oj.uz

Submission #740233

# Submission time Handle Problem Language Result Execution time Memory
740233 2023-05-12T07:52:46 Z vjudge1 Fountain Parks (IOI21_parks) C++17
15 / 100
 738 ms 158648 KB 
#include "parks.h"
#include <bits/stdc++.h>
#define f first
#define s second 
#define ent '\n'
//#define int long long

#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")

//typedef long double ld;
typedef long long ll;
using namespace std;
 
struct node{double x,y;};
//double len(node a,node b)
//{return sqrt((a.x-b.x)*(a.x-b.y)+(a.y-b.y)*(a.x-b.y));}

struct seg{
	int l,r,id;
};

const string out[2]={"NO\n","YES\n"};
const ll dx[]={-1,-1,1,1};  
const ll dy[]={-1,1,-1,1};
const ll dxx[]={0,0,2,-2};
const ll dyy[]={2,-2,0,0};
const int md=998244353;
const int mod=1e9+7;
const int mx=8e5+12; 
const int tst=1e5;
const bool T=0;

pair<int,pair<int,int>> p[mx];
map<int,bool> used[mx];
map<int,int> pos[mx];
vector<int> g[mx];
int ma[mx];
int mi[mx];

void dfs(int x,int y){
	used[x][y]=1;
	ma[x]=max(ma[x],y);
	mi[x]=min(mi[x],y);
	for(int k=0;k<4;k++){
		int x1=x+dxx[k];
		int y1=y+dyy[k];
		if(!used[x1].count(y1) && pos[x1].count(y1))dfs(x1,y1);
	}
}

int construct_roads(std::vector<int> x, std::vector<int> y) {
	int n=x.size();
	if(n==1){
		build({},{},{},{});
		return 1;
	}
	for(int i=1;i<=n;i++){
		p[i]={x[i-1],{y[i-1],i}};
	}
	sort(p+1,p+n+1);
	int mx=0;
	reverse(x.begin(),x.end());
	reverse(y.begin(),y.end());
	x.push_back(0);
	y.push_back(0);
	reverse(x.begin(),x.end());
	reverse(y.begin(),y.end());
	for(int i=1;i<=n;i++){
		mx=max(mx,x[i]);
		pos[x[i]][y[i]]=i-1;
	}
	for(int i=0;i<=mx;i++)mi[i]=1e9;
	dfs(x[1],y[1]);
	for(int i=1;i<=n;i++){
		if(!used[x[i]][y[i]]){
			return 0;
		}
	}
	vector<int> u,v,a,b;
	if(mx==2){
		for(int i=mi[2];i<ma[2];i+=2){
			u.push_back(pos[2][i]);
			v.push_back(pos[2][i+2]);
			a.push_back(1);
			b.push_back(i+1);
		}
		build(u,v,a,b);
		return 1;
	}
	if(mx==4){
		if(!ma[2]){
			for(int i=mi[4];i<ma[4];i+=2){
				u.push_back(pos[4][i]);
				v.push_back(pos[4][i+2]);
				a.push_back(3);
				b.push_back(i+1);
			}
			build(u,v,a,b);
			return 1;
		}
		for(int i=1;i<=n;i++){
			if(pos[x[i]].count(y[i]+2)){
				u.push_back(i-1);
				v.push_back(pos[x[i]][y[i]+2]);
				if(x[i]==2)a.push_back(1);
				else a.push_back(5);
				b.push_back(y[i]+1);
			}
		}
		for(int i=1;i<=n;i++){
			if(x[i]!=2)continue;
			if(pos[4].count(y[i])){
				u.push_back(i-1);
				v.push_back(pos[4][y[i]]);
				a.push_back(3);
				b.push_back(y[i]-1);
			}
		}
		build(u,v,a,b);
		return 1;
	}
	bool ok=0;
	for(int i=1;i<=n;i++){
		if(pos[x[i]].count(y[i]+2)){
			u.push_back(i-1);
			v.push_back(pos[x[i]][y[i]+2]);
			b.push_back(y[i]+1);
			if(!used[x[i]+1][y[i]+1]){
				used[x[i]+1][y[i]+1]=1;
				a.push_back(x[i]+1);
			}
			else if(!used[x[i]-1][y[i]+1]){
				used[x[i]-1][y[i]+1];
				a.push_back(x[i]-1);
			}
			else{
				u.clear();
				v.clear();
				a.clear();
				b.clear();
				break;
			}
		}
		if(pos[x[i]+2].count(y[i])){
			u.push_back(i-1);
			v.push_back(pos[x[i]+2][y[i]]);
			a.push_back(x[i]+1);
			if(!used[x[i]+1][y[i]-1]){
				used[x[i]+1][y[i]-1]=1;
				b.push_back(y[i]-1);
			}
			else if(!used[x[i]+1][y[i]+1]){
				used[x[i]+1][y[i]+1]=1;
				b.push_back(y[i]+1);
			}
			else{
				u.clear();
				v.clear();
				a.clear();
				b.clear();
				break;
			}
		}
	}
	if(u.size()>0){
		build(u,v,a,b);
		return 1;
	}
	for(int i=1;i<=n;i++){
		if(pos[x[i]].count(y[i]+2)){
			u.push_back(i-1);
			v.push_back(pos[x[i]][y[i]+2]);
			b.push_back(y[i]+1);
			if(!used[x[i]-1][y[i]+1]){
				used[x[i]-1][y[i]+1]=1;
				a.push_back(x[i]-1);
			}
			else if(!used[x[i]+1][y[i]+1]){
				used[x[i]+1][y[i]+1];
				a.push_back(x[i]+1);
			}
			else{
				u.clear();
				v.clear();
				a.clear();
				b.clear();
				break;
			}
		}
		if(pos[x[i]+2].count(y[i])){
			u.push_back(i-1);
			v.push_back(pos[x[i]+2][y[i]]);
			a.push_back(x[i]+1);
			if(!used[x[i]+1][y[i]+1]){
				used[x[i]+1][y[i]+1]=1;
				b.push_back(y[i]+1);
			}
			else if(!used[x[i]+1][y[i]-1]){
				used[x[i]+1][y[i]-1]=1;
				b.push_back(y[i]-1);
			}
			else{
				u.clear();
				v.clear();
				a.clear();
				b.clear();
				break;
			}
		}
	}
	if(u.size()>0){
		build(u,v,a,b);
		return 1;
	}
	for(int i=1;i<=n;i++){
		if(pos[x[i]].count(y[i]+2)){
			u.push_back(i-1);
			v.push_back(pos[x[i]][y[i]+2]);
			b.push_back(y[i]+1);
			if(!used[x[i]+1][y[i]+1]){
				used[x[i]+1][y[i]+1]=1;
				a.push_back(x[i]+1);
			}
			else if(!used[x[i]-1][y[i]+1]){
				used[x[i]-1][y[i]+1];
				a.push_back(x[i]-1);
			}
			else{
				u.clear();
				v.clear();
				a.clear();
				b.clear();
				break;
			}
		}
		if(pos[x[i]+2].count(y[i])){
			u.push_back(i-1);
			v.push_back(pos[x[i]+2][y[i]]);
			a.push_back(x[i]+1);
			if(!used[x[i]+1][y[i]+1]){
				used[x[i]+1][y[i]+1]=1;
				b.push_back(y[i]+1);
			}
			else if(!used[x[i]+1][y[i]-1]){
				used[x[i]+1][y[i]-1]=1;
				b.push_back(y[i]-1);
			}
			else{
				u.clear();
				v.clear();
				a.clear();
				b.clear();
				break;
			}
		}
	}
	if(u.size()>0){
		build(u,v,a,b);
		return 1;
	}
	for(int i=1;i<=n;i++){
		if(pos[x[i]].count(y[i]+2)){
			u.push_back(i-1);
			v.push_back(pos[x[i]][y[i]+2]);
			b.push_back(y[i]+1);
			if(!used[x[i]-1][y[i]+1]){
				used[x[i]-1][y[i]+1]=1;
				a.push_back(x[i]-1);
			}
			else if(!used[x[i]+1][y[i]+1]){
				used[x[i]+1][y[i]+1];
				a.push_back(x[i]+1);
			}
			else{
				u.clear();
				v.clear();
				a.clear();
				b.clear();
				break;
			}
		}
		if(pos[x[i]+2].count(y[i])){
			u.push_back(i-1);
			v.push_back(pos[x[i]+2][y[i]]);
			a.push_back(x[i]+1);
			if(!used[x[i]+1][y[i]-1]){
				used[x[i]+1][y[i]-1]=1;
				b.push_back(y[i]-1);
			}
			else if(!used[x[i]+1][y[i]+1]){
				used[x[i]+1][y[i]+1]=1;
				b.push_back(y[i]+1);
			}
			else{
				u.clear();
				v.clear();
				a.clear();
				b.clear();
				break;
			}
		}
	}
	if(u.size()>0){
		build(u,v,a,b);
		return 1;
	}
	return 0;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:123:7: warning: unused variable 'ok' [-Wunused-variable]
  123 |  bool ok=0;
      |       ^~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 94244 KB Output is correct
2 Correct 43 ms 94172 KB Output is correct
3 Correct 50 ms 94164 KB Output is correct
4 Correct 44 ms 94204 KB Output is correct
5 Correct 51 ms 94244 KB Output is correct
6 Correct 50 ms 94184 KB Output is correct
7 Correct 50 ms 94156 KB Output is correct
8 Correct 42 ms 94180 KB Output is correct
9 Correct 221 ms 119980 KB Output is correct
10 Correct 56 ms 97100 KB Output is correct
11 Correct 119 ms 108424 KB Output is correct
12 Correct 74 ms 98432 KB Output is correct
13 Correct 75 ms 101788 KB Output is correct
14 Correct 46 ms 94332 KB Output is correct
15 Correct 47 ms 94384 KB Output is correct
16 Correct 223 ms 116192 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 94244 KB Output is correct
2 Correct 43 ms 94172 KB Output is correct
3 Correct 50 ms 94164 KB Output is correct
4 Correct 44 ms 94204 KB Output is correct
5 Correct 51 ms 94244 KB Output is correct
6 Correct 50 ms 94184 KB Output is correct
7 Correct 50 ms 94156 KB Output is correct
8 Correct 42 ms 94180 KB Output is correct
9 Correct 221 ms 119980 KB Output is correct
10 Correct 56 ms 97100 KB Output is correct
11 Correct 119 ms 108424 KB Output is correct
12 Correct 74 ms 98432 KB Output is correct
13 Correct 75 ms 101788 KB Output is correct
14 Correct 46 ms 94332 KB Output is correct
15 Correct 47 ms 94384 KB Output is correct
16 Correct 223 ms 116192 KB Output is correct
17 Correct 47 ms 94156 KB Output is correct
18 Correct 49 ms 94156 KB Output is correct
19 Correct 49 ms 94156 KB Output is correct
20 Correct 44 ms 94204 KB Output is correct
21 Correct 53 ms 94240 KB Output is correct
22 Correct 52 ms 94164 KB Output is correct
23 Correct 700 ms 151648 KB Output is correct
24 Correct 48 ms 94152 KB Output is correct
25 Correct 53 ms 94520 KB Output is correct
26 Correct 45 ms 94676 KB Output is correct
27 Correct 45 ms 94544 KB Output is correct
28 Correct 268 ms 117280 KB Output is correct
29 Correct 335 ms 128680 KB Output is correct
30 Correct 538 ms 140132 KB Output is correct
31 Correct 738 ms 151600 KB Output is correct
32 Correct 44 ms 94156 KB Output is correct
33 Correct 44 ms 94144 KB Output is correct
34 Correct 44 ms 94172 KB Output is correct
35 Correct 45 ms 94144 KB Output is correct
36 Correct 44 ms 94164 KB Output is correct
37 Correct 43 ms 94144 KB Output is correct
38 Correct 44 ms 94240 KB Output is correct
39 Correct 44 ms 94200 KB Output is correct
40 Correct 46 ms 94120 KB Output is correct
41 Correct 46 ms 94164 KB Output is correct
42 Correct 45 ms 94184 KB Output is correct
43 Correct 58 ms 94432 KB Output is correct
44 Correct 48 ms 94468 KB Output is correct
45 Correct 293 ms 117152 KB Output is correct
46 Correct 399 ms 128664 KB Output is correct
47 Correct 375 ms 128064 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 94244 KB Output is correct
2 Correct 43 ms 94172 KB Output is correct
3 Correct 50 ms 94164 KB Output is correct
4 Correct 44 ms 94204 KB Output is correct
5 Correct 51 ms 94244 KB Output is correct
6 Correct 50 ms 94184 KB Output is correct
7 Correct 50 ms 94156 KB Output is correct
8 Correct 42 ms 94180 KB Output is correct
9 Correct 221 ms 119980 KB Output is correct
10 Correct 56 ms 97100 KB Output is correct
11 Correct 119 ms 108424 KB Output is correct
12 Correct 74 ms 98432 KB Output is correct
13 Correct 75 ms 101788 KB Output is correct
14 Correct 46 ms 94332 KB Output is correct
15 Correct 47 ms 94384 KB Output is correct
16 Correct 223 ms 116192 KB Output is correct
17 Correct 47 ms 94156 KB Output is correct
18 Correct 49 ms 94156 KB Output is correct
19 Correct 49 ms 94156 KB Output is correct
20 Correct 44 ms 94204 KB Output is correct
21 Correct 53 ms 94240 KB Output is correct
22 Correct 52 ms 94164 KB Output is correct
23 Correct 700 ms 151648 KB Output is correct
24 Correct 48 ms 94152 KB Output is correct
25 Correct 53 ms 94520 KB Output is correct
26 Correct 45 ms 94676 KB Output is correct
27 Correct 45 ms 94544 KB Output is correct
28 Correct 268 ms 117280 KB Output is correct
29 Correct 335 ms 128680 KB Output is correct
30 Correct 538 ms 140132 KB Output is correct
31 Correct 738 ms 151600 KB Output is correct
32 Correct 44 ms 94156 KB Output is correct
33 Correct 44 ms 94144 KB Output is correct
34 Correct 44 ms 94172 KB Output is correct
35 Correct 45 ms 94144 KB Output is correct
36 Correct 44 ms 94164 KB Output is correct
37 Correct 43 ms 94144 KB Output is correct
38 Correct 44 ms 94240 KB Output is correct
39 Correct 44 ms 94200 KB Output is correct
40 Correct 46 ms 94120 KB Output is correct
41 Correct 46 ms 94164 KB Output is correct
42 Correct 45 ms 94184 KB Output is correct
43 Correct 58 ms 94432 KB Output is correct
44 Correct 48 ms 94468 KB Output is correct
45 Correct 293 ms 117152 KB Output is correct
46 Correct 399 ms 128664 KB Output is correct
47 Correct 375 ms 128064 KB Output is correct
48 Correct 52 ms 94236 KB Output is correct
49 Correct 47 ms 94156 KB Output is correct
50 Correct 44 ms 94160 KB Output is correct
51 Incorrect 46 ms 94140 KB Solution announced impossible, but it is possible.
52 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 94244 KB Output is correct
2 Correct 43 ms 94172 KB Output is correct
3 Correct 50 ms 94164 KB Output is correct
4 Correct 44 ms 94204 KB Output is correct
5 Correct 51 ms 94244 KB Output is correct
6 Correct 50 ms 94184 KB Output is correct
7 Correct 50 ms 94156 KB Output is correct
8 Correct 42 ms 94180 KB Output is correct
9 Correct 221 ms 119980 KB Output is correct
10 Correct 56 ms 97100 KB Output is correct
11 Correct 119 ms 108424 KB Output is correct
12 Correct 74 ms 98432 KB Output is correct
13 Correct 75 ms 101788 KB Output is correct
14 Correct 46 ms 94332 KB Output is correct
15 Correct 47 ms 94384 KB Output is correct
16 Correct 223 ms 116192 KB Output is correct
17 Correct 50 ms 94900 KB Output is correct
18 Correct 44 ms 94928 KB Output is correct
19 Correct 44 ms 94904 KB Output is correct
20 Correct 355 ms 158648 KB Output is correct
21 Incorrect 277 ms 134688 KB Solution announced impossible, but it is possible.
22 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 94244 KB Output is correct
2 Correct 43 ms 94172 KB Output is correct
3 Correct 50 ms 94164 KB Output is correct
4 Correct 44 ms 94204 KB Output is correct
5 Correct 51 ms 94244 KB Output is correct
6 Correct 50 ms 94184 KB Output is correct
7 Correct 50 ms 94156 KB Output is correct
8 Correct 42 ms 94180 KB Output is correct
9 Correct 221 ms 119980 KB Output is correct
10 Correct 56 ms 97100 KB Output is correct
11 Correct 119 ms 108424 KB Output is correct
12 Correct 74 ms 98432 KB Output is correct
13 Correct 75 ms 101788 KB Output is correct
14 Correct 46 ms 94332 KB Output is correct
15 Correct 47 ms 94384 KB Output is correct
16 Correct 223 ms 116192 KB Output is correct
17 Correct 565 ms 157872 KB Output is correct
18 Incorrect 445 ms 142708 KB Solution announced impossible, but it is possible.
19 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 94244 KB Output is correct
2 Correct 43 ms 94172 KB Output is correct
3 Correct 50 ms 94164 KB Output is correct
4 Correct 44 ms 94204 KB Output is correct
5 Correct 51 ms 94244 KB Output is correct
6 Correct 50 ms 94184 KB Output is correct
7 Correct 50 ms 94156 KB Output is correct
8 Correct 42 ms 94180 KB Output is correct
9 Correct 221 ms 119980 KB Output is correct
10 Correct 56 ms 97100 KB Output is correct
11 Correct 119 ms 108424 KB Output is correct
12 Correct 74 ms 98432 KB Output is correct
13 Correct 75 ms 101788 KB Output is correct
14 Correct 46 ms 94332 KB Output is correct
15 Correct 47 ms 94384 KB Output is correct
16 Correct 223 ms 116192 KB Output is correct
17 Correct 47 ms 94156 KB Output is correct
18 Correct 49 ms 94156 KB Output is correct
19 Correct 49 ms 94156 KB Output is correct
20 Correct 44 ms 94204 KB Output is correct
21 Correct 53 ms 94240 KB Output is correct
22 Correct 52 ms 94164 KB Output is correct
23 Correct 700 ms 151648 KB Output is correct
24 Correct 48 ms 94152 KB Output is correct
25 Correct 53 ms 94520 KB Output is correct
26 Correct 45 ms 94676 KB Output is correct
27 Correct 45 ms 94544 KB Output is correct
28 Correct 268 ms 117280 KB Output is correct
29 Correct 335 ms 128680 KB Output is correct
30 Correct 538 ms 140132 KB Output is correct
31 Correct 738 ms 151600 KB Output is correct
32 Correct 44 ms 94156 KB Output is correct
33 Correct 44 ms 94144 KB Output is correct
34 Correct 44 ms 94172 KB Output is correct
35 Correct 45 ms 94144 KB Output is correct
36 Correct 44 ms 94164 KB Output is correct
37 Correct 43 ms 94144 KB Output is correct
38 Correct 44 ms 94240 KB Output is correct
39 Correct 44 ms 94200 KB Output is correct
40 Correct 46 ms 94120 KB Output is correct
41 Correct 46 ms 94164 KB Output is correct
42 Correct 45 ms 94184 KB Output is correct
43 Correct 58 ms 94432 KB Output is correct
44 Correct 48 ms 94468 KB Output is correct
45 Correct 293 ms 117152 KB Output is correct
46 Correct 399 ms 128664 KB Output is correct
47 Correct 375 ms 128064 KB Output is correct
48 Correct 52 ms 94236 KB Output is correct
49 Correct 47 ms 94156 KB Output is correct
50 Correct 44 ms 94160 KB Output is correct
51 Incorrect 46 ms 94140 KB Solution announced impossible, but it is possible.
52 Halted 0 ms 0 KB -