Submission #47854

#	Time	Username	Problem	Language	Result	Execution time	Memory
47854		mirbek01	Library (JOI18_library)	C++17	19 / 100	541 ms	588 KiB

library

#include <cstdio>
#include <vector>
#include "library.h"
using namespace std;
void Solve(int N){
      vector <int> res(N), M(N), used(N), a(N), b(N);
      int cur = 0, p1 = 0;
      a[0] = 0;
      b[0] = 0;
      used[0] = 1;

      while(1){
            vector <int> v;
            for(int i = 0; i < N; i ++)
                  if(!used[i])
                        v.emplace_back(i);
            if(!v.size()) break;
            int lo = 0, hi = v.size() - 1;
            while(hi - lo > 1){
                  int md = (lo + hi) >> 1;
                  for(int i = 0; i <= md; i ++){
                        M[v[i]] = 1;
                  }
                  int A = Query(M);
                  M[cur] = 1;
                  int B = Query(M);
                  if(A >= B)
                        hi = md;
                  else
                        lo = md;
                  M[cur] = 0;
                  for(int i = 0; i <= md; i ++)
                        M[v[i]] = 0;
            }
            for(int i = 0; i <= lo; i ++)
                  M[v[i]] = 1;
            int A = Query(M);
            M[cur] = 1;
            int B = Query(M);
            if(A == B) hi = lo;
            M[v[hi]] = 1;
            M[cur] = 0;
            A = Query(M);
            M[cur] = 1;
            B = Query(M);
            M[cur] = 0;
            for(int i = 0; i <= hi; i ++)
                  M[v[i]] = 0;
            if(A < B) break;
            used[v[hi]] = 1;
            a[++ p1] = v[hi];
            cur = v[hi];
      }

      cur = 0;
      int p2 = 0;
      while(1){
            vector <int> v;
            for(int i = 0; i < N; i ++)
                  if(!used[i])
                        v.emplace_back(i);
            if(!v.size()) break;
            int lo = 0, hi = v.size() - 1;
            while(hi - lo > 1){
                  int md = (lo + hi) >> 1;
                  for(int i = 0; i <= md; i ++){
                        M[v[i]] = 1;
                  }
                  int A = Query(M);
                  M[cur] = 1;
                  int B = Query(M);
                  if(A >= B)
                        hi = md;
                  else
                        lo = md;
                  M[cur] = 0;
                  for(int i = 0; i <= md; i ++)
                        M[v[i]] = 0;
            }
            for(int i = 0; i <= lo; i ++)
                  M[v[i]] = 1;
            int A = Query(M);
            M[cur] = 1;
            int B = Query(M);
            if(A == B) hi = lo;
            M[v[hi]] = 1;
            M[cur] = 0;
            A = Query(M);
            M[cur] = 1;
            B = Query(M);
            M[cur] = 0;
            for(int i = 0; i <= hi; i ++)
                  M[v[i]] = 0;
            if(A < B) break;
            used[v[hi]] = 1;
            b[++ p2] = v[hi];
            cur = v[hi];
      }

      int ps = 0;
      for(int i = p2; i > 0; i --){
            res[ps ++] = b[i] + 1;
      }
      for(int i = 0; i <= p1; i ++){
            res[ps ++] = a[i] + 1;
      }
	Answer(res);
}

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