Submission #638294

#	Time	Username	Problem	Language	Result	Execution time	Memory
638294		jamezzz	Thousands Islands (IOI22_islands)	C++17	Compilation error	0 ms	0 KiB

islands

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

variant<bool,vector<int>> find_journey(int N,int M,vector<int> U,vector<int> V){
	if(N<3)return 0;
	int a,b,c,d;
	for(int i=0;i<M;++i){
		if(U[i]==0&&V[i]==1)a=i;
		if(U[i]==1&&V[i]==0)b=i;
		if(U[i]==0&&V[i]==2)c=i;
		if(U[i]==2&&V[i]==0)d=i;
	}
	return vector<int>{a,b,c,d,b,a,d,c};
}

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:6:16: error: could not convert '0' from 'int' to 'std::variant<bool, std::vector<int, std::allocator<int> > >'
    6 |  if(N<3)return 0;
      |                ^
      |                |
      |                int