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Submission #151023

# Submission time Handle Problem Language Result Execution time Memory
151023 2019-09-01T15:07:52 Z bogdan10bos Organizing the Best Squad (FXCUP4_squad) C++17
47 / 100
 3000 ms 54236 KB 
#include "squad.h"
#include <bits/stdc++.h>

typedef long double LD;

using namespace std;

const LD eps = 1e-6;
const int LVL = 70;

class LiChao
{
public:
	struct Line
	{
		LD a = 0, b = 0;
		int id = 0;

		Line() { ; }
		Line(LD _a, LD _b, int _id) { a = _a, b = _b, id = _id; }

		LD operator()(LD x)
		{
			return a * x + b;
		}

		const bool operator== (const Line &l) const
		{
			return (id == l.id);
		}
	};

	struct Node
	{
		Line unu, doi;
		Node *l, *r;

		Node(Line a, Line b, Node *_l, Node *_r)
		{
			unu = a, doi = b, l = _l, r = _r;
		}
	};

	Line df;
	Node *root;

	LiChao()
	{
		df = Line(0, 0, -1);
		root = new Node(df, df, 0, 0);
	}

	void insert(Node *&nod, LD st, LD dr, Line l, int lvl)
	{
		if(l == df)	return;
		if(nod == 0)
		{
			nod = new Node(l, df, 0, 0);
			return;
		}

		LD mij = (st + dr) / 2.0;
		if(nod->unu(mij) < l(mij))
		{
			swap(nod->unu, l);
			swap(nod->doi, l);
		}
		else if(nod->doi(mij) < l(mij))
			swap(nod->doi, l);

		if(l == df)	return;
		if(lvl >= LVL)	return;

		if(l(st) > max(nod->unu(st), nod->doi(st)))
			insert(nod->l, st, mij, l, lvl + 1);
		if(l(dr) > max(nod->unu(dr), nod->doi(dr)))
			insert(nod->r, mij, dr, l, lvl + 1);
	}

	void insert(LD a, LD b, int id)
	{
		insert(root, 0, 1e9, Line(a, b, id), 0);
	}

	pair<Line, Line> query(Node *nod, LD st, LD dr, LD x, int lvl)
	{
		if(nod == 0 || lvl > LVL)	return {df, df};

		Line unu = nod->unu, doi = nod->doi;
		if(unu(x) < doi(x))	swap(unu, doi);
		pair<Line, Line> nxt = {df, df};

		LD mij = st + (dr - st) / 2;
		if(x < mij)	nxt = query(nod->l, st, mij, x, lvl + 1);
		else	nxt = query(nod->r, mij, dr, x, lvl + 1);

		if(nxt.first(x) > unu(x))
		{
			swap(doi, nxt.first);
			swap(unu, doi);
		}
		else if(nxt.first(x) > doi(x))
			swap(doi, nxt.first);

		if(nxt.second(x) > unu(x))
		{
			swap(doi, nxt.second);
			swap(unu, doi);
		}
		else if(nxt.second(x) > doi(x))
			swap(doi, nxt.second);

		return {unu, doi};
	}

	pair<Line, Line> query(LD x)
	{
		return query(root, 0, 1e9, x, 0);
	}
};
LiChao att, def;

vector<int> AA, DD, PP;
void Init(vector<int> A, vector<int> D, vector<int> P)
{
	AA = A, DD = D, PP = P;
	int N = A.size();
	for(int i = 0; i < N; i++)
	{
		att.insert(A[i], P[i], i);
		def.insert(D[i], P[i], i);
	}
}

long long calc(int a, int d, int X, int Y)
{
	if(a == d)	return -1;
	long long ans = 1LL * X * (AA[a] + DD[d]) + 1LL * Y * (PP[a] + PP[d]);
	return ans;
}

long long BestSquad(int X, int Y)
{
	LD frac = LD(X) / LD(Y);
	auto at = att.query(frac);
	auto df = def.query(frac);

	vector<int> ids;
	ids.push_back(at.first.id);
	ids.push_back(at.second.id);
	ids.push_back(df.first.id);
	ids.push_back(df.second.id);

	long long ans = -1;
	ans = max(ans, calc(ids[0], ids[2], X, Y));
	ans = max(ans, calc(ids[1], ids[2], X, Y));
	ans = max(ans, calc(ids[0], ids[3], X, Y));
	return ans;
}

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 189 ms 10872 KB Output is correct
4 Correct 182 ms 11000 KB Output is correct
5 Correct 84 ms 3832 KB Output is correct
6 Correct 1590 ms 53592 KB Output is correct
7 Correct 1633 ms 53604 KB Output is correct
8 Correct 1616 ms 53844 KB Output is correct

Subtask #2
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 7 ms 504 KB Output is correct
3 Correct 687 ms 13388 KB Output is correct
4 Correct 603 ms 13332 KB Output is correct
5 Correct 70 ms 1784 KB Output is correct
6 Correct 2176 ms 34544 KB Output is correct
7 Correct 2158 ms 34632 KB Output is correct
8 Correct 2120 ms 34684 KB Output is correct

Subtask #3
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 189 ms 10872 KB Output is correct
4 Correct 182 ms 11000 KB Output is correct
5 Correct 84 ms 3832 KB Output is correct
6 Correct 1590 ms 53592 KB Output is correct
7 Correct 1633 ms 53604 KB Output is correct
8 Correct 1616 ms 53844 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 7 ms 504 KB Output is correct
11 Correct 687 ms 13388 KB Output is correct
12 Correct 603 ms 13332 KB Output is correct
13 Correct 70 ms 1784 KB Output is correct
14 Correct 2176 ms 34544 KB Output is correct
15 Correct 2158 ms 34632 KB Output is correct
16 Correct 2120 ms 34684 KB Output is correct
17 Correct 117 ms 2864 KB Output is correct
18 Correct 10 ms 504 KB Output is correct
19 Correct 882 ms 13380 KB Output is correct
20 Correct 857 ms 13432 KB Output is correct
21 Correct 148 ms 2912 KB Output is correct
22 Execution timed out 3090 ms 54236 KB Time limit exceeded
23 Halted 0 ms 0 KB -