oj.uz

Submission #742229

# Submission time Handle Problem Language Result Execution time Memory
742229 2023-05-15T21:57:32 Z keta_tsimakuridze Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 64 ms 596 KB 
#include "chameleon.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
const int Nn = 1000 + 5;
int vis[Nn];
vector<int> v[2], V[Nn];
void dfs(int u, int c) {
    vis[u] = c;
    v[c - 1].push_back(u);
    for(int i = 0; i < V[u].size(); i++) {
        if(!vis[V[u][i]]) dfs(V[u][i], 3 - c);
    }
}
int query(int t, int l, int r, int i) {
    vector<int> x; x.push_back(i);
    for(int i = l; i <= r; i++) x.push_back(v[t][i]);
    if(l > r) return 0;
    return (Query(x) < r - l + 1 + 1);
}
void Solve(int N) {
    for(int i = 2; i <= 2 * N; i++) {
        for(int j = 1; j < i; j++) vis[j] = 0;
        v[0].clear(); v[1].clear();
        for(int j = 1; j < i; j++) {
            if(!vis[j]) {
                dfs(j, 2);

            }
        }
        for(int t = 0; t < 2; t++) {
            int lo = 0, hi = (int)v[t].size() - 1;
            for(int c = 0; c < 3; c++) {
                if(!query(t, lo, hi, i)) break;
                int l = lo, r = hi, x = 0;
                while(l <= r) {
                    int mid = (l + r) / 2;
                    if(!query(t, lo, mid, i)) l = mid + 1;
                    else r = mid - 1, x = mid;
                }

                V[i].push_back(v[t][x]);
                V[v[t][x]].push_back(i);
                lo = x + 1;
            }
        }
    }

    // 3nlogn + 4n + 6n
    set<pair<int,int>> s;
    for(int i = 1; i <= 2 * N; i++) {
        if(V[i].size() == 3) {
            for(int j = 0; j < 3; j++) {
                if(V[i][j] < i) s.insert({V[i][j], i});
            }
        }
    }
    for(int i = 1; i <= 2 * N; i++) {
//        cout << V[i].size() << endl;
        if(V[i].size() == 1) {
            if(V[i][0] < i) Answer(V[i][0], i);
            continue;
        }
        if(Query({i, V[i][1], V[i][2]}) == 1) {
            if(s.count({i, V[i][0]})) s.erase({i, V[i][0]});
            else s.erase({V[i][0], i});
            continue;
        }
        if(Query({i, V[i][0], V[i][2]}) == 1) {
            if(s.count({i, V[i][1]})) s.erase({i, V[i][1]});
            else s.erase({V[i][1], i});
            continue;
        }
        if(s.count({i, V[i][2]})) s.erase({i, V[i][2]});
        else s.erase({V[i][2], i});
    }
    while(s.size()) {
        Answer((*--s.end()).first, (*--s.end()).second);
        s.erase(--s.end());
    }
}

Compilation message

chameleon.cpp: In function 'void dfs(int, int)':
chameleon.cpp:11:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for(int i = 0; i < V[u].size(); i++) {
      |                    ~~^~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 32 ms 352 KB Output is correct
4 Correct 31 ms 372 KB Output is correct
5 Correct 32 ms 356 KB Output is correct
6 Correct 35 ms 368 KB Output is correct
7 Correct 32 ms 400 KB Output is correct
8 Correct 31 ms 364 KB Output is correct
9 Correct 31 ms 336 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 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 2 ms 384 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 336 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 61 ms 392 KB Output is correct
4 Correct 61 ms 392 KB Output is correct
5 Correct 61 ms 372 KB Output is correct
6 Correct 62 ms 396 KB Output is correct
7 Correct 60 ms 480 KB Output is correct
8 Correct 60 ms 356 KB Output is correct
9 Correct 60 ms 396 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 32 ms 352 KB Output is correct
4 Correct 31 ms 372 KB Output is correct
5 Correct 32 ms 356 KB Output is correct
6 Correct 35 ms 368 KB Output is correct
7 Correct 32 ms 400 KB Output is correct
8 Correct 31 ms 364 KB Output is correct
9 Correct 31 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 0 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 0 ms 320 KB Output is correct
16 Correct 0 ms 336 KB Output is correct
17 Correct 0 ms 336 KB Output is correct
18 Correct 0 ms 336 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 2 ms 384 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 336 KB Output is correct
28 Correct 0 ms 336 KB Output is correct
29 Correct 0 ms 336 KB Output is correct
30 Correct 61 ms 392 KB Output is correct
31 Correct 61 ms 392 KB Output is correct
32 Correct 61 ms 372 KB Output is correct
33 Correct 62 ms 396 KB Output is correct
34 Correct 60 ms 480 KB Output is correct
35 Correct 60 ms 356 KB Output is correct
36 Correct 60 ms 396 KB Output is correct
37 Correct 62 ms 392 KB Output is correct
38 Correct 31 ms 352 KB Output is correct
39 Correct 61 ms 372 KB Output is correct
40 Correct 63 ms 596 KB Output is correct
41 Correct 64 ms 464 KB Output is correct
42 Correct 31 ms 336 KB Output is correct
43 Correct 61 ms 388 KB Output is correct
44 Correct 62 ms 368 KB Output is correct
45 Correct 63 ms 372 KB Output is correct