Submission #230995

#	Time	Username	Problem	Language	Result	Execution time	Memory
230995		peijar	Cave (IOI13_cave)	C++17	Compilation error	0 ms	0 KiB

cave

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

#define SZ(v) ((int)(v).size())

void answer(vector<int> S, vector<int> D);
int tryCombination(vector<int> S);

void exploreCave(int nb_portes)
{
	vector<int> switches(nb_portes);
	vector<bool> fixed(nb_portes);
	int lst_ans(tryCombination(switches));

	auto flip_range = [&](int left, int right)
	{
		for (int i(left); i <= right; ++i)
			if (!fixed[i])
				switches[i] ^= 1;
	};

	vector<int> portes(nb_portes);

	for (int i(0); i < nb_portes; ++i)
	{
		int lft(0), rgt(nb_portes);
		while (lft < rgt)
		{
			int mid = (lft + rgt)/2;
			flip_range(lft, mid);
			int nxt_ans = tryCombination(switches);
			flip_range(lft, mid);
			if ((lst_ans < i+1 and nxt_ans >= i+1) or (lst_ans >= i+1 and nxt_ans < i+1))
				rgt = mid;
			else
				lft = mid+1;
		}
		if (lst_ans < i+1)
			switches[lft] ^= 1;
		fixed[lft] = true;
		portes[i] = lft;
	}
	answer(switches, portes);
}

Compilation message (stderr)

/tmp/ccccir6H.o: In function `exploreCave':
cave.cpp:(.text+0x1ca): undefined reference to `tryCombination(std::vector<int, std::allocator<int> >)'
cave.cpp:(.text+0x348): undefined reference to `tryCombination(std::vector<int, std::allocator<int> >)'
cave.cpp:(.text+0x524): undefined reference to `answer(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status