                                if (!M[v])
                                        All.pb(v);

                        for (int a : V[i])
                        {
                                vector < int > tmp(All.begin(), All.end());
                                for (int b : V[i])
                                        if (a != b)
                                                tmp.pb(b);
                                if (Query(tmp) < n)
                                {
                                        MC[i] = a;
                                        MC[a] = i;
                                        break;
                                }
                        }
                        assert(MC[i]);
                }
        for (int i = 1; i <= n + n; i ++)
                if (i < MC[i])
                        Answer(i, MC[i]);
}

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 15 ms 384 KB Output is correct
4 Correct 15 ms 384 KB Output is correct
5 Correct 21 ms 512 KB Output is correct
6 Correct 15 ms 384 KB Output is correct
7 Correct 15 ms 384 KB Output is correct
8 Correct 15 ms 384 KB Output is correct
9 Correct 15 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 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 1 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 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 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 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 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 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 37 ms 384 KB Output is correct
4 Correct 38 ms 384 KB Output is correct
5 Correct 37 ms 384 KB Output is correct
6 Correct 38 ms 384 KB Output is correct
7 Correct 38 ms 384 KB Output is correct
8 Correct 37 ms 384 KB Output is correct
9 Correct 38 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 15 ms 384 KB Output is correct
4 Correct 15 ms 384 KB Output is correct
5 Correct 21 ms 512 KB Output is correct
6 Correct 15 ms 384 KB Output is correct
7 Correct 15 ms 384 KB Output is correct
8 Correct 15 ms 384 KB Output is correct
9 Correct 15 ms 384 KB Output is correct
10 Correct 1 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 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 1 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 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 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 0 ms 384 KB Output is correct
29 Correct 0 ms 384 KB Output is correct
30 Correct 37 ms 384 KB Output is correct
31 Correct 38 ms 384 KB Output is correct
32 Correct 37 ms 384 KB Output is correct
33 Correct 38 ms 384 KB Output is correct
34 Correct 38 ms 384 KB Output is correct
35 Correct 37 ms 384 KB Output is correct
36 Correct 38 ms 384 KB Output is correct
37 Correct 39 ms 384 KB Output is correct
38 Correct 15 ms 384 KB Output is correct
39 Correct 40 ms 384 KB Output is correct
40 Correct 38 ms 384 KB Output is correct
41 Correct 39 ms 384 KB Output is correct
42 Correct 15 ms 384 KB Output is correct
43 Correct 38 ms 460 KB Output is correct
44 Correct 39 ms 384 KB Output is correct
45 Correct 40 ms 504 KB Output is correct