oj.uz

Submission #754270

# Submission time Handle Problem Language Result Execution time Memory
754270 2023-06-07T11:37:11 Z tolbi Fountain Parks (IOI21_parks) C++17
5 / 100
 1027 ms 53116 KB 
#pragma optimize("Bismillahirrahmanirrahim")
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█■█
//█─█─█▄─█▄─█─█─█─█
//Allahuekber
//ahmet23 orz...
//Sani buyuk Osman Pasa Plevneden cikmam diyor.
//FatihSultanMehmedHan
//YavuzSultanSelimHan
//AbdulhamidHan
#define author tolbi
#include <bits/stdc++.h>
using namespace std;
template<typename X, typename Y> istream& operator>>(istream& in, pair<X,Y> &pr) {return in>>pr.first>>pr.second;}
template<typename X, typename Y> ostream& operator<<(ostream& os, pair<X,Y> pr) {return os<<pr.first<<" "<<pr.second;}
template<typename X> istream& operator>>(istream& in, vector<X> &arr) {for(auto &it : arr) in>>it; return in;}
template<typename X> ostream& operator<<(ostream& os, vector<X> arr) {for(auto &it : arr) os<<it<<" "; return os;}
template<typename X, size_t Y> istream& operator>>(istream& in, array<X,Y> &arr) {for(auto &it : arr) in>>it; return in;}
template<typename X, size_t Y> ostream& operator<<(ostream& os, array<X,Y> arr) {for(auto &it : arr) os<<it<<" "; return os;}
template<typename T> vector<int32_t> normalize(vector<T> &arr){vector<int> rv;rv.resize(arr.size());for (int i = 0; i < rv.size(); ++i){rv[i]=arr[i];}return rv;}
#define endl '\n'
#define vint(x) vector<int> x
#define deci(x) int x;cin>>x;
#define decstr(x) string x;cin>>x;
#define cinarr(x) for (auto &it : x) cin>>it;
#define coutarr(x) for (auto &it : x) cout<<it<<" ";cout<<endl;
#define sortarr(x) sort(x.begin(),x.end())
#define sortrarr(x) sort(x.rbegin(),x.rend())
#define det(x) cout<<"NO\0YES"+x*3<<endl;
#define INF LONG_MAX
#define rev(x) reverse(x.begin(),x.end());
#define ios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define tol(bi) (1LL<<((int)(bi)))
const int MOD = 1e9+7;
mt19937 ayahya(chrono::high_resolution_clock().now().time_since_epoch().count());
#include "parks.h"
struct DSU{
	vector<int> par;
	DSU(int n){
		par.resize(n);
		iota(par.begin(), par.end(), 0ll);
	}
	int find(int node){
		if (par[node]==node) return node;
		return par[node]=find(par[node]);
	}
	void merge(int a, int b){
		a=find(a);
		b=find(b);
		if (ayahya()%2) swap(a,b);
		par[a]=b;
	}
};
int construct_roads(vector<int> x, vector<int> y) {
	map<pair<int,int>,int> mp;
	int n = x.size();
	for (int i = 0; i < n; ++i)
	{
		mp[{x[i],y[i]}]=i;
	}
	map<pair<int,int>,int> dikey;
	map<pair<int,int>,int> yatay;
	vector<bool> yat;
	vector<int> u;
	vector<int> v;
	vector<int> a;
	vector<int> b;
	DSU dsu(n);
	for (int i = 0; i < n; i++){
		int xv = x[i];
		int yv = y[i];
		if (mp.count({xv+2,yv})){
			if (dsu.find(i)!=dsu.find(mp[{xv+2,yv}])){
				dsu.merge(i,mp[{xv+2,yv}]);
				yatay[{xv,yv}]=u.size();
				u.push_back(i);
				v.push_back(mp[{xv+2,yv}]);
				yat.push_back(true);
				a.push_back(-23);
				b.push_back(-23);
			}
		}
		if (mp.count({xv,yv+2})){
			if (dsu.find(i)!=dsu.find(mp[{xv,yv+2}])){
				dsu.merge(i,mp[{xv,yv+2}]);
				dikey[{xv,yv}]=u.size();
				u.push_back(i);
				v.push_back(mp[{xv,yv+2}]);
				yat.push_back(false);
				a.push_back(-23);
				b.push_back(-23);
			}
		}
	}
	if (u.size()!=n-1) return 0;
	map<pair<int,int>,bool> kap;
	int mini = *min_element(x.begin(), x.end());
	int minj = *min_element(y.begin(), y.end());
	int mani = *max_element(x.begin(), x.end());
	int manj = *max_element(y.begin(), y.end());
	vector<int> sir;
	vector<int> viss(u.size(),false);
	for (int i = 0; i < u.size(); i++){
		if (x[u[i]]==mini && !yat[i]){
			a[i]=x[u[i]]-1;
			b[i]=y[u[i]]+1;
			viss[i]=true;
			continue;
		}
		if (x[u[i]]==mani && !yat[i]){
			a[i]=x[u[i]]+1;
			b[i]=y[u[i]]+1;
			viss[i]=true;
			continue;
		}
		if (y[u[i]]==minj & yat[i]){
			a[i]=x[u[i]]+1;
			b[i]=y[u[i]]-1;
			viss[i]=true;
			continue;
		}
		if (y[u[i]]==manj && yat[i]){
			a[i]=x[u[i]]+1;
			b[i]=y[u[i]]+1;
			viss[i]=true;
			continue;
		}
	}
	for (int i = 0; i < u.size(); ++i)
	{
		if (viss[i]) continue;
		int xv = x[u[i]];
		int yv = y[u[i]];
		if (yatay.count({xv,yv}) && dikey.count({xv,yv}) && yatay.count({xv-2,yv}) && dikey.count({xv,yv-2})){
			sir.push_back(i);
			viss[i]=true;
		}
	}
	for (int i = 0; i < u.size(); ++i){
		if (!yat[i]) continue;
		if (viss[i]) continue;
		sir.push_back(i);
		viss[i]=true;
	}
	for (int i = 0; i < u.size(); ++i)
	{
		if (viss[i]) continue;
		sir.push_back(i);
	}
	for (int i = 0; i < sir.size(); i++){
		int ed = sir[i];
		queue<int> q;
		q.push(i);
		while (q.size()){
			int ed = q.front();
			q.pop();
			if (a[ed]!=-23) break;
			if (yat[ed]){
				if (!kap[{x[u[ed]]+1,y[u[ed]]+1}]){
					kap[{x[u[ed]]+1,y[u[ed]]+1}]=true;
					a[ed]=x[u[ed]]+1;
					b[ed]=y[u[ed]]+1;
				}
				else {
					if (kap[{x[u[ed]]+1,y[u[ed]]-1}]) return 0;
					kap[{x[u[ed]]+1,y[u[ed]]-1}]=true;
					a[ed]=x[u[ed]]+1;
					b[ed]=y[u[ed]]-1;
				}
			}
			else {
				if (!kap[{x[u[ed]]+1,y[u[ed]]+1}]){
					kap[{x[u[ed]]+1,y[u[ed]]+1}]=true;
					a[ed]=x[u[ed]]+1;
					b[ed]=y[u[ed]]+1;
				}
				else {
					if (kap[{x[u[ed]]-1,y[u[ed]]+1}]) return 0;
					kap[{x[u[ed]]-1,y[u[ed]]+1}]=true;
					a[ed]=x[u[ed]]-1;
					b[ed]=y[u[ed]]+1;
				}
			}
			pair<int,int> pr;
			pr={a[ed]-1,b[ed]-1};
			if (yatay.count(pr) && yatay[pr]!=ed && a[yatay[pr]]==-23){
				q.push(yatay[pr]);
			}
			pr={a[ed]-1,b[ed]+1};
			if (yatay.count(pr) && yatay[pr]!=ed && a[yatay[pr]]==-23){
				q.push(yatay[pr]);
			}			
			pr={a[ed]-1,b[ed]-1};
			if (dikey.count(pr) && dikey[pr]!=ed && a[dikey[pr]]==-23){
				q.push(dikey[pr]);
			}			
			pr={a[ed]+1,b[ed]-1};
			if (dikey.count(pr) && dikey[pr]!=ed && a[dikey[pr]]==-23){
				q.push(dikey[pr]);
			}
		}
	}
	build(u,v,a,b);
	return 1;
}

Compilation message

parks.cpp:1: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    1 | #pragma optimize("Bismillahirrahmanirrahim")
      | 
parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:95:14: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   95 |  if (u.size()!=n-1) return 0;
      |      ~~~~~~~~^~~~~
parks.cpp:103:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |  for (int i = 0; i < u.size(); i++){
      |                  ~~^~~~~~~~~~
parks.cpp:116:14: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
  116 |   if (y[u[i]]==minj & yat[i]){
parks.cpp:129:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |  for (int i = 0; i < u.size(); ++i)
      |                  ~~^~~~~~~~~~
parks.cpp:139:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  139 |  for (int i = 0; i < u.size(); ++i){
      |                  ~~^~~~~~~~~~
parks.cpp:145:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  145 |  for (int i = 0; i < u.size(); ++i)
      |                  ~~^~~~~~~~~~
parks.cpp:150:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  150 |  for (int i = 0; i < sir.size(); i++){
      |                  ~~^~~~~~~~~~~~
parks.cpp:151:7: warning: unused variable 'ed' [-Wunused-variable]
  151 |   int ed = sir[i];
      |       ^~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 306 ms 19784 KB Output is correct
10 Correct 13 ms 2428 KB Output is correct
11 Correct 75 ms 10800 KB Output is correct
12 Correct 20 ms 3412 KB Output is correct
13 Correct 55 ms 7348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 256 ms 19896 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 306 ms 19784 KB Output is correct
10 Correct 13 ms 2428 KB Output is correct
11 Correct 75 ms 10800 KB Output is correct
12 Correct 20 ms 3412 KB Output is correct
13 Correct 55 ms 7348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 256 ms 19896 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Incorrect 1 ms 212 KB Tree (a[3], b[3]) = (-23, -23) is not adjacent to edge between u[3]=3 @(2, 4) and v[3]=6 @(4, 4)
21 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 306 ms 19784 KB Output is correct
10 Correct 13 ms 2428 KB Output is correct
11 Correct 75 ms 10800 KB Output is correct
12 Correct 20 ms 3412 KB Output is correct
13 Correct 55 ms 7348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 256 ms 19896 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Incorrect 1 ms 212 KB Tree (a[3], b[3]) = (-23, -23) is not adjacent to edge between u[3]=3 @(2, 4) and v[3]=6 @(4, 4)
21 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 306 ms 19784 KB Output is correct
10 Correct 13 ms 2428 KB Output is correct
11 Correct 75 ms 10800 KB Output is correct
12 Correct 20 ms 3412 KB Output is correct
13 Correct 55 ms 7348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 256 ms 19896 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 913 ms 52732 KB Output is correct
21 Correct 1027 ms 53084 KB Output is correct
22 Correct 994 ms 53116 KB Output is correct
23 Incorrect 620 ms 34644 KB Tree (a[40000], b[40000]) = (-23, -23) is not adjacent to edge between u[40000]=40002 @(60000, 19166) and v[40000]=78327 @(60000, 19168)
24 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 306 ms 19784 KB Output is correct
10 Correct 13 ms 2428 KB Output is correct
11 Correct 75 ms 10800 KB Output is correct
12 Correct 20 ms 3412 KB Output is correct
13 Correct 55 ms 7348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 256 ms 19896 KB Output is correct
17 Correct 625 ms 39460 KB Output is correct
18 Incorrect 849 ms 43000 KB Tree (a[100001], b[100001]) = (-23, -23) is not adjacent to edge between u[100001]=100001 @(50002, 92930) and v[100001]=198938 @(50002, 92932)
19 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 306 ms 19784 KB Output is correct
10 Correct 13 ms 2428 KB Output is correct
11 Correct 75 ms 10800 KB Output is correct
12 Correct 20 ms 3412 KB Output is correct
13 Correct 55 ms 7348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 256 ms 19896 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Incorrect 1 ms 212 KB Tree (a[3], b[3]) = (-23, -23) is not adjacent to edge between u[3]=3 @(2, 4) and v[3]=6 @(4, 4)
21 Halted 0 ms 0 KB -