oj.uz

Submission #944449

# Submission time Handle Problem Language Result Execution time Memory
944449 2024-03-12T17:55:07 Z daoquanglinh2007 Nicelines (RMI20_nicelines) C++17
77.7582 / 100
 50 ms 936 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, MAX_DEP = 32;

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

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

ll 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){
	va.clear();
	vb.clear();
	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 444 KB Output is correct
2 Correct 1 ms 444 KB Output is correct
3 Correct 1 ms 448 KB Output is correct
4 Correct 1 ms 688 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 432 KB Output is correct
2 Correct 2 ms 696 KB Output is correct
3 Correct 2 ms 696 KB Output is correct
4 Correct 2 ms 432 KB Output is correct

Subtask #3
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 452 KB Output is correct
2 Runtime error 2 ms 704 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 35 ms 700 KB Output is partially correct
2 Partially correct 37 ms 448 KB Output is partially correct
3 Partially correct 30 ms 696 KB Output is partially correct
4 Partially correct 34 ms 700 KB Output is partially correct

Subtask #5
21.1162429669 / 23.0

# Verdict Execution time Memory Grader output
1 Partially correct 11 ms 448 KB Output is partially correct
2 Partially correct 13 ms 444 KB Output is partially correct
3 Partially correct 14 ms 692 KB Output is partially correct
4 Partially correct 12 ms 448 KB Output is partially correct

Subtask #6
18.4794436341 / 27.0

# Verdict Execution time Memory Grader output
1 Partially correct 35 ms 700 KB Output is partially correct
2 Partially correct 37 ms 448 KB Output is partially correct
3 Partially correct 30 ms 696 KB Output is partially correct
4 Partially correct 34 ms 700 KB Output is partially correct
5 Partially correct 11 ms 448 KB Output is partially correct
6 Partially correct 13 ms 444 KB Output is partially correct
7 Partially correct 14 ms 692 KB Output is partially correct
8 Partially correct 12 ms 448 KB Output is partially correct
9 Partially correct 50 ms 708 KB Output is partially correct
10 Partially correct 42 ms 936 KB Output is partially correct
11 Partially correct 39 ms 696 KB Output is partially correct
12 Partially correct 36 ms 436 KB Output is partially correct