oj.uz

Submission #435682

# Submission time Handle Problem Language Result Execution time Memory
435682 2021-06-23T15:01:42 Z DanerZein Fountain Parks (IOI21_parks) C++17
15 / 100
 431 ms 48600 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> ii;
typedef vector<ii> vi;
const int MAX_N=2e5+10;
vector<vi> ox(MAX_N),oy(MAX_N);
int pa[MAX_N],tam[MAX_N];
void init(int n){
  for(int i=0;i<n;i++){
    pa[i]=i; tam[i]=1;
  }
}
int findset(int i){
  if(pa[i]==i) return i;
  return pa[i]=findset(pa[i]);
}
bool issameset(int i,int j){
  return findset(i)==findset(j);
}
void unionset(int i,int j){
  if(!issameset(i,j)){
    int u=findset(i),v=findset(j);
    pa[u]=v;
    tam[v]+=tam[u];
  }
}
int construct_roads(std::vector<int> x, std::vector<int> y) {
  int n=x.size();
  for(int i=0;i<n;i++){
    ox[x[i]].push_back(ii(y[i],i));
    oy[y[i]].push_back(ii(x[i],i));
  }
  for(int i=0;i<MAX_N;i++){
    sort(ox[i].begin(),ox[i].end());
    sort(oy[i].begin(),oy[i].end());
  }
  vector<int> ru,rv,ra,rb;
  set<ii> ba;
  init(n);
  for(int i=2;i<MAX_N;i+=2){
    int t=oy[i].size();
    for(int j=0;j<t-1;j++){
      int xi=oy[i][j].first,xj=oy[i][j+1].first;
      int u=oy[i][j].second,v=oy[i][j+1].second;
      if(xj-xi==2){
	ru.push_back(oy[i][j].second);
	rv.push_back(oy[i][j+1].second);
	unionset(u,v);
	int xk=oy[i][j+2].first;
	auto it=lower_bound(oy[i-2].begin(),oy[i-2].end(),ii(xj,0));
	if(xk-xj==2 && (*it).first==xj){
	  ra.push_back(xi+1); rb.push_back(i+1);
	  ba.insert(ii(xi+1,i+1));
	}
	else{
	  ra.push_back(xi+1); rb.push_back(i-1);
	  ba.insert(ii(xi+1,i-1));
	}
      }
    }
  }
  for(int i=2;i<MAX_N;i+=2){
    int t=ox[i].size();
    for(int j=0;j<t-1;j++){
      int yi=ox[i][j].first,yj=ox[i][j+1].first;
      int u=ox[i][j].second,v=ox[i][j+1].second;
      if(yj-yi==2){
	ru.push_back(u); rv.push_back(v);
	unionset(u,v);
	if(ba.find(ii(i-1,yi+1))!=ba.end()){
	  ra.push_back(i+1); rb.push_back(yi+1);
	  ba.insert(ii(i+1,yi+1));
	}
	else{
	  ra.push_back(i-1); rb.push_back(yi+1);
	  ba.insert(ii(i-1,yi+1));
	}
      }
    }
  }
  if(tam[findset(0)]!=n) return 0;
  build(ru,rv,ra,rb);
  return 1;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9676 KB Output is correct
2 Correct 9 ms 9676 KB Output is correct
3 Correct 10 ms 9708 KB Output is correct
4 Correct 10 ms 9676 KB Output is correct
5 Correct 9 ms 9708 KB Output is correct
6 Correct 9 ms 9676 KB Output is correct
7 Correct 9 ms 9676 KB Output is correct
8 Correct 11 ms 9676 KB Output is correct
9 Correct 143 ms 27944 KB Output is correct
10 Correct 18 ms 11600 KB Output is correct
11 Correct 67 ms 19540 KB Output is correct
12 Correct 25 ms 12504 KB Output is correct
13 Correct 48 ms 15652 KB Output is correct
14 Correct 10 ms 9804 KB Output is correct
15 Correct 11 ms 9848 KB Output is correct
16 Correct 139 ms 27432 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9676 KB Output is correct
2 Correct 9 ms 9676 KB Output is correct
3 Correct 10 ms 9708 KB Output is correct
4 Correct 10 ms 9676 KB Output is correct
5 Correct 9 ms 9708 KB Output is correct
6 Correct 9 ms 9676 KB Output is correct
7 Correct 9 ms 9676 KB Output is correct
8 Correct 11 ms 9676 KB Output is correct
9 Correct 143 ms 27944 KB Output is correct
10 Correct 18 ms 11600 KB Output is correct
11 Correct 67 ms 19540 KB Output is correct
12 Correct 25 ms 12504 KB Output is correct
13 Correct 48 ms 15652 KB Output is correct
14 Correct 10 ms 9804 KB Output is correct
15 Correct 11 ms 9848 KB Output is correct
16 Correct 139 ms 27432 KB Output is correct
17 Correct 9 ms 9660 KB Output is correct
18 Correct 10 ms 9704 KB Output is correct
19 Correct 9 ms 9708 KB Output is correct
20 Correct 10 ms 9700 KB Output is correct
21 Correct 9 ms 9644 KB Output is correct
22 Correct 10 ms 9712 KB Output is correct
23 Correct 361 ms 48600 KB Output is correct
24 Correct 10 ms 9676 KB Output is correct
25 Correct 13 ms 9944 KB Output is correct
26 Correct 14 ms 10164 KB Output is correct
27 Correct 13 ms 10188 KB Output is correct
28 Correct 128 ms 25288 KB Output is correct
29 Correct 217 ms 33016 KB Output is correct
30 Correct 273 ms 40896 KB Output is correct
31 Correct 364 ms 48568 KB Output is correct
32 Correct 10 ms 9676 KB Output is correct
33 Correct 9 ms 9676 KB Output is correct
34 Correct 10 ms 9676 KB Output is correct
35 Correct 9 ms 9676 KB Output is correct
36 Correct 9 ms 9676 KB Output is correct
37 Correct 9 ms 9628 KB Output is correct
38 Correct 9 ms 9676 KB Output is correct
39 Correct 10 ms 9676 KB Output is correct
40 Correct 11 ms 9676 KB Output is correct
41 Correct 10 ms 9676 KB Output is correct
42 Correct 10 ms 9700 KB Output is correct
43 Correct 11 ms 9932 KB Output is correct
44 Correct 12 ms 10060 KB Output is correct
45 Correct 144 ms 24600 KB Output is correct
46 Correct 205 ms 31916 KB Output is correct
47 Correct 215 ms 31916 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9676 KB Output is correct
2 Correct 9 ms 9676 KB Output is correct
3 Correct 10 ms 9708 KB Output is correct
4 Correct 10 ms 9676 KB Output is correct
5 Correct 9 ms 9708 KB Output is correct
6 Correct 9 ms 9676 KB Output is correct
7 Correct 9 ms 9676 KB Output is correct
8 Correct 11 ms 9676 KB Output is correct
9 Correct 143 ms 27944 KB Output is correct
10 Correct 18 ms 11600 KB Output is correct
11 Correct 67 ms 19540 KB Output is correct
12 Correct 25 ms 12504 KB Output is correct
13 Correct 48 ms 15652 KB Output is correct
14 Correct 10 ms 9804 KB Output is correct
15 Correct 11 ms 9848 KB Output is correct
16 Correct 139 ms 27432 KB Output is correct
17 Correct 9 ms 9660 KB Output is correct
18 Correct 10 ms 9704 KB Output is correct
19 Correct 9 ms 9708 KB Output is correct
20 Correct 10 ms 9700 KB Output is correct
21 Correct 9 ms 9644 KB Output is correct
22 Correct 10 ms 9712 KB Output is correct
23 Correct 361 ms 48600 KB Output is correct
24 Correct 10 ms 9676 KB Output is correct
25 Correct 13 ms 9944 KB Output is correct
26 Correct 14 ms 10164 KB Output is correct
27 Correct 13 ms 10188 KB Output is correct
28 Correct 128 ms 25288 KB Output is correct
29 Correct 217 ms 33016 KB Output is correct
30 Correct 273 ms 40896 KB Output is correct
31 Correct 364 ms 48568 KB Output is correct
32 Correct 10 ms 9676 KB Output is correct
33 Correct 9 ms 9676 KB Output is correct
34 Correct 10 ms 9676 KB Output is correct
35 Correct 9 ms 9676 KB Output is correct
36 Correct 9 ms 9676 KB Output is correct
37 Correct 9 ms 9628 KB Output is correct
38 Correct 9 ms 9676 KB Output is correct
39 Correct 10 ms 9676 KB Output is correct
40 Correct 11 ms 9676 KB Output is correct
41 Correct 10 ms 9676 KB Output is correct
42 Correct 10 ms 9700 KB Output is correct
43 Correct 11 ms 9932 KB Output is correct
44 Correct 12 ms 10060 KB Output is correct
45 Correct 144 ms 24600 KB Output is correct
46 Correct 205 ms 31916 KB Output is correct
47 Correct 215 ms 31916 KB Output is correct
48 Correct 10 ms 9676 KB Output is correct
49 Correct 10 ms 9676 KB Output is correct
50 Runtime error 19 ms 19404 KB Execution killed with signal 11
51 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9676 KB Output is correct
2 Correct 9 ms 9676 KB Output is correct
3 Correct 10 ms 9708 KB Output is correct
4 Correct 10 ms 9676 KB Output is correct
5 Correct 9 ms 9708 KB Output is correct
6 Correct 9 ms 9676 KB Output is correct
7 Correct 9 ms 9676 KB Output is correct
8 Correct 11 ms 9676 KB Output is correct
9 Correct 143 ms 27944 KB Output is correct
10 Correct 18 ms 11600 KB Output is correct
11 Correct 67 ms 19540 KB Output is correct
12 Correct 25 ms 12504 KB Output is correct
13 Correct 48 ms 15652 KB Output is correct
14 Correct 10 ms 9804 KB Output is correct
15 Correct 11 ms 9848 KB Output is correct
16 Correct 139 ms 27432 KB Output is correct
17 Correct 11 ms 9676 KB Output is correct
18 Correct 10 ms 9676 KB Output is correct
19 Correct 10 ms 9656 KB Output is correct
20 Correct 431 ms 39380 KB Output is correct
21 Runtime error 147 ms 39800 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9676 KB Output is correct
2 Correct 9 ms 9676 KB Output is correct
3 Correct 10 ms 9708 KB Output is correct
4 Correct 10 ms 9676 KB Output is correct
5 Correct 9 ms 9708 KB Output is correct
6 Correct 9 ms 9676 KB Output is correct
7 Correct 9 ms 9676 KB Output is correct
8 Correct 11 ms 9676 KB Output is correct
9 Correct 143 ms 27944 KB Output is correct
10 Correct 18 ms 11600 KB Output is correct
11 Correct 67 ms 19540 KB Output is correct
12 Correct 25 ms 12504 KB Output is correct
13 Correct 48 ms 15652 KB Output is correct
14 Correct 10 ms 9804 KB Output is correct
15 Correct 11 ms 9848 KB Output is correct
16 Correct 139 ms 27432 KB Output is correct
17 Runtime error 140 ms 38496 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 9 ms 9676 KB Output is correct
2 Correct 9 ms 9676 KB Output is correct
3 Correct 10 ms 9708 KB Output is correct
4 Correct 10 ms 9676 KB Output is correct
5 Correct 9 ms 9708 KB Output is correct
6 Correct 9 ms 9676 KB Output is correct
7 Correct 9 ms 9676 KB Output is correct
8 Correct 11 ms 9676 KB Output is correct
9 Correct 143 ms 27944 KB Output is correct
10 Correct 18 ms 11600 KB Output is correct
11 Correct 67 ms 19540 KB Output is correct
12 Correct 25 ms 12504 KB Output is correct
13 Correct 48 ms 15652 KB Output is correct
14 Correct 10 ms 9804 KB Output is correct
15 Correct 11 ms 9848 KB Output is correct
16 Correct 139 ms 27432 KB Output is correct
17 Correct 9 ms 9660 KB Output is correct
18 Correct 10 ms 9704 KB Output is correct
19 Correct 9 ms 9708 KB Output is correct
20 Correct 10 ms 9700 KB Output is correct
21 Correct 9 ms 9644 KB Output is correct
22 Correct 10 ms 9712 KB Output is correct
23 Correct 361 ms 48600 KB Output is correct
24 Correct 10 ms 9676 KB Output is correct
25 Correct 13 ms 9944 KB Output is correct
26 Correct 14 ms 10164 KB Output is correct
27 Correct 13 ms 10188 KB Output is correct
28 Correct 128 ms 25288 KB Output is correct
29 Correct 217 ms 33016 KB Output is correct
30 Correct 273 ms 40896 KB Output is correct
31 Correct 364 ms 48568 KB Output is correct
32 Correct 10 ms 9676 KB Output is correct
33 Correct 9 ms 9676 KB Output is correct
34 Correct 10 ms 9676 KB Output is correct
35 Correct 9 ms 9676 KB Output is correct
36 Correct 9 ms 9676 KB Output is correct
37 Correct 9 ms 9628 KB Output is correct
38 Correct 9 ms 9676 KB Output is correct
39 Correct 10 ms 9676 KB Output is correct
40 Correct 11 ms 9676 KB Output is correct
41 Correct 10 ms 9676 KB Output is correct
42 Correct 10 ms 9700 KB Output is correct
43 Correct 11 ms 9932 KB Output is correct
44 Correct 12 ms 10060 KB Output is correct
45 Correct 144 ms 24600 KB Output is correct
46 Correct 205 ms 31916 KB Output is correct
47 Correct 215 ms 31916 KB Output is correct
48 Correct 10 ms 9676 KB Output is correct
49 Correct 10 ms 9676 KB Output is correct
50 Runtime error 19 ms 19404 KB Execution killed with signal 11
51 Halted 0 ms 0 KB -