Submission #667064

#	Time	Username	Problem	Language	Result	Execution time	Memory
667064		Stavab	Thousands Islands (IOI22_islands)	C++17	Compilation error	0 ms	0 KiB

islands

#include "islands.h"

#include <variant>
#include <vector>

std::variant<bool, std::vector<int>> find_journe(int N, int M, std::vector<int> U, std::vector<int> V)
{
  if(N == 2)
  {
    int c1 = 0, c2 = 0;
    for(int i = 0; i < U.size(); i++)
    {
        if(U[i] == 0)
            c1++;
        else
            c2++;
    }

    std::vector<int> v = {0, 1, 0, 1, 0};
    std::variant<bool, std::vector<int>> var;
    var = v;
    if(c1 >= 2 && c2 >= 1)
        return var;
  }

  return false;
}

Compilation message (stderr)

islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journe(int, int, std::vector<int>, std::vector<int>)':
islands.cpp:11:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for(int i = 0; i < U.size(); i++)
      |                    ~~^~~~~~~~~~
/usr/bin/ld: /tmp/cciIVpnU.o: in function `main':
grader.cpp:(.text.startup+0x229): undefined reference to `find_journey(int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status