Submission #1058274

#	Time	Username	Problem	Language	Result	Execution time	Memory
1058274		nvujica	Thousands Islands (IOI22_islands)	C++17	Compilation error	0 ms	0 KiB

islands

#include "islands.h"

#include <bits/stdc++.h>

using namespace std;

const int maxn = 1e5 + 10;

pair<int, int> adj[maxn];
map<pair<int, int> , int> mp;

variant<bool, std::vector<int>> find_journey(int n, int m, vector<int> u, vector<int> v){
	for(int i = 0; i < m; i++){
		mp[{u[i], v[i]}] = i;
	}
	
	if(n == 2) return 0;
	
	return {mp[{0, 1}], mp[{1, 0}], mp[{0, 2}], mp[{2, 0}], mp[{0, 1}], mp[{1, 0}], mp[{0, 2}], mp[{2, 0}]};
}

Compilation message (stderr)

islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, std::vector<int>, std::vector<int>)':
islands.cpp:17:20: error: could not convert '0' from 'int' to 'std::variant<bool, std::vector<int, std::allocator<int> > >'
   17 |  if(n == 2) return 0;
      |                    ^
      |                    |
      |                    int
islands.cpp:19:104: error: could not convert '{mp.std::map<std::pair<int, int>, int>::operator[](std::pair<int, int>(0, 1)), mp.std::map<std::pair<int, int>, int>::operator[](std::pair<int, int>(1, 0)), mp.std::map<std::pair<int, int>, int>::operator[](std::pair<int, int>(0, 2)), mp.std::map<std::pair<int, int>, int>::operator[](std::pair<int, int>(2, 0)), mp.std::map<std::pair<int, int>, int>::operator[](std::pair<int, int>(0, 1)), mp.std::map<std::pair<int, int>, int>::operator[](std::pair<int, int>(1, 0)), mp.std::map<std::pair<int, int>, int>::operator[](std::pair<int, int>(0, 2)), mp.std::map<std::pair<int, int>, int>::operator[](std::pair<int, int>(2, 0))}' from '<brace-enclosed initializer list>' to 'std::variant<bool, std::vector<int, std::allocator<int> > >'
   19 |  return {mp[{0, 1}], mp[{1, 0}], mp[{0, 2}], mp[{2, 0}], mp[{0, 1}], mp[{1, 0}], mp[{0, 2}], mp[{2, 0}]};
      |                                                                                                        ^
      |                                                                                                        |
      |                                                                                                        <brace-enclosed initializer list>