Submission #1011335

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011335		parsadox2	Last supper (IOI12_supper)	C++17	0 / 100	226 ms	20192 KiB

advisor

#include <bits/stdc++.h>
#include "advisor.h"

#define F first
#define S second

using namespace std;

const int N = 1e5 + 10;
int n , m , k , ar[N] , lg;
vector <int> pos[N];
bool marked[N];

struct SEG{
	int sum[N << 2];
	void Add(int x , int node = 1 , int nl = 0 , int nr = n)
	{
		sum[node]++;
		if(nl + 1 == nr)
			return;
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x < mid)
			Add(x , lc , nl , mid);
		else
			Add(x , rc , mid , nr);
	}
	void Rem(int x , int node = 1 , int nl = 0 , int nr = n)
	{
		sum[node]--;
		if(nl + 1 == nr)
			return;
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x < mid)
			Rem(x , lc , nl , mid);
		else
			Rem(x , rc , mid , nr);
	}
	int Get_val(int x , int node = 1 , int nl = 0 , int nr = n)
	{
		if(nl + 1 == nr)
			return nl;
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x <= sum[lc])
			return Get_val(x , lc , nl , mid);
		else
			return Get_val(x - sum[lc] , rc , mid , nr);
	}
	int Get_id(int x , int node = 1 , int nl = 0 , int nr = n)
	{
		if(nl + 1 == nr)
			return sum[node];
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x < mid)
			return Get_id(x , lc , nl , mid);
		else
			return sum[lc] + Get_id(x , rc , mid , nr);
	}
	bool Ex(int x , int node = 1 , int nl = 0 , int nr = n)
	{
		if(nl + 1 == nr)
			return sum[node];
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x < mid)
			return Ex(x , lc , nl , mid);
		else
			return Ex(x , rc , mid , nr);
	}
} seg;

void Print(int val)
{
	for(int i = 0 ; i < lg ; i++)
	{
		if((val >> i) & 1)
			WriteAdvice(1);
		else
			WriteAdvice(0);
	}
}

void ComputeAdvice(int *C, int nn, int kk, int mm) {
	n = nn;
	k = kk;
	m = mm;
	lg = 1;
	int tmp = 2;
	while(tmp < k)
	{
		lg++;
		tmp *= 2;
	}
	for(int i = 0 ; i < n ; i++)
	{
		ar[i] = C[i];
		pos[i].push_back(n + 1);
	}
	for(int i = n - 1 ; i > -1 ; i--)
	{
		pos[ar[i]].push_back(i);
	}
	set <pair<int , int>> st;
	vector <int> vec;
	for(int i = 0 ; i < k ; i++)
	{
		seg.Add(i);
		st.insert(make_pair(pos[i].back() , i));
	}
	for(int i = 0 ; i < k ; i++)
	{
		if(pos[i].size() == 1)
		{
			marked[i] = true;
			vec.push_back(i);
			WriteAdvice(1);
		}
		else
			WriteAdvice(0);
	}
	for(int i = k ; i < n ; i++)
	{
		if(pos[i].size() == 2)
		{
			marked[i] = true;
			WriteAdvice(1);
		}
		else
			WriteAdvice(0);
	}
	for(int i = 0 ; i < n ; i++)  
	{
		if(!seg.Ex(ar[i]))
		{
			pos[ar[i]].pop_back();
			auto it = st.end();  it--;  auto now = *it;
			if(!vec.empty())
			{
				now = make_pair(n + 1 , vec.back());
				vec.pop_back();
				st.erase(now);
				seg.Rem(now.S);
				seg.Add(ar[i]);
				st.insert(make_pair(pos[ar[i]].back() , ar[i]));
				if(marked[ar[i]])
					vec.push_back(ar[i]);
				continue;
			}
			st.erase(now);
			int id_rem = seg.Get_id(now.S);
			id_rem--;
			seg.Rem(now.S);
			seg.Add(ar[i]);
			st.insert(make_pair(pos[ar[i]].back() , ar[i]));
			Print(id_rem);
		}
		else
		{
			st.erase(make_pair(pos[ar[i]].back() , ar[i]));
			pos[ar[i]].pop_back();
			st.insert(make_pair(pos[ar[i]].back() , ar[i]));
		}
	}
}



//

assistant

#include <bits/stdc++.h>
#include "assistant.h"

#define F first
#define S second

using namespace std;

const int N = 1e5 + 10;

int n2 , k2 , r2 , lg2;

struct SEG{
	int sum[N << 2];
	void Add(int x , int node = 1 , int nl = 0 , int nr = n2)
	{
		sum[node]++;
		if(nl + 1 == nr)
			return;
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x < mid)
			Add(x , lc , nl , mid);
		else
			Add(x , rc , mid , nr);
	}
	void Rem(int x , int node = 1 , int nl = 0 , int nr = n2)
	{
		sum[node]--;
		if(nl + 1 == nr)
			return;
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x < mid)
			Rem(x , lc , nl , mid);
		else
			Rem(x , rc , mid , nr);
	}
	int Get_val(int x , int node = 1 , int nl = 0 , int nr = n2)
	{
		if(nl + 1 == nr)
			return nl;
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x <= sum[lc])
			return Get_val(x , lc , nl , mid);
		else
			return Get_val(x - sum[lc] , rc , mid , nr);
	}
	int Get_id(int x , int node = 1 , int nl = 0 , int nr = n2)
	{
		if(nl + 1 == nr)
			return sum[node];
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x < mid)
			return Get_id(x , lc , nl , mid);
		else
			return sum[lc] + Get_id(x , rc , mid , nr);
	}
	bool Ex(int x , int node = 1 , int nl = 0 , int nr = n2)
	{
		if(nl + 1 == nr)
			return sum[node];
		int mid = (nl + nr) >> 1 , lc = node << 1 , rc = lc | 1;
		if(x < mid)
			return Ex(x , lc , nl , mid);
		else
			return Ex(x , rc , mid , nr);
	}
} seg2;

void Assist(unsigned char *ar, int nn, int kk, int rr) {
	n2 = nn;
	k2 = kk;
	r2 = rr;
	lg2 = 1;
	int tmp = 2;
	while(tmp < k2)
	{
		lg2++;
		tmp *= 2;
	}
	//cout << lg2 << endl;
	vector <int> vec;
	for(int i = 0 ; i < k2 ; i++)
	{
		seg2.Add(i);
		if(ar[i] == 1)
			vec.push_back(i);
	}
	int pos = n2;
	for(int i = 0 ; i < n2 ; i++)
	{
		int now = GetRequest();
		if(seg2.Ex(now))
			continue;
		if(!vec.empty())
		{
			int bd = vec.back();
			PutBack(bd);
			seg2.Rem(bd);
			seg2.Add(now);
			vec.pop_back();
			if(ar[now])
				vec.push_back(now);
			continue;
		}
		int id = 0;
		for(int j = 0 ; j < lg2 ; j++)
		{
			if(ar[pos] == 1)
			{
				id |= (1 << j);
			}
			pos++;
		}
		id++;
		int bd = seg2.Get_val(id);
		PutBack(bd);
		seg2.Rem(bd);
		seg2.Add(now);
		if(ar[now])
			vec.push_back(now);
	}
}


//

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 35
• Subtask 5: 0 / 39