oj.uz

Submission #831666

# Submission time Handle Problem Language Result Execution time Memory
831666 2023-08-20T12:04:24 Z andrey27_sm Fountain Parks (IOI21_parks) C++17
5 / 100
 247 ms 47280 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})) 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}) 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){
				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 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 5000 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 107 ms 26264 KB Output is correct
10 Correct 16 ms 7056 KB Output is correct
11 Correct 49 ms 16428 KB Output is correct
12 Correct 14 ms 8080 KB Output is correct
13 Correct 12 ms 9208 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 105 ms 26212 KB Output is correct

Subtask #2
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 3 ms 4956 KB Output is correct
4 Correct 2 ms 5000 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 107 ms 26264 KB Output is correct
10 Correct 16 ms 7056 KB Output is correct
11 Correct 49 ms 16428 KB Output is correct
12 Correct 14 ms 8080 KB Output is correct
13 Correct 12 ms 9208 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 105 ms 26212 KB Output is correct
17 Runtime error 6 ms 9864 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 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 5000 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 107 ms 26264 KB Output is correct
10 Correct 16 ms 7056 KB Output is correct
11 Correct 49 ms 16428 KB Output is correct
12 Correct 14 ms 8080 KB Output is correct
13 Correct 12 ms 9208 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 105 ms 26212 KB Output is correct
17 Runtime error 6 ms 9864 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 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 5000 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 107 ms 26264 KB Output is correct
10 Correct 16 ms 7056 KB Output is correct
11 Correct 49 ms 16428 KB Output is correct
12 Correct 14 ms 8080 KB Output is correct
13 Correct 12 ms 9208 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 105 ms 26212 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 3 ms 5000 KB Output is correct
20 Correct 247 ms 42384 KB Output is correct
21 Correct 229 ms 42468 KB Output is correct
22 Correct 243 ms 42408 KB Output is correct
23 Correct 179 ms 36260 KB Output is correct
24 Correct 73 ms 14644 KB Output is correct
25 Correct 79 ms 22200 KB Output is correct
26 Correct 76 ms 22196 KB Output is correct
27 Correct 222 ms 47012 KB Output is correct
28 Correct 216 ms 46956 KB Output is correct
29 Correct 213 ms 37632 KB Output is correct
30 Correct 210 ms 37580 KB Output is correct
31 Correct 2 ms 4948 KB Output is correct
32 Correct 17 ms 7624 KB Output is correct
33 Correct 34 ms 10308 KB Output is correct
34 Correct 231 ms 42328 KB Output is correct
35 Correct 8 ms 5940 KB Output is correct
36 Correct 21 ms 9664 KB Output is correct
37 Correct 50 ms 13984 KB Output is correct
38 Incorrect 95 ms 20512 KB Tree @(110191, 196751) appears more than once: for edges on positions 20621 and 20736
39 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 3 ms 4956 KB Output is correct
4 Correct 2 ms 5000 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 107 ms 26264 KB Output is correct
10 Correct 16 ms 7056 KB Output is correct
11 Correct 49 ms 16428 KB Output is correct
12 Correct 14 ms 8080 KB Output is correct
13 Correct 12 ms 9208 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 105 ms 26212 KB Output is correct
17 Runtime error 125 ms 47280 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 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 5000 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 107 ms 26264 KB Output is correct
10 Correct 16 ms 7056 KB Output is correct
11 Correct 49 ms 16428 KB Output is correct
12 Correct 14 ms 8080 KB Output is correct
13 Correct 12 ms 9208 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 3 ms 5076 KB Output is correct
16 Correct 105 ms 26212 KB Output is correct
17 Runtime error 6 ms 9864 KB Execution killed with signal 6
18 Halted 0 ms 0 KB -