oj.uz

Submission #47480

# Submission time Handle Problem Language Result Execution time Memory
47480 2018-05-03T17:53:16 Z hihi Library (JOI18_library) C++14
100 / 100
 698 ms 9596 KB 
#include <cstdio>
#include <vector>
#include "library.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define fbo find_by_order
#define ook order_of_key

typedef long long ll;
typedef pair<ll,ll> ii;
typedef vector<int> vi;
typedef long double ld;
typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> pbds;
typedef set<ll>::iterator sit;
typedef map<ll,ll>::iterator mit;

vector<int> res;
set<int> rem;
int n;

int query(vector<int> &test)
{
	int ex1=0;
	for(int i=0;i<n;i++)
	{
		if(test[i]) ex1=1;
	}
	if(!ex1) return 0;
	else return Query(test);
}

void solve(int l, int r)
{
	//cerr<<"SOLVE "<<l<<' '<<r<<'\n';
	if(l>r) return ;
	if(l==r)
	{
		res[l] = (*rem.begin()); return ;
	}
	int xr=0;
	for(int i=0;i<10;i++)
	{
		vector<int> test(n,0);
		for(int x:rem)
		{
			if(x&(1<<i))
			{
				test[x]=1;
			}
		}
		int res = query(test);
		test.assign(n,0);
		for(int x:rem)
		{
			if(!(x&(1<<i)))
			{
				test[x]=1;
			}
		}
		int res2 = query(test);
		if(res==res2)
		{
			xr^=(1<<i);
		}
	}
	set<int> possibleX; vi V;
	for(int x:rem)
	{
		if(possibleX.find(x^xr)==possibleX.end())
		{
			possibleX.insert(x); V.pb(x);
		}
	}
	int lo=0; int hi=int(V.size())-1;
	int ans = -1;
	while(lo<=hi)
	{
		int mid=(lo+hi)>>1;
		vector<int> test(n,0);
		for(int i=0;i<V.size();i++)
		{
			if(i<=mid) test[V[i]]=1;
			else test[V[i]]=0;
		}
		int ans1 = query(test);
		for(int x:rem)
		{
			test[x]^=1;
		}
		int ans2=query(test);
		if(ans1==ans2)
		{
			ans=mid;
			hi=mid-1;
		}
		else lo=mid+1;
	}
	//cerr<<"XOR : "<<xr<<'\n'; //cerr<<"ANS : "<<ans<<'\n';
	int x = V[ans]; int y = V[ans]^xr;
	if(l>0)
	{
		vector<int> test(n,0);
		test[res[l-1]]=1; test[x]=1;
		if(query(test)!=1)
		{
			swap(x,y);
		}
	}
	res[l] = x; res[r] = y;
	//cerr<<l<<' '<<x<<'\n'; //cerr<<r<<' '<<y<<'\n';
	rem.erase(x); rem.erase(y);
	solve(l+1,r-1);
}

void Solve(int N)
{
	n=N;
	res.resize(N);
	for(int i=0;i<N;i++) rem.insert(i);
	solve(0,N-1);
	for(int i=0;i<N;i++) res[i]++;
	Answer(res);
}

Compilation message

library.cpp: In function 'void solve(int, int)':
library.cpp:89:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<V.size();i++)
               ~^~~~~~~~~

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 760 KB Output is correct
2 Correct 55 ms 760 KB Output is correct
3 Correct 48 ms 880 KB Output is correct
4 Correct 52 ms 916 KB Output is correct
5 Correct 54 ms 916 KB Output is correct
6 Correct 39 ms 916 KB Output is correct
7 Correct 56 ms 916 KB Output is correct
8 Correct 53 ms 916 KB Output is correct
9 Correct 57 ms 916 KB Output is correct
10 Correct 21 ms 916 KB Output is correct
11 Correct 2 ms 916 KB Output is correct
12 Correct 2 ms 916 KB Output is correct
13 Correct 2 ms 916 KB Output is correct
14 Correct 2 ms 916 KB Output is correct
15 Correct 3 ms 916 KB Output is correct
16 Correct 9 ms 916 KB Output is correct

Subtask #2
81.0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 760 KB Output is correct
2 Correct 55 ms 760 KB Output is correct
3 Correct 48 ms 880 KB Output is correct
4 Correct 52 ms 916 KB Output is correct
5 Correct 54 ms 916 KB Output is correct
6 Correct 39 ms 916 KB Output is correct
7 Correct 56 ms 916 KB Output is correct
8 Correct 53 ms 916 KB Output is correct
9 Correct 57 ms 916 KB Output is correct
10 Correct 21 ms 916 KB Output is correct
11 Correct 2 ms 916 KB Output is correct
12 Correct 2 ms 916 KB Output is correct
13 Correct 2 ms 916 KB Output is correct
14 Correct 2 ms 916 KB Output is correct
15 Correct 3 ms 916 KB Output is correct
16 Correct 9 ms 916 KB Output is correct
17 Correct 693 ms 9504 KB Output is correct
18 Correct 676 ms 9504 KB Output is correct
19 Correct 698 ms 9588 KB Output is correct
20 Correct 583 ms 9588 KB Output is correct
21 Correct 525 ms 9588 KB Output is correct
22 Correct 623 ms 9596 KB Output is correct
23 Correct 674 ms 9596 KB Output is correct
24 Correct 232 ms 9596 KB Output is correct
25 Correct 654 ms 9596 KB Output is correct
26 Correct 616 ms 9596 KB Output is correct
27 Correct 213 ms 9596 KB Output is correct
28 Correct 544 ms 9596 KB Output is correct
29 Correct 609 ms 9596 KB Output is correct
30 Correct 564 ms 9596 KB Output is correct