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Submission #944433

# Submission time Handle Problem Language Result Execution time Memory
944433 2024-03-12T17:39:39 Z daoquanglinh2007 Nicelines (RMI20_nicelines) C++17
11 / 100
 31 ms 712 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 fi first
#define se second
#define mp make_pair
 
const ll LIM = 1e4, x0 = 2*LIM, MAX_DEP = 32;
 
const ld EPS = 1e-9, inf = 1e18;
 
vector <int> va, vb;
set <pii> S;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
 
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));
	}
}
 
void dnc(int dep, ld l, ld r, ld fl, ld fr){
	if (dep == MAX_DEP || (dep == MAX_DEP-1 && rng()%2 == 0)){
		get(l);
		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);
}
 
void solve(int subtask_id, int N){
	va.clear();
	vb.clear();
	dnc(0, -2*LIM*(x0+1), 2*LIM*(x0+1), +inf, +inf);
	the_lines_are(va, vb);
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 452 KB Output is correct
2 Correct 1 ms 440 KB Output is correct
3 Correct 1 ms 440 KB Output is correct
4 Correct 1 ms 440 KB Output is correct

Subtask #2
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 692 KB Output is correct
2 Correct 1 ms 456 KB Output is correct
3 Correct 1 ms 440 KB Output is correct
4 Incorrect 1 ms 452 KB Incorrect
5 Halted 0 ms 0 KB -

Subtask #3
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 692 KB Output is correct
2 Incorrect 1 ms 448 KB Incorrect
3 Halted 0 ms 0 KB -

Subtask #4
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 31 ms 704 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #5
0.0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 712 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 31 ms 704 KB Incorrect
2 Halted 0 ms 0 KB -