oj.uz

Submission #927737

# Submission time Handle Problem Language Result Execution time Memory
927737 2024-02-15T09:38:41 Z aykhn Longest Trip (IOI23_longesttrip) C++17
15 / 100
 787 ms 1112 KB 
#include <bits/stdc++.h>
#include "longesttrip.h"

using namespace std;

int A[300][300];

int ask(vector<int> a, vector<int> b)
{
    for (int x : a)
    {
        for (int y : b)
        {
            if (A[x][y]) return 1;
        }
    }
    return 0;
}

vector<int> longest_trip(int n, int D)
{
    for (int i = 0; i < n; i++)
    {
        A[i][i] = 1;
        for (int j = i + 1; j < n; j++)
        {
            A[i][j] = A[j][i] = are_connected({i}, {j});
        }
    }
    vector<int> used(n, 0);
    vector<int> v1, v2;
    for (int i = 0; i < 3; i++)
    {
        for (int j = i + 1; j < 3; j++)
        {
            if (ask({i}, {j}))
            {
                v1.push_back(i), v1.push_back(j);
                used[i] = used[j] = 1;
                break;
            }
        }
        if (!v1.empty()) break;
    }
    for (int i = 0; i < n; i++)
    {
        if (used[i]) continue;
        if (ask(v1, {i}) && ask(v2, {i})) 
        {
            int id1 = -1, id2 = -1;
            for (int j = 0; j < v1.size(); j++)
            {
                if (ask({v1[j]}, {i}))
                {
                    id1 = j;
                    break;
                }
            }
            for (int j = 0; j < v2.size(); j++)
            {
                if (ask({v2[j]}, {i}))
                {
                    id2 = j;
                    break;
                }
            }
            vector<int> nw;
            for (int j = (id2 + 1) % v2.size(); 1; j = (j + 1) % v2.size())
            {
                nw.push_back(v2[j]);
                if (j == id2) break;
            }
            nw.push_back(i), nw.push_back(v1[id1]);
            for (int j = (id1 + 1) % v1.size(); j != id1; j = (j + 1) % v1.size())
            {
                nw.push_back(v1[j]);
            }
            v2.clear();
            v1 = nw;
        }
        else if (ask(v1, {i})) 
        {
            vector<int> nw;
            int idx = -1;
            for (int j = 0; j < v1.size(); j++) 
            {
                if (ask({i}, {v1[j]})) 
                {
                    idx = j;
                    break;
                }
            }
            nw.push_back(i), nw.push_back(v1[idx]);
            for (int j = (idx + 1) % v1.size(); j != idx; j = (j + 1) % v1.size())
            {
                nw.push_back(v1[j]);
            }
            v1 = nw;
        }
        else if (ask(v2, {i}))
        {
            for (int x : v1)
            {
                for (int y : v1) assert(ask({x}, {y}));
            }
            vector<int> nw;
            int idx = -1;
            for (int j = 0; j < v2.size(); j++) 
            {
                if (ask({i}, {v2[j]})) 
                {
                    idx = j;
                    break;
                }
            }
            nw.push_back(i), nw.push_back(v2[idx]);
            for (int j = (idx + 1) % v2.size(); j != idx; j = (j + 1) % v2.size())
            {
                nw.push_back(v2[j]);
            }
            v2 = nw;
        }
        else assert(0);
    }
    vector<int> res;
    if (max(v1.size(), v2.size()) == v1.size()) res = v1;
    else if (max(v1.size(), v2.size()) == v2.size()) res = v2;
    int prev = res[0], f = 1;
    for (int i = 1; i < res.size(); i++)
    {
        f &= A[prev][res[i]];
        prev = res[i];
    }
    return res;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:51:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |             for (int j = 0; j < v1.size(); j++)
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:59:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |             for (int j = 0; j < v2.size(); j++)
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:85:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |             for (int j = 0; j < v1.size(); j++)
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:108:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  108 |             for (int j = 0; j < v2.size(); j++)
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:129:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |     for (int i = 1; i < res.size(); i++)
      |                     ~~^~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 600 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 24 ms 344 KB Output is correct
3 Correct 120 ms 344 KB Output is correct
4 Correct 333 ms 592 KB Output is correct
5 Correct 679 ms 856 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 33 ms 344 KB Output is correct
3 Correct 120 ms 600 KB Output is correct
4 Correct 333 ms 568 KB Output is correct
5 Correct 734 ms 720 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 25 ms 452 KB Output is correct
8 Correct 111 ms 600 KB Output is correct
9 Correct 224 ms 592 KB Output is correct
10 Correct 759 ms 716 KB Output is correct
11 Correct 729 ms 716 KB Output is correct
12 Correct 686 ms 856 KB Output is correct
13 Correct 720 ms 716 KB Output is correct

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 23 ms 344 KB Output is correct
3 Correct 120 ms 600 KB Output is correct
4 Correct 316 ms 572 KB Output is correct
5 Correct 741 ms 1016 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 30 ms 344 KB Output is correct
8 Correct 140 ms 600 KB Output is correct
9 Correct 271 ms 592 KB Output is correct
10 Correct 739 ms 856 KB Output is correct
11 Correct 701 ms 720 KB Output is correct
12 Correct 716 ms 724 KB Output is correct
13 Correct 785 ms 724 KB Output is correct
14 Runtime error 1 ms 600 KB Execution killed with signal 6
15 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 21 ms 344 KB Output is correct
3 Partially correct 120 ms 600 KB Output is partially correct
4 Partially correct 366 ms 600 KB Output is partially correct
5 Partially correct 730 ms 724 KB Output is partially correct
6 Correct 9 ms 344 KB Output is correct
7 Correct 22 ms 344 KB Output is correct
8 Partially correct 138 ms 600 KB Output is partially correct
9 Partially correct 261 ms 552 KB Output is partially correct
10 Partially correct 683 ms 812 KB Output is partially correct
11 Partially correct 787 ms 1112 KB Output is partially correct
12 Partially correct 706 ms 724 KB Output is partially correct
13 Partially correct 754 ms 720 KB Output is partially correct
14 Runtime error 1 ms 600 KB Execution killed with signal 6
15 Halted 0 ms 0 KB -