oj.uz

Submission #436773

# Submission time Handle Problem Language Result Execution time Memory
436773 2021-06-24T21:04:47 Z Apiram Fountain Parks (IOI21_parks) C++17
5 / 100
 115 ms 25976 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(2,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[u]=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 73 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 32 ms 4432 KB Output is correct
12 Correct 11 ms 1504 KB Output is correct
13 Correct 15 ms 2248 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 66 ms 8116 KB Output is correct

Subtask #2
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 73 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 32 ms 4432 KB Output is correct
12 Correct 11 ms 1504 KB Output is correct
13 Correct 15 ms 2248 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 66 ms 8116 KB Output is correct
17 Runtime error 1 ms 460 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

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 73 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 32 ms 4432 KB Output is correct
12 Correct 11 ms 1504 KB Output is correct
13 Correct 15 ms 2248 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 66 ms 8116 KB Output is correct
17 Runtime error 1 ms 460 KB Execution killed with signal 11
18 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 73 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 32 ms 4432 KB Output is correct
12 Correct 11 ms 1504 KB Output is correct
13 Correct 15 ms 2248 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 66 ms 8116 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 73 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 32 ms 4432 KB Output is correct
12 Correct 11 ms 1504 KB Output is correct
13 Correct 15 ms 2248 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 66 ms 8116 KB Output is correct
17 Runtime error 115 ms 25976 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 73 ms 8084 KB Output is correct
10 Correct 6 ms 1176 KB Output is correct
11 Correct 32 ms 4432 KB Output is correct
12 Correct 11 ms 1504 KB Output is correct
13 Correct 15 ms 2248 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 66 ms 8116 KB Output is correct
17 Runtime error 1 ms 460 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -