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Submission #436774

# Submission time Handle Problem Language Result Execution time Memory
436774 2021-06-24T21:09:12 Z Apiram Fountain Parks (IOI21_parks) C++17
15 / 100
 242 ms 33772 KB 
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
struct point {
	int x,y,index;
};
bool dist(point x,point y){
	if (((x.x - y.x)*(x.x - y.x)+(x.y-y.y)*(x.y - y.y))!=4)return false;
	return true;
}
int binarysearch(int seg,int eq,int n,vector<point>arr){
	int left = 0;
	int right = n-1;
	while(left<=right){
		int mid = (left + right) >> 1;
		if (arr[mid].x<seg)left= mid + 1;
		else if (arr[mid].x>seg)right = mid-1;
		else {
			if (arr[mid].y<eq){
				left=mid+1;
			}
			else if (arr[mid].y>eq){
				right = mid-1;
			}
			else return mid;
		}
	}
	return -1;
}
void build(vector<int> u, vector<int> v, vector<int> a, vector<int> b) ;
int construct_roads(std::vector<int> x, std::vector<int> y) {
    vector<point>arr;
    int n = x.size();
    bool ok=true;
    for (int i = 0 ;i<n;++i){
    	if (x[i]!=x[0])ok=false;
    	arr.push_back({x[i],y[i],i});
    }
    vector<int>ansx,ansy,ansxi,ansyi;
    if (ok){
    sort(arr.begin(),arr.end(),[&](point a,point b){
    	return a.y<b.y;
    });
    
    for (int i = 1;i<n;++i){
    	if (dist(arr[i],arr[i-1])){
    		ansx.push_back(min(arr[i].x,arr[i-1].x) + 1);
    		ansy.push_back(min(arr[i].y,arr[i-1].y)+1);
    		ansxi.push_back(arr[i].index);
    		ansyi.push_back(arr[i-1].index);
    	}
    	else return 0;
    }
    build(ansxi,ansyi,ansx,ansy);
    return 1;}
    else{
    	vector<vector<int>>adj(n);
    	vector<vector<bool>>p(3,vector<bool>(1e5 + 5,false));
    	sort(arr.begin(),arr.end(),[&](point a,point b){
    		if (a.x==b.x)return a.y<b.y;
    		return a.x<b.x;
    });
    	int i =1;
    	for (;i<n;++i){
    		if (arr[i].x!=2)break;
    		if (dist(arr[i],arr[i-1])){
    		ansx.push_back(min(arr[i].x,arr[i-1].x) - 1);
    		ansy.push_back(min(arr[i].y,arr[i-1].y) + 1);
    		ansxi.push_back(arr[i].index);
    		ansyi.push_back(arr[i-1].index);
    		adj[i].push_back(i-1);
    		adj[i-1].push_back(i);
    		p[ansx.back()/2][ansy.back()/2]=true;
    		}
    		}
    		int j = i;
    
    	for (;i<n;++i){
    		if (arr[i-1].x==2)continue;
    		if (dist(arr[i],arr[i-1])){
    		ansx.push_back(min(arr[i].x,arr[i-1].x) + 1);
    		ansy.push_back(min(arr[i].y,arr[i-1].y) + 1);
    		ansxi.push_back(arr[i].index);
    		ansyi.push_back(arr[i-1].index);
    		adj[i].push_back(i-1);
    		adj[i-1].push_back(i);
    		p[ansx.back()/2][ansy.back()/2]=true;
    		}
    	}
	int left =j;
    	for (int  k =0;k<j;++k){
    		int right = n-1;
    		while(left<=right){
    			int mid = (left + right)>>1;
    			if (arr[mid].y==arr[k].y){
    			int first1 =  min(arr[k].x,arr[mid].x) + 1;
   				int second1 = 	min(arr[k].y,arr[mid].y) + 1;
   				int second2=min(arr[k].y,arr[mid].y) - 1;
   				if (!p[first1/2][second2/2]){
   					ansx.push_back(first1);
    				ansy.push_back(second2);
    				ansxi.push_back(arr[k].index);
    				ansyi.push_back(arr[mid].index);
    				adj[mid].push_back(k);
    				adj[k].push_back(mid);
    				p[ansx.back()/2][ansy.back()/2]=true;
   				}		
   				else if (!p[first1/2][second1/2]){
   					ansx.push_back(first1);
    				ansy.push_back(second1);
    				ansxi.push_back(arr[k].index);
    				ansyi.push_back(arr[mid].index);
    				adj[mid].push_back(k);
    				adj[k].push_back(mid);
    				p[ansx.back()/2][ansy.back()/2]=true;
    			}
    			break;
    			}
    			else if (arr[mid].y<arr[k].y){
    				left=mid+1;
    			}
    			else right = mid-1;
    		}
    	}
		vector<bool>visited(n,false);
		queue<int>q;
		
		q.push(0);
		while(!q.empty()){
			int u =q.front();
			q.pop();
			visited[u]=true;
			for (auto x:adj[u]){
				if (!visited[x]){
				q.push(x);
				visited[x]=true;}
			}
		}
		for (auto x:visited){
			if (!x)return 0;
		}
		build(ansxi,ansyi,ansx,ansy);
    return 1;
}}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 69 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 33 ms 4428 KB Output is correct
12 Correct 9 ms 1448 KB Output is correct
13 Correct 11 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 248 KB Output is correct
16 Correct 68 ms 8084 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 69 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 33 ms 4428 KB Output is correct
12 Correct 9 ms 1448 KB Output is correct
13 Correct 11 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 248 KB Output is correct
16 Correct 68 ms 8084 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 242 ms 33752 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 2 ms 540 KB Output is correct
26 Correct 3 ms 588 KB Output is correct
27 Correct 3 ms 716 KB Output is correct
28 Correct 93 ms 12560 KB Output is correct
29 Correct 135 ms 19920 KB Output is correct
30 Correct 185 ms 24888 KB Output is correct
31 Correct 241 ms 33772 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 2 ms 588 KB Output is correct
45 Correct 88 ms 13356 KB Output is correct
46 Correct 137 ms 20236 KB Output is correct
47 Correct 130 ms 20224 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 69 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 33 ms 4428 KB Output is correct
12 Correct 9 ms 1448 KB Output is correct
13 Correct 11 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 248 KB Output is correct
16 Correct 68 ms 8084 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 242 ms 33752 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 2 ms 540 KB Output is correct
26 Correct 3 ms 588 KB Output is correct
27 Correct 3 ms 716 KB Output is correct
28 Correct 93 ms 12560 KB Output is correct
29 Correct 135 ms 19920 KB Output is correct
30 Correct 185 ms 24888 KB Output is correct
31 Correct 241 ms 33772 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 2 ms 588 KB Output is correct
45 Correct 88 ms 13356 KB Output is correct
46 Correct 137 ms 20236 KB Output is correct
47 Correct 130 ms 20224 KB Output is correct
48 Runtime error 1 ms 460 KB Execution killed with signal 11
49 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 69 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 33 ms 4428 KB Output is correct
12 Correct 9 ms 1448 KB Output is correct
13 Correct 11 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 248 KB Output is correct
16 Correct 68 ms 8084 KB Output is correct
17 Runtime error 1 ms 460 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 69 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 33 ms 4428 KB Output is correct
12 Correct 9 ms 1448 KB Output is correct
13 Correct 11 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 248 KB Output is correct
16 Correct 68 ms 8084 KB Output is correct
17 Runtime error 97 ms 25948 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 69 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 33 ms 4428 KB Output is correct
12 Correct 9 ms 1448 KB Output is correct
13 Correct 11 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 248 KB Output is correct
16 Correct 68 ms 8084 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 242 ms 33752 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 2 ms 540 KB Output is correct
26 Correct 3 ms 588 KB Output is correct
27 Correct 3 ms 716 KB Output is correct
28 Correct 93 ms 12560 KB Output is correct
29 Correct 135 ms 19920 KB Output is correct
30 Correct 185 ms 24888 KB Output is correct
31 Correct 241 ms 33772 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 2 ms 588 KB Output is correct
45 Correct 88 ms 13356 KB Output is correct
46 Correct 137 ms 20236 KB Output is correct
47 Correct 130 ms 20224 KB Output is correct
48 Runtime error 1 ms 460 KB Execution killed with signal 11
49 Halted 0 ms 0 KB -