oj.uz

Submission #831625

# Submission time Handle Problem Language Result Execution time Memory
831625 2023-08-20T11:32:08 Z andrey27_sm Fountain Parks (IOI21_parks) C++17
15 / 100
 313 ms 59468 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
vector<pair<int,int>> cons[200001];
int mask_l[200001];
vector<int> u;
vector<int> v;
vector<int> a;
vector<int> b;
struct dsu{
	int sz = 0;
	vector<int> pr;
	int p(int v){
		if(pr[v] == v) return v;
		return pr[v] = p(pr[v]);
	}
	void un(int u,int v){
		u = p(u);
		v = p(v);
		if(u == v) return;
		pr[u] = v;
		sz++;
	}
} D;
struct edge{
	int x;
	int y;
	int type; // 0 - vert, 1 - hor;
	int a;
	int b;
};
int construct_roads(vector<int> x, vector<int> y) {
	int n = x.size();
	D.pr.resize(n);
	for (int i = 0; i < n; ++i)
	{
		D.pr[i] = i;
	}
	vector<edge> E;
	vector<pair<int,pair<int,int>>> x_d;
	vector<pair<int,pair<int,int>>> y_d;
	for (int i = 0; i < n; ++i)
	{
	 	x_d.push_back({x[i],{y[i],i}});
	 	y_d.push_back({y[i],{x[i],i}});
	} 
	sort(x_d.begin(), x_d.end());
	sort(y_d.begin(), y_d.end());
	for (int i = 1; i < n; ++i)
	{
		if(x_d[i].first == x_d[i-1].first and x_d[i].second.first-2 == x_d[i-1].second.first){
			E.push_back({x_d[i-1].first,x_d[i-1].second.first,0,x_d[i-1].second.second,x_d[i].second.second});
			D.un(x_d[i-1].second.second,x_d[i].second.second);
		}
	}
	for (int i = 1; i < n; ++i)
	{
		if(y_d[i].first == y_d[i-1].first and y_d[i].second.first-2 == y_d[i-1].second.first){
			E.push_back({y_d[i-1].second.first,y_d[i-1].first,1,y_d[i-1].second.second,y_d[i].second.second});
			D.un(y_d[i-1].second.second,y_d[i].second.second);
		}
	}
	if(D.sz != n-1) return 0;
	set<pair<int,int>> lines;
	set<pair<int,int>> points;
	sort(E.begin(),E.end(),[](auto a,auto b){
		if(a.x != b.x) return a.x < b.x;
		if(a.type != b.type) return a.type < b.type;
		return a.y < b.y;
	});
	for (int i = 0; i < E.size(); ++i)
	{
		if(E[i].type == 0) lines.insert({E[i].x,E[i].y});
	}
	for (int i = 0; i < E.size(); ++i)
	{
		//cout << E[i].x << " " << E[i].y << "   --\n";
		if(E[i].type == 0){
			if(points.count({E[i].x-1,E[i].y+1}) == 0){
				u.push_back(E[i].a);
				v.push_back(E[i].b);
				a.push_back(E[i].x-1);
				b.push_back(E[i].y+1);
				points.insert({E[i].x-1,E[i].y+1});
			}
			else if(points.count({E[i].x+1,E[i].y+1}) == 0){				
				u.push_back(E[i].a);
				v.push_back(E[i].b);
				a.push_back(E[i].x+1);
				b.push_back(E[i].y+1);
				points.insert({E[i].x+1,E[i].y+1});
			}
			else return 0;
		}
		else{
			int top = 0;
			if(points.count({E[i].x+1,E[i].y-1})) top = 1;
			else if(points.count({E[i].x+1,E[i].y+1})) top = 2;
			if(top == 0 and lines.count({E[i].x+2,E[i].y-2})) top = 2;
			if(top == 0 and lines.count({E[i].x+2,E[i].y})) top = 1;
			if(top%2 == 0){
				u.push_back(E[i].a);
				v.push_back(E[i].b);
				a.push_back(E[i].x+1);
				b.push_back(E[i].y-1);
				points.insert({E[i].x+1,E[i].y-1});
			}
			else{				
				u.push_back(E[i].a);
				v.push_back(E[i].b);
				a.push_back(E[i].x+1);
				b.push_back(E[i].y+1);
				points.insert({E[i].x+1,E[i].y+1});
			}
		}
	}
	//if(points.size() != n-1) return 0;
	build(u,v,a,b);
	return 1;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:71:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |  for (int i = 0; i < E.size(); ++i)
      |                  ~~^~~~~~~~~~
parks.cpp:75:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |  for (int i = 0; i < E.size(); ++i)
      |                  ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 104 ms 25472 KB Output is correct
10 Correct 11 ms 7056 KB Output is correct
11 Correct 50 ms 16020 KB Output is correct
12 Correct 16 ms 7988 KB Output is correct
13 Correct 15 ms 8844 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 114 ms 25476 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 104 ms 25472 KB Output is correct
10 Correct 11 ms 7056 KB Output is correct
11 Correct 50 ms 16020 KB Output is correct
12 Correct 16 ms 7988 KB Output is correct
13 Correct 15 ms 8844 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 114 ms 25476 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 313 ms 59468 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 4 ms 5332 KB Output is correct
26 Correct 3 ms 5332 KB Output is correct
27 Correct 4 ms 5384 KB Output is correct
28 Correct 119 ms 26332 KB Output is correct
29 Correct 196 ms 37304 KB Output is correct
30 Correct 228 ms 47756 KB Output is correct
31 Correct 292 ms 59464 KB Output is correct
32 Correct 2 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 2 ms 4884 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 2 ms 4948 KB Output is correct
40 Correct 2 ms 4948 KB Output is correct
41 Correct 2 ms 4948 KB Output is correct
42 Correct 2 ms 4960 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5204 KB Output is correct
45 Correct 108 ms 23984 KB Output is correct
46 Correct 166 ms 33192 KB Output is correct
47 Correct 166 ms 33236 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 104 ms 25472 KB Output is correct
10 Correct 11 ms 7056 KB Output is correct
11 Correct 50 ms 16020 KB Output is correct
12 Correct 16 ms 7988 KB Output is correct
13 Correct 15 ms 8844 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 114 ms 25476 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 313 ms 59468 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 4 ms 5332 KB Output is correct
26 Correct 3 ms 5332 KB Output is correct
27 Correct 4 ms 5384 KB Output is correct
28 Correct 119 ms 26332 KB Output is correct
29 Correct 196 ms 37304 KB Output is correct
30 Correct 228 ms 47756 KB Output is correct
31 Correct 292 ms 59464 KB Output is correct
32 Correct 2 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 2 ms 4884 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 2 ms 4948 KB Output is correct
40 Correct 2 ms 4948 KB Output is correct
41 Correct 2 ms 4948 KB Output is correct
42 Correct 2 ms 4960 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5204 KB Output is correct
45 Correct 108 ms 23984 KB Output is correct
46 Correct 166 ms 33192 KB Output is correct
47 Correct 166 ms 33236 KB Output is correct
48 Correct 3 ms 4948 KB Output is correct
49 Correct 3 ms 4948 KB Output is correct
50 Correct 2 ms 4948 KB Output is correct
51 Incorrect 2 ms 4948 KB Tree @(5, 5) appears more than once: for edges on positions 4 and 5
52 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 104 ms 25472 KB Output is correct
10 Correct 11 ms 7056 KB Output is correct
11 Correct 50 ms 16020 KB Output is correct
12 Correct 16 ms 7988 KB Output is correct
13 Correct 15 ms 8844 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 114 ms 25476 KB Output is correct
17 Correct 3 ms 4972 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 226 ms 41344 KB Output is correct
21 Correct 220 ms 41272 KB Output is correct
22 Correct 217 ms 41292 KB Output is correct
23 Correct 173 ms 35080 KB Output is correct
24 Correct 71 ms 13752 KB Output is correct
25 Correct 75 ms 21240 KB Output is correct
26 Correct 75 ms 21304 KB Output is correct
27 Correct 255 ms 45948 KB Output is correct
28 Correct 223 ms 45880 KB Output is correct
29 Correct 211 ms 36528 KB Output is correct
30 Correct 223 ms 36584 KB Output is correct
31 Correct 3 ms 4952 KB Output is correct
32 Incorrect 18 ms 7496 KB Tree @(185697, 20413) appears more than once: for edges on positions 109 and 116
33 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 104 ms 25472 KB Output is correct
10 Correct 11 ms 7056 KB Output is correct
11 Correct 50 ms 16020 KB Output is correct
12 Correct 16 ms 7988 KB Output is correct
13 Correct 15 ms 8844 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 114 ms 25476 KB Output is correct
17 Correct 236 ms 41868 KB Output is correct
18 Correct 223 ms 41908 KB Output is correct
19 Incorrect 224 ms 41256 KB Tree @(100001, 50003) appears more than once: for edges on positions 199994 and 199995
20 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 104 ms 25472 KB Output is correct
10 Correct 11 ms 7056 KB Output is correct
11 Correct 50 ms 16020 KB Output is correct
12 Correct 16 ms 7988 KB Output is correct
13 Correct 15 ms 8844 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 114 ms 25476 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 313 ms 59468 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 4 ms 5332 KB Output is correct
26 Correct 3 ms 5332 KB Output is correct
27 Correct 4 ms 5384 KB Output is correct
28 Correct 119 ms 26332 KB Output is correct
29 Correct 196 ms 37304 KB Output is correct
30 Correct 228 ms 47756 KB Output is correct
31 Correct 292 ms 59464 KB Output is correct
32 Correct 2 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 2 ms 4884 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 2 ms 4948 KB Output is correct
40 Correct 2 ms 4948 KB Output is correct
41 Correct 2 ms 4948 KB Output is correct
42 Correct 2 ms 4960 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5204 KB Output is correct
45 Correct 108 ms 23984 KB Output is correct
46 Correct 166 ms 33192 KB Output is correct
47 Correct 166 ms 33236 KB Output is correct
48 Correct 3 ms 4948 KB Output is correct
49 Correct 3 ms 4948 KB Output is correct
50 Correct 2 ms 4948 KB Output is correct
51 Incorrect 2 ms 4948 KB Tree @(5, 5) appears more than once: for edges on positions 4 and 5
52 Halted 0 ms 0 KB -