oj.uz

Submission #843632

# Submission time Handle Problem Language Result Execution time Memory
843632 2023-09-04T09:46:20 Z Nonoze Longest Trip (IOI23_longesttrip) C++17
5 / 100
 6 ms 500 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>

using namespace std;

std::vector<int> longest_trip(int N, int D)
{
    list <int> l1,l2;
    l1.push_back(0);
    for (int i(1); i < N; i++) {

        if (are_connected({i},{l1.back()})) {

            l1.push_back(i);
        }
        else if (!l2.empty() && are_connected({i},{l2.front()})) {
            l2.push_front(i);
        }
        else {
            if (!l2.empty()) l1.insert(l1.end(), l2.begin(), l2.end());
            l2.clear();
            l2.push_back(i);
        }
    }
    vector< int > v1, v2;

    while (!l1.empty()) {
        v1.push_back(l1.front());
        l1.pop_front();
    }
    while (!l2.empty()) {
        v2.push_back(l2.front());
        l2.pop_front();
    }
    if (v2.size()==0) return v1;
    if (!are_connected(v1, v2)) {
        if (v1.size() > v2.size()) return v1;
        return v2;
    }

    if (v1.size()>=2 && !are_connected({v1[0]}, {v1.back()})) {
        if (are_connected({v2[0]}, {v1.back()})) {
            v1.insert(v1.end(), v2.begin(), v2.end());
        }

        else {
            v1.insert(v1.begin(), v2.rbegin(), v2.rend());
        }
        return v1;
    }

    if (v2.size()>=2 && !are_connected({v2[0]}, {v2.back()})) {
        if (are_connected({v1.back()}, {v2[0]})) {
            v1.insert(v1.end(), v2.rbegin(), v2.rend());
        }

        else {
            v1.insert(v1.begin(), v2.begin(), v2.end());
        }
        return v1;
    }
    

    int l=0, r=v1.size();
    while (l<r) {
        int mid=(l+r)/2;
        if (are_connected(vector<int>(v1.begin(), v1.begin()+mid + 1), v2)) r=mid;
        else l=mid+1;
    }

    int empl1=l;
    l=0, r=v2.size();
    while (l<r) {
        int mid=(l+r)/2;
        if (are_connected(vector<int>(v2.begin(), v2.begin()+mid + 1), v1)) r=mid;
        else l=mid+1;
    }
    
    int empl2=l;

    vector<int> ans;
    ans=vector<int>(v1.begin()+empl1+1, v1.end()-1);
    ans.insert(ans.end(), v1.begin(), v1.begin()+empl1);
    ans.insert(ans.end(), v2.begin()+empl2, v2.end()-1);
    ans.insert(ans.end(), v2.begin(), v2.begin()+empl2);
    return ans;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 344 KB Incorrect
3 Halted 0 ms 0 KB -

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 440 KB Output is correct

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 444 KB Output is correct
6 Incorrect 0 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 4 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 444 KB Output is correct
6 Incorrect 0 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 440 KB Output is correct
6 Incorrect 0 ms 500 KB Incorrect
7 Halted 0 ms 0 KB -