oj.uz

Submission #928443

# Submission time Handle Problem Language Result Execution time Memory
928443 2024-02-16T11:58:18 Z aykhn Longest Trip (IOI23_longesttrip) C++17
5 / 100
 13 ms 1676 KB 
#include <bits/stdc++.h>
#include "longesttrip.h"
 
using namespace std;
 
int A[300][300];
map<pair<vector<int>, vector<int>>, int> mp;
 
int ask(vector<int> a, vector<int> b)
{
    if (a.empty() || b.empty()) return 0;
    if (mp.find({a, b}) != mp.end()) return mp[{a, b}];
    return mp[{a, b}] = mp[{b, a}] = are_connected(a, b);
}
 
vector<int> longest_trip(int n, int D)
{
    vector<int> v1, v2;
    v1.push_back(0);
    for (int i = 1; i < n; i++)
    {
        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;
            if (ask({v1.back()}, {i}))
            {
                nw = v1;
                nw.push_back(i);
            }
            else
            {
                int l = 0, r = (int)v1.size() - 1;
                while (l < r)
                {
                    int mid = (l + r) >> 1;
                    vector<int> x;
                    for (int i = 0; i <= mid; i++)
                    {
                        x.push_back(v1[i]);
                        if (ask(x, {i})) r = mid;
                        else l = mid + 1;
                    }
                }
                int idx = l;
                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}))
        {
            vector<int> nw;
            if (ask({v2.back()}, {i}))
            {
                nw = v2;
                nw.push_back(i);
            }
            else
            {
                int l = 0, r = (int)v2.size() - 1;
                while (l < r)
                {
                    int mid = (l + r) >> 1;
                    vector<int> x;
                    for (int i = 0; i <= mid; i++)
                    {
                        x.push_back(v2[i]);
                        if (ask(x, {i})) r = mid;
                        else l = mid + 1;
                    }
                }
                int idx = l;
                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 v2.push_back(i);
    }
    if (v1.size() > v2.size()) return v1;
    else return v2;
};

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:25:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |             for (int j = 0; j < v1.size(); j++)
      |                             ~~^~~~~~~~~~~
longesttrip.cpp:33:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |             for (int j = 0; j < v2.size(); j++)
      |                             ~~^~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 344 KB Output is correct
2 Correct 2 ms 344 KB Output is correct
3 Correct 3 ms 856 KB Output is correct
4 Correct 6 ms 752 KB Output is correct
5 Correct 12 ms 1676 KB Output is correct

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 596 KB Output is correct
2 Correct 2 ms 344 KB Output is correct
3 Correct 3 ms 616 KB Output is correct
4 Correct 6 ms 724 KB Output is correct
5 Correct 12 ms 1164 KB Output is correct
6 Incorrect 0 ms 344 KB non-disjoint arrays
7 Halted 0 ms 0 KB -

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 2 ms 600 KB Output is correct
3 Correct 3 ms 344 KB Output is correct
4 Correct 6 ms 992 KB Output is correct
5 Correct 12 ms 1332 KB Output is correct
6 Incorrect 0 ms 344 KB non-disjoint arrays
7 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 344 KB Output is correct
2 Correct 2 ms 344 KB Output is correct
3 Correct 3 ms 344 KB Output is correct
4 Correct 6 ms 568 KB Output is correct
5 Partially correct 13 ms 1672 KB Output is partially correct
6 Incorrect 0 ms 344 KB non-disjoint arrays
7 Halted 0 ms 0 KB -