Submission #837234

#	Time	Username	Problem	Language	Result	Execution time	Memory
837234		Sohsoh84	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 = 1e6 + 10;

int deg[MAXN], n, m;
vector<int> f[MAXN];

variant<bool, vector<int>> find_journey(int n_, int m_, vector<int> U_, vector<int> V_) {
	n = n_;
	m = m_;
	for (int i = 0; i < m; i++) deg[U_[i]]++, f[MAXN];

	if (deg[0] >= 2 && deg[1] >= 1) return {f[0][0], f[1][0], f[0][1], f[0][0], f[1][0], f[0][1]};
	return false;
}

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:14:50: warning: right operand of comma operator has no effect [-Wunused-value]
   14 |  for (int i = 0; i < m; i++) deg[U_[i]]++, f[MAXN];
      |                                            ~~~~~~^
islands.cpp:16:94: error: could not convert '{f[0].std::vector<int>::operator[](0), f[1].std::vector<int>::operator[](0), f[0].std::vector<int>::operator[](1), f[0].std::vector<int>::operator[](0), f[1].std::vector<int>::operator[](0), f[0].std::vector<int>::operator[](1)}' from '<brace-enclosed initializer list>' to 'std::variant<bool, std::vector<int, std::allocator<int> > >'
   16 |  if (deg[0] >= 2 && deg[1] >= 1) return {f[0][0], f[1][0], f[0][1], f[0][0], f[1][0], f[0][1]};
      |                                                                                              ^
      |                                                                                              |
      |                                                                                              <brace-enclosed initializer list>