Submission #839976

#	Time	Username	Problem	Language	Result	Execution time	Memory
839976		angelo_torres	Longest Trip (IOI23_longesttrip)	C++17	15 / 100	972 ms	328 KiB

longesttrip

#include "longesttrip.h"
#define sz(v) (int) v.size()
#define ff first
#define ss second

using namespace std;
typedef pair<int,int> ii;

vector<int> longest_trip(int N, int D)
{
    vector<ii> ed;
    vector<bool> d(N);
    for(int i = 0; i < N; ++i){
        for(int j = i+1; j < N; ++j){
            if(!are_connected({i},{j})){
                ed.push_back({i,j});
                d[i] = 1, d[j] = 1;
            }
        }
    }
    vector<int> ans;
    if(ed.empty()){
        for(int i = 0; i < N; ++i) ans.push_back(i);
        return ans;
    }
    if(sz(ed) == 1){
        if(N == 2)
            return {0};
        ans.push_back(ed[0].ff);
        for(int i = 0; i < N; ++i) if(!d[i]) ans.push_back(i);
        ans.push_back(ed[0].ss);
        return ans;
    }
    for(int i = 0; i < sz(ed); ++i){
        ans.push_back(ed[i].ff);
    }
    for(int i = 0; i < sz(ed); ++i){
        ans.push_back(ed[i].ss);
    }
    for(int i = 0; i < N; ++i) if(!d[i]) ans.push_back(i);
    return ans;
}

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