oj.uz

Submission #1079193

# Submission time Handle Problem Language Result Execution time Memory
1079193 2024-08-28T11:51:42 Z raphaelp Tiles (BOI24_tiles) C++14
13 / 100
 156 ms 19716 KB 
#include <bits/stdc++.h>
using namespace std;
int main()
{
    int N, M;
    cin >> N >> M;
    vector<vector<int>> Tab;
    vector<int> X(N), Y(N);
    for (int i = 0; i < N; i++)
    {
        cin >> X[i] >> Y[i];
    }
    for (int i = 0; i < N; i++)
    {
        if (X[(i + 1) % N] == X[i])
        {
            if (Y[i] < Y[(i + 1) % N])
                Tab.push_back({X[i], min(Y[i], Y[(i + 1) % N]), max(Y[i], Y[(i + 1) % N]) - 1, 1});
            else
                Tab.push_back({X[i], min(Y[i], Y[(i + 1) % N]), max(Y[i], Y[(i + 1) % N]) - 1, -1});
        }
    }
    sort(Tab.begin(), Tab.end());
    if (Tab[0][3] == -1)
        for (int i = 0; i < Tab.size(); i++)
            Tab[i][3] = 0 - Tab[i][3];
    int last = -1;
    int impair = 0;
    vector<int> mod12(2);
    int maxx = 0;
    set<vector<int>> S;
    for (int i = 0; i < Tab.size(); i++)
    {
        if (Tab[i][0] != last || i == Tab[i].size() - 1)
        {
            last = Tab[i][0];
            if (impair)
                break;
            if (mod12[0] == 0 || mod12[1] == 0)
            {
                int par = ((mod12[1]) ? 1 : 0);
                maxx = ((Tab[i][0] % 2 == par) ? Tab[i][0] : (Tab[i][0] - 1));
            }
        }
        if (Tab[i][3] == 1)
        {
            auto pos = S.lower_bound({Tab[i][1]});
            if (pos != S.end() && (*pos)[0] == Tab[i][2] + 1 && (*pos)[2] == Tab[i][0] % 2)
            {
                Tab[i][2] = (*pos)[1];
                if (((*pos)[1] - (*pos)[0] + 1) % 2 == 1)
                    impair--;
                mod12[(*pos)[2]]--;
                pos = S.erase(pos);
            }
            if (pos != S.begin())
            {
                pos--;
                if ((*pos)[1] == Tab[i][1] - 1 && (*pos)[2] == Tab[i][0] % 2)
                {
                    Tab[i][1] = (*pos)[0];
                    if (((*pos)[1] - (*pos)[0] + 1) % 2 == 1)
                        impair--;
                    mod12[(*pos)[2]]--;
                    S.erase(pos);
                }
            }
            if ((Tab[i][2] - Tab[i][1] + 1) % 2 == 1)
                impair++;
            mod12[Tab[i][0] % 2]++;
            S.insert({Tab[i][1], Tab[i][2], Tab[i][0] % 2});
        }
        else
        {
            auto pos = S.upper_bound({Tab[i][2]});
            pos--;
            if (Tab[i][0] % 2 != (*pos)[2])
                break;
            if (Tab[i][1] < (*pos)[0])
                break;
            int left = (*pos)[0], right = Tab[i][1] - 1;
            if (right >= left)
            {
                mod12[(*pos)[2]]++;
                if ((right - left) % 2 == 0)
                    impair++;
                S.insert({left, right, (*pos)[2]});
            }
            left = Tab[i][2] + 1, right = (*pos)[1];
            if (right >= left)
            {
                mod12[(*pos)[2]]++;
                if ((right - left) % 2 == 0)
                    impair++;
                S.insert({left, right, (*pos)[2]});
            }
            mod12[(*pos)[2]]--;
            if (((*pos)[1] - (*pos)[0]) % 2 == 0)
                impair--;
            S.erase(pos);
        }
        if (Tab[i][0] != last || i == Tab[i].size() - 1)
        {
            last = Tab[i][0];
            if (impair)
                break;
            if (mod12[0] == 0 || mod12[1] == 0)
            {
                int par = ((mod12[1]) ? 1 : 0);
                maxx = ((Tab[i][0] % 2 == par) ? Tab[i][0] : (Tab[i][0] - 1));
            }
        }
    }
    cout << maxx;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:25:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for (int i = 0; i < Tab.size(); i++)
      |                         ~~^~~~~~~~~~~~
Main.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for (int i = 0; i < Tab.size(); i++)
      |                     ~~^~~~~~~~~~~~
Main.cpp:34:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         if (Tab[i][0] != last || i == Tab[i].size() - 1)
      |                                  ~~^~~~~~~~~~~~~~~~~~~~
Main.cpp:102:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |         if (Tab[i][0] != last || i == Tab[i].size() - 1)
      |                                  ~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 436 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 436 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 600 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 352 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 72 ms 5648 KB Output is correct
3 Correct 62 ms 5644 KB Output is correct
4 Correct 73 ms 8936 KB Output is correct
5 Correct 78 ms 8964 KB Output is correct
6 Correct 1 ms 352 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 111 ms 11108 KB Output is correct
9 Correct 111 ms 11112 KB Output is correct
10 Correct 132 ms 11012 KB Output is correct
11 Correct 125 ms 11264 KB Output is correct
12 Correct 125 ms 12632 KB Output is correct
13 Correct 137 ms 13336 KB Output is correct
14 Correct 120 ms 11268 KB Output is correct
15 Correct 111 ms 11008 KB Output is correct
16 Correct 116 ms 11252 KB Output is correct
17 Correct 127 ms 11520 KB Output is correct
18 Correct 156 ms 13568 KB Output is correct
19 Correct 134 ms 11268 KB Output is correct
20 Correct 117 ms 11368 KB Output is correct
21 Correct 124 ms 10856 KB Output is correct
22 Correct 129 ms 11256 KB Output is correct
23 Correct 119 ms 15608 KB Output is correct
24 Correct 120 ms 15368 KB Output is correct
25 Correct 140 ms 15584 KB Output is correct
26 Correct 137 ms 19200 KB Output is correct
27 Correct 119 ms 19168 KB Output is correct
28 Correct 133 ms 19716 KB Output is correct
29 Correct 135 ms 11264 KB Output is correct
30 Correct 135 ms 11268 KB Output is correct
31 Correct 120 ms 10988 KB Output is correct
32 Correct 138 ms 11268 KB Output is correct
33 Correct 113 ms 11264 KB Output is correct
34 Correct 53 ms 5384 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 372 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 154 ms 13560 KB Output is correct
50 Correct 0 ms 344 KB Output is correct
51 Incorrect 0 ms 348 KB Output isn't correct
52 Halted 0 ms 0 KB -

Subtask #6
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 120 ms 10952 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 436 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 600 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 1 ms 348 KB Output isn't correct
33 Halted 0 ms 0 KB -