Submission #1148784

#	Time	Username	Problem	Language	Result	Execution time	Memory
1148784		erering	Longest Trip (IOI23_longesttrip)	C++20	5 / 100	336 ms	524 KiB

longesttrip

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#include "longesttrip.h"
vector<int> longest_trip(int N, int D)
{
    int a[N];
    for(int i=0;i<N;i++)a[i]=i;
    random_device rd;
    mt19937 g(rd());
    vector<int> ans;
    map<vector<int>,bool> vis;
    int cntt=0;
    for(int i=0;i<2000;i++) {
        cntt++;
        shuffle(a, a + N, g);
        vector<int> e;
        for(int j=0;j<N;j++)e.pb(a[j]);
        if(vis[e])continue;
        cntt++;
        if(cntt==256)break;
        vis[e]=1;
        int cnt=1;
        vector<int> vec;
        vec.pb(a[0]);
        for(int j=1;j<N;j++){
            vector<int> v1,v2;
            v1.pb(a[0]);
            v2.pb(a[j]);
            if(!are_connected(v1,v2))break;
            vec.pb(a[j]);
        }
        if(vec.size()>ans.size())ans=vec;
    }
    return ans;
}

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 25
• Subtask 4: 0 / 60