oj.uz

Submission #58728

# Submission time Handle Problem Language Result Execution time Memory
58728 2018-07-19T03:26:32 Z ksun48 Library (JOI18_library) C++14
100 / 100
 806 ms 780 KB 
#include "library.h"
#include <bits/stdc++.h>
using namespace std;

int check(int n, int a, int b){
	vector<int> ask(n, 0);
	ask[a] = ask[b] = 1;
	if(Query(ask) == 1){
		return 1;
	}
	return 0;
}

void Solve(int N) {
	int n = N;
	vector<vector<int> > groups;
	for(int i = 0; i < n; i++){
		groups.push_back({i});
	}
	while(groups.size() > 1){
		vector<int> inside;
		for(int j = 0; j < groups.size(); j++){
			inside.push_back(j);
		}
		while(inside.size() > 2){
			vector<int> newinside;
			int bb = min((int)inside.size() - 1, max(2, 2 * (int)sqrt(inside.size()) ) );
			//cout << inside.size() << " " << bb << endl;
			random_shuffle(inside.begin(), inside.end());
			for(int i = 0; i < bb; i++){
				newinside.push_back(inside[i]);
			}

			vector<int> ask(n, 0);
			for(int x : newinside){
				for(int a : groups[x]){
					ask[a] = 1;
				}
			}
			int b = Query(ask);
			//assert(b <= newn1);
			if(b < bb){
				inside = newinside;
			}
		}
		vector<vector<int> > newgroups;
		vector<vector<int> > good;
		for(int i = 0; i < groups.size(); i++){
			if(i != inside[0] && i != inside[1]){
				newgroups.push_back(groups[i]);
			} else {
				good.push_back(groups[i]);
			}
		}
		vector<int> ans;
		if(check(n, good[0][0], good[1][0])){
			reverse(good[0].begin(), good[0].end());
		} else if(check(n, good[0][good[0].size() - 1], good[1][0])){
		} else if(check(n, good[0][0], good[1][good[1].size()-1])){
			reverse(good[0].begin(), good[0].end());
			reverse(good[1].begin(), good[1].end());
		} else if(check(n, good[0][good[0].size() - 1], good[1][good[1].size() - 1])){
			reverse(good[1].begin(), good[1].end());
		} else {
			//assert(0);
		}
		ans.insert(ans.end(), good[0].begin(), good[0].end());
		ans.insert(ans.end(), good[1].begin(), good[1].end());
		newgroups.push_back(ans);
		groups = newgroups;
	}
	vector<int> ans = groups[0];
	for(int j = 0; j < ans.size(); j++){
		ans[j]++;
		//cout << ans[j] << " ";
	}
	//cout << endl;
	Answer(ans);
}

Compilation message

library.cpp: In function 'void Solve(int)':
library.cpp:22:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0; j < groups.size(); j++){
                  ~~^~~~~~~~~~~~~~~
library.cpp:48:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < groups.size(); i++){
                  ~~^~~~~~~~~~~~~~~
library.cpp:73:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 0; j < ans.size(); j++){
                 ~~^~~~~~~~~~~~

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 248 KB Output is correct
2 Correct 48 ms 436 KB Output is correct
3 Correct 61 ms 496 KB Output is correct
4 Correct 62 ms 552 KB Output is correct
5 Correct 62 ms 552 KB Output is correct
6 Correct 41 ms 552 KB Output is correct
7 Correct 63 ms 552 KB Output is correct
8 Correct 63 ms 552 KB Output is correct
9 Correct 71 ms 552 KB Output is correct
10 Correct 30 ms 552 KB Output is correct
11 Correct 2 ms 552 KB Output is correct
12 Correct 1 ms 552 KB Output is correct
13 Correct 2 ms 552 KB Output is correct
14 Correct 3 ms 552 KB Output is correct
15 Correct 3 ms 552 KB Output is correct
16 Correct 7 ms 552 KB Output is correct

Subtask #2
81.0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 248 KB Output is correct
2 Correct 48 ms 436 KB Output is correct
3 Correct 61 ms 496 KB Output is correct
4 Correct 62 ms 552 KB Output is correct
5 Correct 62 ms 552 KB Output is correct
6 Correct 41 ms 552 KB Output is correct
7 Correct 63 ms 552 KB Output is correct
8 Correct 63 ms 552 KB Output is correct
9 Correct 71 ms 552 KB Output is correct
10 Correct 30 ms 552 KB Output is correct
11 Correct 2 ms 552 KB Output is correct
12 Correct 1 ms 552 KB Output is correct
13 Correct 2 ms 552 KB Output is correct
14 Correct 3 ms 552 KB Output is correct
15 Correct 3 ms 552 KB Output is correct
16 Correct 7 ms 552 KB Output is correct
17 Correct 806 ms 780 KB Output is correct
18 Correct 697 ms 780 KB Output is correct
19 Correct 804 ms 780 KB Output is correct
20 Correct 693 ms 780 KB Output is correct
21 Correct 581 ms 780 KB Output is correct
22 Correct 746 ms 780 KB Output is correct
23 Correct 679 ms 780 KB Output is correct
24 Correct 189 ms 780 KB Output is correct
25 Correct 652 ms 780 KB Output is correct
26 Correct 587 ms 780 KB Output is correct
27 Correct 192 ms 780 KB Output is correct
28 Correct 714 ms 780 KB Output is correct
29 Correct 687 ms 780 KB Output is correct
30 Correct 722 ms 780 KB Output is correct