Submission #744280

#	Time	Username	Problem	Language	Result	Execution time	Memory
744280		MON	Library (JOI18_library)	C++14	19 / 100	564 ms	308 KiB

library

#include <cstdio>
#include <vector>
#include "library.h"
using namespace std;

void Solve(int N)
{
	vector<int> m(N,0);
	if(N <= 2)
        {
            vector<int> ans;
            if(N == 1) ans = {1};
            else ans = {1,2};

            Answer(ans);return;
        }
	vector<int> vecini[N]; int luat[N] = {0};
	for(int i = 0 ; i < N - 1 ; i++)
        {
            for(int j = i + 1 ; j < N ; j++)
                {

                    fill(m.begin(),m.end(),0);
                    m[i] = m[j] = 1;

                    int sunt = Query(m); if(sunt != 1) sunt = 0;
                    if(sunt)
                        {
                            vecini[i].emplace_back(j);
                            vecini[j].emplace_back(i);
                        }
                }
        }

    vector<int> ans;
    for(int i = 0; i < N ; i++)
        {
            if(vecini[i].size() == 1)
                {
                    ans.emplace_back(i);
                    luat[i] = 1; break;
                }
        }

    while(ans.size() < N)
        {
            for(auto &it : vecini[ans.back()])
                {
                    if(!luat[it])
                        {
                            luat[it] = 1;
                            ans.emplace_back(it);
                            break;
                        }
                }
        }

    for(auto &it : ans) it++;
    Answer(ans);
}

Compilation message (stderr)

library.cpp: In function 'void Solve(int)':
library.cpp:45:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |     while(ans.size() < N)
      |           ~~~~~~~~~~~^~~

• Subtask 1: 19 / 19
• Subtask 2: 0 / 81