oj.uz

Submission #58680

# Submission time Handle Problem Language Result Execution time Memory
58680 2018-07-18T19:42:04 Z TadijaSebez Library (JOI18_library) C++11
100 / 100
 914 ms 700 KB 
#include "library.h"
#include <stdio.h>
#include <vector>
#include <algorithm>
#include <queue>
#include <stdlib.h>
#include <ctime>
using namespace std;
#define pb push_back
const int N=1050;
//-----------------------//
/*
bool _use[N];
int _N,_Q;
int _p[N];
vector<int> _P;
int Query(vector<int> a)
{
	_Q++;
	int i;
	for(i=1;i<=_N;i++) _use[i]=0;
	for(i=0;i<a.size();i++) _use[_p[a[i]]]=1;
	int sol=0;
	for(i=1;i<=_N;i++)
	{
		if(_use[i] && !_use[i-1]) sol++;
	}
	return sol;
}
bool ok=0;
void Answer(vector<int> a)
{
	//printf("Number of queries: %i\n",_Q);
	if(a==_P){ ok=1;printf("OK\n");return;}
	reverse(_P.begin(),_P.end());
	if(a==_P) ok=1;//printf("OK\n");
	else printf("WA\n"),ok=0;
}
*/
//-----------------------//
bool done[N];
deque<int> ans;
void Fill(vector<int> &a, int n)
{
	a.clear();
	for(int i=1;i<=n;i++) if(!done[i]) a.pb(i);
}
bool was[N];
int MyQuery(vector<int> a, int n)
{
	int i;
	for(i=1;i<=n;i++) was[i]=0;
	for(i=0;i<a.size();i++) was[a[i]]=1;
	vector<int> ask;
	for(i=1;i<=n;i++) ask.pb(was[i]);
	return Query(ask);
}
bool Ask(vector<int> a, int i, int n)
{
	int sol1=MyQuery(a,n);
	a.pb(i);
	int sol2=MyQuery(a,n);
	return sol1>=sol2;
}
void Solve(int n)
{
	int i;
	for(i=1;i<=n;i++) done[i]=0;
	ans.push_back(1);
	done[1]=1;
	vector<int> my,tmp[2];
	while(ans.size()<n)
	{
		int x=ans.back();
		//printf("1: %i\n",x);
		Fill(my,n);
		if(!Ask(my,x,n)) break;
		while(my.size()>1)
		{
			tmp[0].clear();tmp[1].clear();
			for(i=0;i<my.size();i++) tmp[i&1].pb(my[i]);
			if(Ask(tmp[0],x,n)) my=tmp[0];
			else my=tmp[1];
		}
		ans.push_back(my[0]);
		done[my[0]]=1;
	}
	while(ans.size()<n)
	{
		int x=ans.front();
		//printf("2: %i\n",x);
		Fill(my,n);
		while(my.size()>1)
		{
			tmp[0].clear();tmp[1].clear();
			for(i=0;i<my.size();i++) tmp[i&1].pb(my[i]);
			if(Ask(tmp[0],x,n)) my=tmp[0];
			else my=tmp[1];
		}
		ans.push_front(my[0]);
		done[my[0]]=1;
	}
	vector<int> ret;
	while(ans.size()) ret.pb(ans.front()),ans.pop_front();
	Answer(ret);
}
//-----------------------//
/*
void StressTest()
{
	srand(time(0));
	int t,c=0,i,j;
	scanf("%i",&t);
	for(j=1;j<=t;j++)
	{
		_N=rand()%50+1;
		//printf("%i\n",_N);
		_P.clear();
		for(i=0;i<_N;i++) _P.pb(i+1);
		random_shuffle(_P.begin(),_P.end());
		for(i=0;i<_N;i++) _p[_P[i]]=i+1;//printf("%i ",_P[i]);
		//printf("\n");
		Solve(_N);
		if(!ok)
		{
			printf("%i\n",_N);
			for(i=0;i<_N;i++) printf("%i ",_P[i]);
			printf("\n");
		}
		else c++;
	}
	printf("%i of %i is correct!\n",c,t);
}
int main()
{
	StressTest();return 0;
	scanf("%i",&_N);
	int i,x;
	for(i=0;i<_N;i++) scanf("%i",&x),_P.pb(x),_p[x]=i+1;
	Solve(_N);
	return 0;
}
*/
//-----------------------//

Compilation message

library.cpp: In function 'int MyQuery(std::vector<int>, int)':
library.cpp:53:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0;i<a.size();i++) was[a[i]]=1;
          ~^~~~~~~~~
library.cpp: In function 'void Solve(int)':
library.cpp:72:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(ans.size()<n)
        ~~~~~~~~~~^~
library.cpp:81:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(i=0;i<my.size();i++) tmp[i&1].pb(my[i]);
            ~^~~~~~~~~~
library.cpp:88:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(ans.size()<n)
        ~~~~~~~~~~^~
library.cpp:96:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(i=0;i<my.size();i++) tmp[i&1].pb(my[i]);
            ~^~~~~~~~~~

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 376 KB Output is correct
2 Correct 59 ms 376 KB Output is correct
3 Correct 36 ms 376 KB Output is correct
4 Correct 51 ms 440 KB Output is correct
5 Correct 34 ms 512 KB Output is correct
6 Correct 65 ms 512 KB Output is correct
7 Correct 53 ms 512 KB Output is correct
8 Correct 66 ms 524 KB Output is correct
9 Correct 50 ms 568 KB Output is correct
10 Correct 44 ms 572 KB Output is correct
11 Correct 2 ms 572 KB Output is correct
12 Correct 2 ms 572 KB Output is correct
13 Correct 2 ms 572 KB Output is correct
14 Correct 2 ms 572 KB Output is correct
15 Correct 4 ms 572 KB Output is correct
16 Correct 5 ms 572 KB Output is correct

Subtask #2
81.0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 376 KB Output is correct
2 Correct 59 ms 376 KB Output is correct
3 Correct 36 ms 376 KB Output is correct
4 Correct 51 ms 440 KB Output is correct
5 Correct 34 ms 512 KB Output is correct
6 Correct 65 ms 512 KB Output is correct
7 Correct 53 ms 512 KB Output is correct
8 Correct 66 ms 524 KB Output is correct
9 Correct 50 ms 568 KB Output is correct
10 Correct 44 ms 572 KB Output is correct
11 Correct 2 ms 572 KB Output is correct
12 Correct 2 ms 572 KB Output is correct
13 Correct 2 ms 572 KB Output is correct
14 Correct 2 ms 572 KB Output is correct
15 Correct 4 ms 572 KB Output is correct
16 Correct 5 ms 572 KB Output is correct
17 Correct 717 ms 584 KB Output is correct
18 Correct 705 ms 584 KB Output is correct
19 Correct 748 ms 584 KB Output is correct
20 Correct 716 ms 584 KB Output is correct
21 Correct 668 ms 584 KB Output is correct
22 Correct 914 ms 584 KB Output is correct
23 Correct 725 ms 584 KB Output is correct
24 Correct 223 ms 584 KB Output is correct
25 Correct 639 ms 584 KB Output is correct
26 Correct 597 ms 584 KB Output is correct
27 Correct 220 ms 584 KB Output is correct
28 Correct 822 ms 584 KB Output is correct
29 Correct 833 ms 584 KB Output is correct
30 Correct 779 ms 700 KB Output is correct