Submission #1081076

#	Time	Username	Problem	Language	Result	Execution time	Memory
1081076		Kipras	Longest Trip (IOI23_longesttrip)	C++17	Compilation error	0 ms	0 KiB

longesttrip

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

vector<int> longest_trip(int N, int D){
    if(D==3) {
        vector<int> a;
        for(int i = 0; i < N; i++)a.push_back(i);
        return a;
    }else if(D==2) {
        deque<int> q;
        if(!are_connected({0}, {1})) {
            q.push_back(0);
            q.push_back(2);
            q.push_back(1);
        }
        else if(!are_connected({0}, {2})) {
            q.push_back(0);
            q.push_back(1);
            q.push_back(2);
        }
        else {
            q.push_back(1);
            q.push_back(0);
            q.push_back(2);
        }

        for(int i = 3; i < N; i++) {
            if(are_connected({q.front()}, {i}))
                q.push_front(i);
            else
                q.push_back(i);
        }

        vector<int> a;
        for(int i = 0; i < N; i++) {
            a.push_back(q.front());
            q.pop_front();
        }
        return a;

    }
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:12:13: error: 'are_connected' was not declared in this scope
   12 |         if(!are_connected({0}, {1})) {
      |             ^~~~~~~~~~~~~
longesttrip.cpp:29:16: error: 'are_connected' was not declared in this scope
   29 |             if(are_connected({q.front()}, {i}))
      |                ^~~~~~~~~~~~~
longesttrip.cpp:43:1: warning: control reaches end of non-void function [-Wreturn-type]
   43 | }
      | ^