oj.uz

Submission #301126

# Submission time Handle Problem Language Result Execution time Memory
301126 2020-09-17T16:42:18 Z justtestingthis2 Comparing Plants (IOI20_plants) C++14
27 / 100
 1055 ms 25856 KB 
#include<bits/stdc++.h>
#include "plants.h"
#define lc (id << 1)
#define rc (lc ^ 1)
#define md ((l + r) >> 1)
using namespace std;
const int N = 200005;
const int MXS = N * 4;
int n, k, A[N], P[2][N], rev[2][N];
int wset;
struct CMP {
	inline int operator() (int a, int b) const {
		if (!wset)
			return a < b;
		return rev[0][a] > rev[0][b];
	};
};
queue < int > Todo;
vector < int > res;
struct SEGT
{
	int MN[MXS], LZ[MXS];
	int le, ri, val;
	inline void Reset()
	{
		memset(MN, 0, sizeof(MN));
		memset(LZ, 0, sizeof(LZ));
	}
	inline void Shift(int id)
	{
		MN[lc] += LZ[id];
		MN[rc] += LZ[id];
		LZ[lc] += LZ[id];
		LZ[rc] += LZ[id];
		LZ[id] = 0;
		return ;
	}
	void Adder(int id = 1, int l = 0, int r = n)
	{
		if (ri <= l || r <= le)
			return ;
		if (le <= l && r <= ri)
		{
			MN[id] += val;
			LZ[id] += val;
			return ;
		}
		Shift(id);
		Adder(lc, l, md);
		Adder(rc, md, r);
		MN[id] = min(MN[lc], MN[rc]);
	}
	inline void Add(int l, int r, int vl)
	{
		val = vl;

		if (l < 0)
			l += n, r += n;
		assert(r - n <= l);
		assert(l >= 0);

		if (r <= n)
		{
			le = l; ri = r;
			Adder();
		}
		else
		{
			le = l; ri = n;
			Adder();
			le = 0; ri = r - n;
			Adder();
		}
	}
	void Extract(int id = 1, int l = 0, int r = n)
	{
		assert(MN[id] >= 0);
		if (MN[id] > 0)
			return ;
		if (r - l < 2)
			return void(res.push_back(l));
		Shift(id);
		Extract(lc, l, md);
		Extract(rc, md, r);
	}
};
pair < int , int > F[N];
SEGT SG[2];
/*bitset < N > Ad[N];
int Mark[N];
void DFS(int v)
{
	Mark[v] = 1;
	for (int u = 0; u < n; u ++)
		if (Ad[v][u])
		{
			if (!Mark[u])
				DFS(u);
			Ad[v] |= Ad[u];
		}
}*/
int MN[N * 4], MX[N * 4];
int segn;
inline void Do(int i, int av, int bv)
{
	i += segn;
	if (av < 0)
		av += n, bv += n;
	MN[i] = av;
	MX[i] = bv;
	for (; i; i >>= 1)
	{
		MN[i >> 1] = min(MN[i], MN[i ^ 1]);
		MX[i >> 1] = max(MX[i], MX[i ^ 1]);
	}
}
inline pair < int , int > Get(int l, int r)
{
	pair < int , int > ret = {l, r};
	for (l += segn, r += segn; l < r; l >>= 1, r >>= 1)
	{
		if (l & 1)
		{
			ret.first = min(ret.first, MN[l]);
			ret.second = max(ret.second, MX[l]);
			l ++;
		}
		if (r & 1)
		{
			r --;
			ret.first = min(ret.first, MN[r]);
			ret.second = max(ret.second, MX[r]);
		}
	}
	if (ret.first < 0)
		ret.first += n, ret.second += n;
	if (ret.second >= ret.first + n)
		ret = {0, n};
	return ret;
}
inline pair < int , int > Query(int le, int ri)
{
	int mn = le;
	int mx = ri;
	assert(le >= 0 && ri <= n + n);
	assert(le >= 0);
	pair < int , int > ret = Get(le, ri);
	mn = min(mn, ret.first);
	mx = max(mx, ret.second);
	ret = Get(max(le - n, 0), max(ri - n, 0));
	mn = min(mn, ret.first);
	mx = max(mx, ret.second);
	ret = Get(min(le + n, segn), min(ri + n, segn));
	mn = min(mn, ret.first);
	mx = max(mx, ret.second);
	if (mn < 0)
		mn += n, mx += n;
	if (mn >= n)
		mn -= n, mx -= n;
	mx = min(mx, n + n);
	return make_pair(mn, mx);
}

void init(int _k, vector < int > _r)
{
	k = _k;
	n = (int)_r.size();
	for (int i = 0; i < n; i ++)
		A[i] = _r[i];

	for (int w = 0; w <= 0; w ++)
	{
		wset = w;
		SG[0].Reset();
		SG[1].Reset();
		for (int i = 0; i < n; i ++)
		{
			if (A[i])
			{
				SG[1].Add(i, i + 1, 1);
				SG[0].Add(i, i + 1, A[i]);
			}
			else
			{
				SG[1].Add(i + 1, i + k, 1);
				SG[0].Add(i, i + 1, N);
			}
		}

		vector < int > M(n, 0);
		for (int __ = 0; __ < n; __ ++)
		{
			res.clear();
			SG[1].Extract();
			for (int i : res)
				Todo.push(i);
			res.clear();
			assert((int)Todo.size());
			int i = Todo.front();
			M[i] = 1;
          Todo.pop();

			/*for (int j = i - k + 1; j < i + k; j ++)
			{
				int tt = j;
				if (tt < 0) tt += n;
				if (tt >= n) tt -= n;
				if (M[tt])
					continue;
				Ad[tt][i] = 1;
			}*/
			F[i] = {i - k + 1, i + k};


			P[w][__] = i;
			rev[w][i] = __;

			SG[1].Add(i, i + 1, N);
			SG[0].Add(i - k + 1, i, -1);
			SG[1].Add(i + 1, i + k, -1);

			res.clear();
			SG[0].Extract();
			for (int j : res)
			{
				SG[1].Add(j, j + 1, -1);
				SG[1].Add(j + 1, j + k, 1);
				SG[0].Add(j, j + 1, N);

			}
			res.clear();
		}

		/*for (int i = 0; i < n; i ++)
		  printf("%d ", P[w][i]);
		 printf("\n");*/
	}
	/*for (int i = 0; i < n; i ++)
		if (!Mark[i])
			DFS(i);*/

/*	segn = n + n;

	memset(MN, 63, sizeof(MN));
	memset(MX, -63, sizeof(MX));
	for (int h = n - 1; h >= 0; h --)
	{
		int i = P[0][h];

//		printf("=== %d :: %d , %d\n", i, F[i].first, F[i].second);
		if (F[i].first < 0)
			F[i].first += n, F[i].second += n;
		if (F[i].first >= n)
			F[i].first -= n, F[i].second -= n;
		F[i].second = min(F[i].second, segn);

		F[i] = Query(F[i].first, F[i].second);
		if (F[i].first < 0)
			F[i].first += n, F[i].second += n;
		if (F[i].first >= n)
			F[i].first -= n, F[i].second -= n;
		F[i].second = min(F[i].second, segn);
		Do(i, F[i].first, F[i].second);
		Do(i + n, F[i].first, F[i].second);

//		printf("%d :: %d , %d\n", i, F[i].first, F[i].second);
	}*/
	return ;

/*	for (int i = 0; i < n; i ++)
	{
		printf("%d :: %d\n", F[i].first, F[i].second);
	}*/
}
inline bool Check(pair < int , int > ff, int i)
{
	int l = ff.first;
	int r = ff.second;

	if (l < 0)
		l += n, r += n;
	if (l <= i && i < r)
		return 1;
	if (l <= i + n && i + n < r)
		return 1;
	return 0;
}

int compare_plants(int a, int b)
{
	if (rev[0][a] < rev[0][b])
		return 1;
	return -1;
	/*if (Ad[a][b])
		return -1;
	if (Ad[b][a])
		return 1;
	return 0;*/
	if (rev[0][a] < rev[0][b] && Check(F[a], b))
		return 1;
	if (rev[0][b] < rev[0][a] && Check(F[b], a))
		return -1;
	return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12928 KB Output is correct
2 Correct 7 ms 12928 KB Output is correct
3 Correct 7 ms 12928 KB Output is correct
4 Runtime error 24 ms 25856 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12928 KB Output is correct
2 Correct 7 ms 12928 KB Output is correct
3 Correct 8 ms 12928 KB Output is correct
4 Correct 8 ms 12928 KB Output is correct
5 Correct 8 ms 12928 KB Output is correct
6 Correct 11 ms 12928 KB Output is correct
7 Correct 102 ms 15864 KB Output is correct
8 Correct 11 ms 12928 KB Output is correct
9 Correct 11 ms 12928 KB Output is correct
10 Correct 91 ms 15864 KB Output is correct
11 Correct 85 ms 15768 KB Output is correct
12 Correct 86 ms 15992 KB Output is correct
13 Correct 94 ms 15992 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12928 KB Output is correct
2 Correct 7 ms 12928 KB Output is correct
3 Correct 8 ms 12928 KB Output is correct
4 Correct 8 ms 12928 KB Output is correct
5 Correct 8 ms 12928 KB Output is correct
6 Correct 11 ms 12928 KB Output is correct
7 Correct 102 ms 15864 KB Output is correct
8 Correct 11 ms 12928 KB Output is correct
9 Correct 11 ms 12928 KB Output is correct
10 Correct 91 ms 15864 KB Output is correct
11 Correct 85 ms 15768 KB Output is correct
12 Correct 86 ms 15992 KB Output is correct
13 Correct 94 ms 15992 KB Output is correct
14 Correct 143 ms 16476 KB Output is correct
15 Correct 1049 ms 21668 KB Output is correct
16 Correct 143 ms 16732 KB Output is correct
17 Correct 1055 ms 21588 KB Output is correct
18 Correct 654 ms 21496 KB Output is correct
19 Correct 759 ms 21496 KB Output is correct
20 Correct 964 ms 21496 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 27 ms 25848 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12928 KB Output is correct
2 Correct 8 ms 12928 KB Output is correct
3 Runtime error 26 ms 25856 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12928 KB Output is correct
2 Correct 8 ms 12928 KB Output is correct
3 Runtime error 26 ms 25856 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12928 KB Output is correct
2 Correct 7 ms 12928 KB Output is correct
3 Correct 7 ms 12928 KB Output is correct
4 Runtime error 24 ms 25856 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -