oj.uz

Submission #831681

# Submission time Handle Problem Language Result Execution time Memory
831681 2023-08-20T12:15:11 Z andrey27_sm Fountain Parks (IOI21_parks) C++17
5 / 100
 252 ms 48244 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]);
	}
	bool un(int u,int v){
		u = p(u);
		v = p(v);
		if(u == v) return 0 ;
		pr[u] = v;
		sz++;
		return 1;
	}
} 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){
			D.un(x_d[i-1].second.second,x_d[i].second.second);
			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});
		}
	}
	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){
			D.un(y_d[i-1].second.second,y_d[i].second.second);
			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});
		}
	}
	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});
	}
	assert(E.size() == n-1);
	for (int i = 0; i < E.size(); ++i)
	{
		//cout << E[i].x << " " << E[i].y << " " << E[i].type << " " << E[i].a << " " << E[i].b << "   --\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}) and points.count({E[i].x+1,E[i].y+1})) return 0;
			if(top == 0 and ((lines.count({E[i].x+2,E[i].y-2}) and lines.count({E[i].x+2,E[i].y})) or lines.count({E[i].x+2,E[i].y}))) top = 2;
			if(top == 0 and lines.count({E[i].x+2,E[i].y-2})) top = 1;
			if(top%2 == 0 and 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{
				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:72:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |  for (int i = 0; i < E.size(); ++i)
      |                  ~~^~~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from parks.cpp:2:
parks.cpp:76:18: warning: comparison of integer expressions of different signedness: 'std::vector<edge>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   76 |  assert(E.size() == n-1);
      |         ~~~~~~~~~^~~~~~
parks.cpp:77:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |  for (int i = 0; i < E.size(); ++i)
      |                  ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5000 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 2 ms 5004 KB Output is correct
4 Correct 3 ms 5004 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4996 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 112 ms 26280 KB Output is correct
10 Correct 12 ms 7104 KB Output is correct
11 Correct 51 ms 16328 KB Output is correct
12 Correct 15 ms 8080 KB Output is correct
13 Correct 13 ms 9216 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 4 ms 5140 KB Output is correct
16 Correct 104 ms 26228 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5000 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 2 ms 5004 KB Output is correct
4 Correct 3 ms 5004 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4996 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 112 ms 26280 KB Output is correct
10 Correct 12 ms 7104 KB Output is correct
11 Correct 51 ms 16328 KB Output is correct
12 Correct 15 ms 8080 KB Output is correct
13 Correct 13 ms 9216 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 4 ms 5140 KB Output is correct
16 Correct 104 ms 26228 KB Output is correct
17 Runtime error 9 ms 9936 KB Execution killed with signal 6
18 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5000 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 2 ms 5004 KB Output is correct
4 Correct 3 ms 5004 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4996 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 112 ms 26280 KB Output is correct
10 Correct 12 ms 7104 KB Output is correct
11 Correct 51 ms 16328 KB Output is correct
12 Correct 15 ms 8080 KB Output is correct
13 Correct 13 ms 9216 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 4 ms 5140 KB Output is correct
16 Correct 104 ms 26228 KB Output is correct
17 Runtime error 9 ms 9936 KB Execution killed with signal 6
18 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5000 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 2 ms 5004 KB Output is correct
4 Correct 3 ms 5004 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4996 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 112 ms 26280 KB Output is correct
10 Correct 12 ms 7104 KB Output is correct
11 Correct 51 ms 16328 KB Output is correct
12 Correct 15 ms 8080 KB Output is correct
13 Correct 13 ms 9216 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 4 ms 5140 KB Output is correct
16 Correct 104 ms 26228 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5004 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 251 ms 43816 KB Output is correct
21 Correct 247 ms 43512 KB Output is correct
22 Correct 252 ms 43496 KB Output is correct
23 Correct 189 ms 36864 KB Output is correct
24 Correct 77 ms 15464 KB Output is correct
25 Correct 81 ms 22932 KB Output is correct
26 Correct 84 ms 22828 KB Output is correct
27 Correct 224 ms 47512 KB Output is correct
28 Correct 221 ms 47480 KB Output is correct
29 Correct 198 ms 38132 KB Output is correct
30 Correct 204 ms 38128 KB Output is correct
31 Correct 2 ms 5004 KB Output is correct
32 Correct 17 ms 7756 KB Output is correct
33 Correct 33 ms 10624 KB Output is correct
34 Correct 228 ms 43688 KB Output is correct
35 Correct 6 ms 6008 KB Output is correct
36 Correct 22 ms 9588 KB Output is correct
37 Correct 45 ms 14320 KB Output is correct
38 Incorrect 93 ms 20696 KB Tree @(110191, 196749) appears more than once: for edges on positions 20620 and 20736
39 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5000 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 2 ms 5004 KB Output is correct
4 Correct 3 ms 5004 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4996 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 112 ms 26280 KB Output is correct
10 Correct 12 ms 7104 KB Output is correct
11 Correct 51 ms 16328 KB Output is correct
12 Correct 15 ms 8080 KB Output is correct
13 Correct 13 ms 9216 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 4 ms 5140 KB Output is correct
16 Correct 104 ms 26228 KB Output is correct
17 Runtime error 152 ms 48244 KB Execution killed with signal 6
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5000 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 2 ms 5004 KB Output is correct
4 Correct 3 ms 5004 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4996 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 112 ms 26280 KB Output is correct
10 Correct 12 ms 7104 KB Output is correct
11 Correct 51 ms 16328 KB Output is correct
12 Correct 15 ms 8080 KB Output is correct
13 Correct 13 ms 9216 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 4 ms 5140 KB Output is correct
16 Correct 104 ms 26228 KB Output is correct
17 Runtime error 9 ms 9936 KB Execution killed with signal 6
18 Halted 0 ms 0 KB -