Submission #1315269

#	Time	Username	Problem	Language	Result	Execution time	Memory
1315269		PlayVoltz	Longest Trip (IOI23_longesttrip)	C++20	Compilation error	0 ms	0 KiB

longesttrip

#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define fi first
#define se second

map<vector<int>, map<vector<int>, int> > mmm;

int query(vector<int> a, vector<int> b){
	if (!mmm[a][b]&&!mmm[b][a])mmm[b][a]=mmm[a][b]=are_connected(a, b)+1;
	return mmm[a][b]-1;
}

vector<int> longest_trip(int n, int d){
	mmm.clear();
	if (d==3){
		vector<int> ans;
		for (int i=0; i<n; ++i)ans.pb(i);
		return ans;
	}
	if (d==2){
		deque<int> ans(1, 0);
		int done=1;
		if (are_connected({0}, {1}))ans.pb(1);
		else ans.pb(2), done=2;
		for (int i=1; i<n; ++i)if (i!=done){
			if (are_connected({i}, {ans.back()}))ans.pb(i);
			else ans.push_front(i);
		}
		vector<int> res;
		for (auto a:ans)res.pb(a);
		return res;
	}
	int aa=-1, bb=-1, cc=-1;
	for (int i=0; i<n; ++i){
		int ooga=-1;
		for (int j=0; j<n; ++j){
			if (ooga==-1&&i!=j&&query({i}, {j}))ooga=j;
			else if (ooga!=-1&&i!=j&&query({i}, {j})){
				aa=i, bb=ooga, cc=j;
				break;
			}
		}
	}
	deque<int> a(1, bb);
	for (int i=0; i<n; ++i)if (i!=aa&&i!=bb&&i!=cc){
		if (query({i}, {a.back()}))a.pb(i);
		else if (query({i}, {b.back()}))b.pb(i);
		else{
			while (b.size())a.pb(b.back()), b.pop_back();
			b.pb(i);
		}
	}
	if (query({i}, {a.back()}))a.pb(i);
	else if (query({i}, {b.back()}))b.pb(i);
	else{
		while (b.size())a.pb(b.back()), b.pop_back();
		b.pb(i);
	}
	if (b.size()>a.size())swap(a, b);
	if (query({a.back()}, {b.back()})){
		while (b.size())a.pb(b.back()), b.pop_back();
	}
	else if (query({a.back()}, {b[0]})){
		for (auto c:b)a.pb(c);
	}
	else if (query({a[0]}, {b.back()})){
		while (b.size())a.push_front(b.back()), b.pop_back();
	}
	else if (query({a[0]}, {b[0]})){
		for (auto c:b)a.push_front(c);
	}
	else{
		for (int i:b){
			if (query({i}, {a.back()}))a.pb(i);
			else if (query({i}, {b.back()}))b.pb(i);
			else{
				for (int j=1; j<n; ++j)if (query({i}, {a[j-1]})&&query({i}, {a[j]})){
					a.insert(a.begin()+j, i);
					break;
				}
			}
		}
	}
	vector<int> res;
	for (auto c:a)res.pb(c);
	return res;
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:52:38: error: 'b' was not declared in this scope
   52 |                 else if (query({i}, {b.back()}))b.pb(i);
      |                                      ^
longesttrip.cpp:52:31: error: could not convert '{<expression error>}' from '<brace-enclosed initializer list>' to 'std::vector<int>'
   52 |                 else if (query({i}, {b.back()}))b.pb(i);
      |                          ~~~~~^~~~~~~~~~~~~~~~~
      |                               |
      |                               <brace-enclosed initializer list>
longesttrip.cpp:58:20: error: 'i' was not declared in this scope
   58 |         if (query({i}, {a.back()}))a.pb(i);
      |                    ^
longesttrip.cpp:58:18: error: could not convert '{<expression error>}' from '<brace-enclosed initializer list>' to 'std::vector<int>'
   58 |         if (query({i}, {a.back()}))a.pb(i);
      |             ~~~~~^~~~~~~~~~~~~~~~~
      |                  |
      |                  <brace-enclosed initializer list>
longesttrip.cpp:59:30: error: 'b' was not declared in this scope
   59 |         else if (query({i}, {b.back()}))b.pb(i);
      |                              ^
longesttrip.cpp:59:23: error: could not convert '{i}' from '<brace-enclosed initializer list>' to 'std::vector<int>'
   59 |         else if (query({i}, {b.back()}))b.pb(i);
      |                  ~~~~~^~~~~~~~~~~~~~~~~
      |                       |
      |                       <brace-enclosed initializer list>
longesttrip.cpp:64:13: error: 'b' was not declared in this scope
   64 |         if (b.size()>a.size())swap(a, b);
      |             ^
longesttrip.cpp:65:32: error: 'b' was not declared in this scope
   65 |         if (query({a.back()}, {b.back()})){
      |                                ^
longesttrip.cpp:65:18: error: could not convert '{<expression error>}' from '<brace-enclosed initializer list>' to 'std::vector<int>'
   65 |         if (query({a.back()}, {b.back()})){
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
      |                  |
      |                  <brace-enclosed initializer list>
longesttrip.cpp:68:23: error: could not convert '{<expression error>}' from '<brace-enclosed initializer list>' to 'std::vector<int>'
   68 |         else if (query({a.back()}, {b[0]})){
      |                  ~~~~~^~~~~~~~~~~~~~~~~~~~
      |                       |
      |                       <brace-enclosed initializer list>
longesttrip.cpp:71:23: error: could not convert '{<expression error>}' from '<brace-enclosed initializer list>' to 'std::vector<int>'
   71 |         else if (query({a[0]}, {b.back()})){
      |                  ~~~~~^~~~~~~~~~~~~~~~~~~~
      |                       |
      |                       <brace-enclosed initializer list>
longesttrip.cpp:74:23: error: could not convert '{<expression error>}' from '<brace-enclosed initializer list>' to 'std::vector<int>'
   74 |         else if (query({a[0]}, {b[0]})){
      |                  ~~~~~^~~~~~~~~~~~~~~~
      |                       |
      |                       <brace-enclosed initializer list>
longesttrip.cpp:80:39: error: could not convert '{<expression error>}' from '<brace-enclosed initializer list>' to 'std::vector<int>'
   80 |                         else if (query({i}, {b.back()}))b.pb(i);
      |                                  ~~~~~^~~~~~~~~~~~~~~~~
      |                                       |
      |                                       <brace-enclosed initializer list>