oj.uz

Submission #303162

# Submission time Handle Problem Language Result Execution time Memory
303162 2020-09-19T23:56:57 Z tutis Comparing Plants (IOI20_plants) C++17
32 / 100
 1618 ms 49144 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
vector<int>k0, k1;
int K, n;
vector<int>A;
struct ST
{
	int l, r;
	pair<int, int> mn;
	pair<int, int> mn1;
	int del = 0;
	int del1 = 0;
	ST *left, *right;
	ST(int l, int r, vector<int>&a): l(l), r(r)
	{
		if (l < r)
		{
			left = new ST(l, (l + r) / 2, a);
			right = new ST((l + r) / 2 + 1, r, a);
			mn = min(left->mn, right->mn);
		}
		else
			mn = {a[l], l};
		mn1 = mn;
	}
	void fix()
	{
		if (l == r)
		{
			mn.first += del;
			del = 0;
		}
		else
		{
			mn.first += del;
			left->del += del;
			right->del += del;
			del = 0;
		}
	}
	void fix1()
	{
		if (l == r)
		{
			mn1.first += del1;
			del1 = 0;
		}
		else
		{
			mn1.first += del1;
			left->del1 += del1;
			right->del1 += del1;
			del1 = 0;
		}
	}
	void add(int x, int y, int w)
	{
		if (x <= l && r <= y)
		{
			del += w;
			return fix();
		}
		fix();
		if (r < x || y < l)
			return;
		left->add(x, y, w);
		right->add(x, y, w);
		mn = min(left->mn, right->mn);
	}
	void add1(int x, int y, int w)
	{
		if (x <= l && r <= y)
		{
			del1 += w;
			return fix1();
		}
		fix1();
		if (r < x || y < l)
			return;
		left->add1(x, y, w);
		right->add1(x, y, w);
		mn1 = min(left->mn1, right->mn1);
	}
};
int id[200000];
int N;
struct inter
{
	int a, b;
	inter() {}
	inter(int x, int y)
	{
		a = x;
		b = y;
	}
	bool contains(int c)
	{
		if (a <= c && c <= b)
			return true;
		if (a > b)
			if (c >= a || c <= b)
				return true;
		return false;
	}
};
inter merge(inter a, inter b)
{
	if (a.a == -1)
		return b;
	if (b.a == -1)
		return a;
	if (a.a <= a.b && b.a <= b.b)
		return inter({min(a.a, b.a), max(a.b, b.b)});
	if (a.a < a.b && b.a < b.b)
	{
		int x = min(a.a, b.a);
		int y = max(a.b, b.b);
		if (x <= y) return inter(1, 0);
		return inter(x, y);
	}
	if (a.a < a.b)
	{
		if (b.contains(a.a) || b.contains(a.a - 1))
		{
			int x = min(a.a, b.a);
			if (x <= a.b)
				return inter(1, 0);
			return inter(x, a.b);
		}
		else
		{
			int y = max(a.b, b.b);
			if (a.a <= y)
				return inter(1, 0);
			return inter(a.a, y);
		}
	}
}
struct ST1
{
	int l, r;
	inter xx;
	ST1 *left, *right;
	ST1(int l, int r): l(l), r(r)
	{
		if (l < r)
		{
			left = new ST1(l, (l + r) / 2);
			right = new ST1((l + r) / 2 + 1, r);
		}
		xx = inter(l, r);
	}
	void set(int i, inter g)
	{
		if (l == r)
		{
			xx = g;
		}
		else
		{
			if (i <= (l + r) / 2)
				left->set(i, g);
			else
				right->set(i, g);
			xx = merge(left->xx, right->xx);
		}
	}
	inter get(int x, int y)
	{
		if (x <= l && r <= y)
			return xx;
		if (y < l || r < x)
			return inter(-1, -1);
		return merge(left->get(x, y), right->get(x, y));
	}
} mediss(0, 200000);
inter gett(int x, int y)
{
	while (y >= n)
	{
		x -= n;
		y -= n;
	}
	while (x < 0)
	{
		x += n;
		y += n;
	}
	if (y < n)
	{
		return mediss.get(x, y);
	}
	else
	{
		return merge(mediss.get(x, n - 1), mediss.get(0, y - n));
	}
}
void init(int k, vector<int> r)
{
	K = k;
	n = r.size();
	N = n;
	if (k == 2)
	{
		k0 = k1 = vector<int>(n, 0);
		for (int t = 0; t < 2; t++)
			for (int i = n - 1; i >= 0; i--)
			{
				if (r[i] == 0)
					k0[i] = 1 + k0[(i + 1) % n];
				else
					k1[i] = 1 + k1[(i + 1) % n];
			}
		return;
	}
	if (2 * k > n)
	{
		ST medis(0, n - 1, r);
		auto add = [&](int x, int y, int w)
		{
			while (y >= n)
			{
				x -= n;
				y -= n;
			}
			while (x < 0)
			{
				x += n;
				y += n;
			}
			if (y < n)
			{
				medis.add(x, y, w);
			}
			else
			{
				medis.add(x, n - 1, w);
				medis.add(0, y - n, w);
			}
		};
		auto add1 = [&](int x, int y, int w)
		{
			while (y >= n)
			{
				x -= n;
				y -= n;
			}
			while (x < 0)
			{
				x += n;
				y += n;
			}
			if (y < n)
			{
				medis.add1(x, y, w);
			}
			else
			{
				medis.add1(x, n - 1, w);
				medis.add1(0, y - n, w);
			}
		};
		while (medis.mn1.first == 0)
		{
			int i = medis.mn1.second;
			add(i + 1, i + (k - 1), 1);
			add1(i, i, 1);
		}
		A = vector<int>(n, -1);
		for (int tt = 0; tt < n; tt++)
		{
			while (medis.mn1.first == 0)
			{
				int i = medis.mn1.second;
				add(i + 1, i + (k - 1), 1);
				add1(i, i, 1);
			}
			int i = medis.mn.second;
			add(i + 1, i + (k - 1), -1);
			add(i - (k - 1), i - 1, -1);
			add1(i - (k - 1), i - 1, -1);
			A[i] = tt;
			add(i, i, n + 10000);
			add1(i, i, n + 10000);
			r[i] = n + 100;
		}
		return;
	}
	ST medis(0, n - 1, r);
	auto add = [&](int x, int y, int w)
	{
		while (y >= n)
		{
			x -= n;
			y -= n;
		}
		while (x < 0)
		{
			x += n;
			y += n;
		}
		if (y < n)
		{
			medis.add(x, y, w);
		}
		else
		{
			medis.add(x, n - 1, w);
			medis.add(0, y - n, w);
		}
	};
	auto add1 = [&](int x, int y, int w)
	{
		while (y >= n)
		{
			x -= n;
			y -= n;
		}
		while (x < 0)
		{
			x += n;
			y += n;
		}
		if (y < n)
		{
			medis.add1(x, y, w);
		}
		else
		{
			medis.add1(x, n - 1, w);
			medis.add1(0, y - n, w);
		}
	};
	while (medis.mn1.first == 0)
	{
		int i = medis.mn1.second;
		add(i + 1, i + (k - 1), 1);
		add1(i, i, 1);
	}
	vector<int>K;
	for (int tt = 0; tt < n; tt++)
	{
		while (medis.mn1.first == 0)
		{
			int i = medis.mn1.second;
			add(i + 1, i + (k - 1), 1);
			add1(i, i, 1);
		}
		int i = medis.mn.second;
		add(i + 1, i + (k - 1), -1);
		add(i - (k - 1), i - 1, -1);
		add1(i - (k - 1), i - 1, -1);
		add(i, i, n + 10000);
		add1(i, i, n + 10000);
		id[i] = tt;
		K.push_back(i);
		r[i] = n + 100;
	}
	reverse(K.begin(), K.end());
	vector<int>ok;
	for (int i : K)
	{
		mediss.set(i, gett(i - (k - 1), i + (k - 1)));
	}
}

int compare_plants(int x, int y)
{
	assert(x < y);
	if (K == 2)
	{
		if (k0[x] >= y - x)
			return 1;
		if (k1[x] >= y - x)
			return -1;
		if (k0[y] >= n - y + x)
			return -1;
		if (k1[y] >= n - y + x)
			return 1;
		return 0;
	}
	if (!A.empty())
	{
		if (A[x] < A[y])
			return 1;
		else
			return -1;
	}
	if (id[x] > id[y])
		return -compare_plants(y, x);
	if (mediss.get(x, x).contains(y))
		return 1;
	return 0;
}

Compilation message

plants.cpp: In function 'inter merge(inter, inter)':
plants.cpp:139:1: warning: control reaches end of non-void function [-Wreturn-type]
  139 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 19072 KB Output is correct
2 Correct 22 ms 19064 KB Output is correct
3 Correct 22 ms 19064 KB Output is correct
4 Correct 22 ms 19072 KB Output is correct
5 Correct 22 ms 19068 KB Output is correct
6 Correct 86 ms 21900 KB Output is correct
7 Correct 103 ms 22392 KB Output is correct
8 Correct 128 ms 24568 KB Output is correct
9 Correct 130 ms 24568 KB Output is correct
10 Correct 128 ms 24568 KB Output is correct
11 Correct 127 ms 24568 KB Output is correct
12 Correct 131 ms 24568 KB Output is correct
13 Correct 125 ms 24568 KB Output is correct
14 Correct 125 ms 24732 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 19072 KB Output is correct
2 Correct 22 ms 19064 KB Output is correct
3 Correct 22 ms 19072 KB Output is correct
4 Correct 24 ms 19072 KB Output is correct
5 Correct 23 ms 19064 KB Output is correct
6 Correct 27 ms 19328 KB Output is correct
7 Correct 116 ms 22648 KB Output is correct
8 Correct 23 ms 19192 KB Output is correct
9 Correct 26 ms 19328 KB Output is correct
10 Correct 116 ms 22648 KB Output is correct
11 Correct 105 ms 22520 KB Output is correct
12 Correct 106 ms 22776 KB Output is correct
13 Correct 115 ms 22648 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 19072 KB Output is correct
2 Correct 22 ms 19064 KB Output is correct
3 Correct 22 ms 19072 KB Output is correct
4 Correct 24 ms 19072 KB Output is correct
5 Correct 23 ms 19064 KB Output is correct
6 Correct 27 ms 19328 KB Output is correct
7 Correct 116 ms 22648 KB Output is correct
8 Correct 23 ms 19192 KB Output is correct
9 Correct 26 ms 19328 KB Output is correct
10 Correct 116 ms 22648 KB Output is correct
11 Correct 105 ms 22520 KB Output is correct
12 Correct 106 ms 22776 KB Output is correct
13 Correct 115 ms 22648 KB Output is correct
14 Correct 195 ms 24696 KB Output is correct
15 Correct 1588 ms 49144 KB Output is correct
16 Correct 200 ms 24696 KB Output is correct
17 Correct 1618 ms 48800 KB Output is correct
18 Correct 1074 ms 49016 KB Output is correct
19 Correct 1056 ms 49016 KB Output is correct
20 Correct 1328 ms 49020 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 19072 KB Output is correct
2 Runtime error 47 ms 38544 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 19072 KB Output is correct
2 Correct 21 ms 19072 KB Output is correct
3 Correct 23 ms 19072 KB Output is correct
4 Runtime error 48 ms 38524 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 19072 KB Output is correct
2 Correct 21 ms 19072 KB Output is correct
3 Correct 22 ms 19072 KB Output is correct
4 Incorrect 22 ms 19072 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 19072 KB Output is correct
2 Correct 22 ms 19064 KB Output is correct
3 Correct 22 ms 19064 KB Output is correct
4 Correct 22 ms 19072 KB Output is correct
5 Correct 22 ms 19068 KB Output is correct
6 Correct 86 ms 21900 KB Output is correct
7 Correct 103 ms 22392 KB Output is correct
8 Correct 128 ms 24568 KB Output is correct
9 Correct 130 ms 24568 KB Output is correct
10 Correct 128 ms 24568 KB Output is correct
11 Correct 127 ms 24568 KB Output is correct
12 Correct 131 ms 24568 KB Output is correct
13 Correct 125 ms 24568 KB Output is correct
14 Correct 125 ms 24732 KB Output is correct
15 Correct 22 ms 19072 KB Output is correct
16 Correct 22 ms 19064 KB Output is correct
17 Correct 22 ms 19072 KB Output is correct
18 Correct 24 ms 19072 KB Output is correct
19 Correct 23 ms 19064 KB Output is correct
20 Correct 27 ms 19328 KB Output is correct
21 Correct 116 ms 22648 KB Output is correct
22 Correct 23 ms 19192 KB Output is correct
23 Correct 26 ms 19328 KB Output is correct
24 Correct 116 ms 22648 KB Output is correct
25 Correct 105 ms 22520 KB Output is correct
26 Correct 106 ms 22776 KB Output is correct
27 Correct 115 ms 22648 KB Output is correct
28 Correct 195 ms 24696 KB Output is correct
29 Correct 1588 ms 49144 KB Output is correct
30 Correct 200 ms 24696 KB Output is correct
31 Correct 1618 ms 48800 KB Output is correct
32 Correct 1074 ms 49016 KB Output is correct
33 Correct 1056 ms 49016 KB Output is correct
34 Correct 1328 ms 49020 KB Output is correct
35 Correct 22 ms 19072 KB Output is correct
36 Runtime error 47 ms 38544 KB Execution killed with signal 11
37 Halted 0 ms 0 KB -