oj.uz

Submission #436718

# Submission time Handle Problem Language Result Execution time Memory
436718 2021-06-24T19:43:29 Z Apiram Fountain Parks (IOI21_parks) C++17
5 / 100
 92 ms 19124 KB 
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
void build(vector<int> u, vector<int> v, vector<int> a, vector<int> b);
struct point {
	int x,y,index;
};
bool dist(point x,point y){
	if (pow(x.x - y.x,2)+pow(x.y-y.y,2)!=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;
}
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<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;
    });
    set<int>check;
    	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);
    		p[ansx.back()/2][ansy.back()/2]=true;
    		}
    		else {
    			
    			int temp1 = binarysearch(arr[i].x+2,arr[i].y, n,arr);
    			if (temp1!=-1){
    				int first1 = min(arr[i].x,arr[temp1].x) + 1;
    				int second1 =min(arr[i].y,arr[temp1].y) + 1;
    				int second2 =min(arr[i].y,arr[temp1].y) - 1;
    				if (!p[first1/2][second1/2]){
    					ansx.push_back(first1);
    					ansy.push_back(second1);
    					ansxi.push_back(arr[i].index);
    					ansyi.push_back(arr[temp1].index);
    					p[ansx.back()/2][ansy.back()/2]=true;
    					check.insert(temp1);
    				}
    				else if (!p[first1/2][second2/2]){
    					ansx.push_back(first1);
    					ansy.push_back(second2);
    					ansxi.push_back(arr[i].index);
    					ansyi.push_back(arr[temp1].index);
    					p[ansx.back()/2][ansy.back()/2]=true;
    					check.insert(temp1);
    				}
    				else return 0;
    			}	
    			else return 0;
    		}
    	}
    		
    			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);
    		p[ansx.back()/2][ansy.back()/2]=true;
    		}
    		
    		else {
    		int temp1 = binarysearch(arr[i].x-2,arr[i].y,n,arr);
    			if (temp1!=-1){
    				int first1 = min(arr[i].x,arr[temp1].x) + 1;
    				int second1 =min(arr[i].y,arr[temp1].y) + 1;
    				int second2 =min(arr[i].y,arr[temp1].y) - 1;
    				if (!p[first1/2][second1/2]){
    					ansx.push_back(first1);
    					ansy.push_back(second1);
    					ansxi.push_back(arr[i].index);
    					ansyi.push_back(arr[temp1].index);
    					p[ansx.back()/2][ansy.back()/2]=true;
    				}
    				else if (!p[first1/2][second2/2]){
    					ansx.push_back(first1);
    					ansy.push_back(second2);
    					ansxi.push_back(arr[i].index);
    					ansyi.push_back(arr[temp1].index);
    					p[ansx.back()/2][ansy.back()/2]=true;
    				}
    				else return 0;
    			}	
    			else return 0;
    		}
    	}
    	bool ok=false;
    for (i = j;i<n;++i){
    	if (dist(arr[j-1],arr[i])){
    		int first1=min(arr[i].x,arr[j-1].x) + 1;
    		int second1=min(arr[i].y,arr[j-1].y) + 1;
    		int second2 = min(arr[i].y,arr[j-1].y) - 1;
    		if (!p[first1/2][second1/2]){
    			ok=true;
    			ansx.push_back(first1);
    			ansy.push_back(second1);
    			ansxi.push_back(arr[j-1].index);
    			ansyi.push_back(arr[i].index);
    			break;
    		}
    		if (!p[first1/2][second2/2]){
    			ok=true;
    			ansx.push_back(first1);
    			ansy.push_back(second2);
    			ansxi.push_back(arr[j-1].index);
    			ansyi.push_back(arr[i].index);
    			break;
    		}
    		
    		
    		
    	}
    }
    if (!ok)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 70 ms 8060 KB Output is correct
10 Correct 7 ms 1176 KB Output is correct
11 Correct 33 ms 4424 KB Output is correct
12 Correct 12 ms 1504 KB Output is correct
13 Correct 12 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 79 ms 8060 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 70 ms 8060 KB Output is correct
10 Correct 7 ms 1176 KB Output is correct
11 Correct 33 ms 4424 KB Output is correct
12 Correct 12 ms 1504 KB Output is correct
13 Correct 12 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 79 ms 8060 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 284 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Incorrect 1 ms 332 KB Edge between 3 and 5 appears more than once: appeared on positions 1 and 4
22 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 70 ms 8060 KB Output is correct
10 Correct 7 ms 1176 KB Output is correct
11 Correct 33 ms 4424 KB Output is correct
12 Correct 12 ms 1504 KB Output is correct
13 Correct 12 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 79 ms 8060 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 284 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Incorrect 1 ms 332 KB Edge between 3 and 5 appears more than once: appeared on positions 1 and 4
22 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 70 ms 8060 KB Output is correct
10 Correct 7 ms 1176 KB Output is correct
11 Correct 33 ms 4424 KB Output is correct
12 Correct 12 ms 1504 KB Output is correct
13 Correct 12 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 79 ms 8060 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 70 ms 8060 KB Output is correct
10 Correct 7 ms 1176 KB Output is correct
11 Correct 33 ms 4424 KB Output is correct
12 Correct 12 ms 1504 KB Output is correct
13 Correct 12 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 79 ms 8060 KB Output is correct
17 Runtime error 92 ms 19124 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 70 ms 8060 KB Output is correct
10 Correct 7 ms 1176 KB Output is correct
11 Correct 33 ms 4424 KB Output is correct
12 Correct 12 ms 1504 KB Output is correct
13 Correct 12 ms 2248 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 79 ms 8060 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 284 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Incorrect 1 ms 332 KB Edge between 3 and 5 appears more than once: appeared on positions 1 and 4
22 Halted 0 ms 0 KB -