oj.uz

Submission #944455

# Submission time Handle Problem Language Result Execution time Memory
944455 2024-03-12T17:58:37 Z daoquanglinh2007 Nicelines (RMI20_nicelines) C++17
77.7582 / 100
 38 ms 704 KB 
#include <bits/stdc++.h>
#include "nice_lines.h"
using namespace std;
 
#define ll long long
#define ld long double
#define pii pair <int, int>
#define pld pair <ld, ld>
#define fi first
#define se second
#define mp make_pair
 
const ll LIM = 1e4;

const ld EPS = 1e-9, inf = 1e18;

struct line{
	ld a, b, c;
};

ll MAX_DEP = 32, x0 = 2*LIM+10;
vector <int> va, vb;
vector <ld> pos, neg;
set <pii> S;
 
void get(ld y){
	int b = int(round(y+x0*LIM+LIM))%x0-LIM, a = int(round(y-b)/(ld)x0);
	if (!S.count(mp(a, b))){
		va.push_back(a);
		vb.push_back(b);
		S.insert(mp(a, b));
		if (x0 > 0) pos.push_back(y); else neg.push_back(y);
	}
}
 
void dnc(int dep, ld l, ld r, ld fl, ld fr){
	if (dep == MAX_DEP){
		get((l+r)/2.0);
		return;
	}
	ld mid = (l+r)/2.0;
	if (fl == +inf) fl = query(x0, l);
	if (fr == +inf) fr = query(x0, r);
	ld fmid = query(x0, mid);
	if (abs(2.0*fmid - (fl+fr)) <= EPS) return;
	dnc(dep+1, l, mid, fl, fmid);
	dnc(dep+1, mid, r, fmid, fr);
}

line calc(pld A, pld B){
	line d;
	d.a = A.se-B.se, d.b = B.fi-A.fi, d.c = -A.fi*(A.se-B.se)-A.se*(B.fi-A.fi);
	return d;
}
 
void solve(int subtask_id, int N){
	if (N == 3) MAX_DEP = 30;
	dnc(0, -2*LIM*(x0+1), 2*LIM*(x0+1), +inf, +inf);
	if (N == 3){
		x0 = -x0;
		dnc(0, -2*LIM*(-x0+1), 2*LIM*(-x0+1), +inf, +inf);
		va.clear(); vb.clear();
		assert((int)pos.size() >= N);
		assert((int)neg.size() >= N);
		sort(pos.begin(), pos.end(), greater <ld>());
		sort(neg.begin(), neg.end());
		for (int i = 0; i < N; i++){
			line d = calc(mp(-x0, pos[i]), mp(x0, neg[i]));
			int a = round(-d.a/d.b), b = round(-d.c/d.b);
			va.push_back(a);
			vb.push_back(b);
		}
	}
	the_lines_are(va, vb);
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 448 KB Output is correct
2 Correct 1 ms 448 KB Output is correct
3 Correct 1 ms 436 KB Output is correct
4 Correct 1 ms 432 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 436 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 1 ms 448 KB Output is correct
4 Correct 1 ms 452 KB Output is correct

Subtask #3
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 448 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #4
14.1625026041 / 19.0

# Verdict Execution time Memory Grader output
1 Partially correct 27 ms 700 KB Output is partially correct
2 Partially correct 27 ms 704 KB Output is partially correct
3 Partially correct 33 ms 696 KB Output is partially correct
4 Partially correct 29 ms 700 KB Output is partially correct

Subtask #5
21.1162429669 / 23.0

# Verdict Execution time Memory Grader output
1 Partially correct 13 ms 688 KB Output is partially correct
2 Partially correct 14 ms 452 KB Output is partially correct
3 Partially correct 11 ms 448 KB Output is partially correct
4 Partially correct 10 ms 448 KB Output is partially correct

Subtask #6
18.4794436341 / 27.0

# Verdict Execution time Memory Grader output
1 Partially correct 27 ms 700 KB Output is partially correct
2 Partially correct 27 ms 704 KB Output is partially correct
3 Partially correct 33 ms 696 KB Output is partially correct
4 Partially correct 29 ms 700 KB Output is partially correct
5 Partially correct 13 ms 688 KB Output is partially correct
6 Partially correct 14 ms 452 KB Output is partially correct
7 Partially correct 11 ms 448 KB Output is partially correct
8 Partially correct 10 ms 448 KB Output is partially correct
9 Partially correct 35 ms 700 KB Output is partially correct
10 Partially correct 35 ms 696 KB Output is partially correct
11 Partially correct 38 ms 700 KB Output is partially correct
12 Partially correct 37 ms 696 KB Output is partially correct