oj.uz

Submission #944450

# Submission time Handle Problem Language Result Execution time Memory
944450 2024-03-12T17:56:02 Z daoquanglinh2007 Nicelines (RMI20_nicelines) C++17
77.7582 / 100
 48 ms 944 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 = 40;
	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 436 KB Output is correct
2 Correct 1 ms 448 KB Output is correct
3 Correct 1 ms 444 KB Output is correct
4 Correct 1 ms 452 KB Output is correct

Subtask #2
13.0 / 13.0

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

Subtask #3
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 448 KB Output is correct
2 Runtime error 3 ms 688 KB Execution killed with signal 6
3 Halted 0 ms 0 KB -

Subtask #4
14.1625026041 / 19.0

# Verdict Execution time Memory Grader output
1 Partially correct 34 ms 432 KB Output is partially correct
2 Partially correct 33 ms 700 KB Output is partially correct
3 Partially correct 30 ms 448 KB Output is partially correct
4 Partially correct 28 ms 452 KB Output is partially correct

Subtask #5
21.1162429669 / 23.0

# Verdict Execution time Memory Grader output
1 Partially correct 16 ms 704 KB Output is partially correct
2 Partially correct 12 ms 944 KB Output is partially correct
3 Partially correct 11 ms 704 KB Output is partially correct
4 Partially correct 10 ms 704 KB Output is partially correct

Subtask #6
18.4794436341 / 27.0

# Verdict Execution time Memory Grader output
1 Partially correct 34 ms 432 KB Output is partially correct
2 Partially correct 33 ms 700 KB Output is partially correct
3 Partially correct 30 ms 448 KB Output is partially correct
4 Partially correct 28 ms 452 KB Output is partially correct
5 Partially correct 16 ms 704 KB Output is partially correct
6 Partially correct 12 ms 944 KB Output is partially correct
7 Partially correct 11 ms 704 KB Output is partially correct
8 Partially correct 10 ms 704 KB Output is partially correct
9 Partially correct 48 ms 452 KB Output is partially correct
10 Partially correct 45 ms 856 KB Output is partially correct
11 Partially correct 34 ms 684 KB Output is partially correct
12 Partially correct 34 ms 708 KB Output is partially correct