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Submission #436750

# Submission time Handle Problem Language Result Execution time Memory
436750 2021-06-24T20:31:42 Z PiejanVDC Fountain Parks (IOI21_parks) C++17
15 / 100
 277 ms 31144 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;

int construct_roads(vector<int>x, vector<int> y) {
    vector<pair<int,int>>two,four,six;
    for(int i = 0 ; i < y.size() ; i++) {
        if(x[i] == 2) two.push_back({y[i],i});
        else if(x[i] == 4) four.push_back({y[i],i});
        else six.push_back({y[i],i});
    }
    vector<int>adj[x.size()];
    vector<int>u,v,a,b;
    sort(two.begin(),two.end());
    sort(four.begin(),four.end());
    for(int i = 0 ; i < (int)two.size()-1 ; i++) {
        if(two[i+1].first-two[i].first == 2) {
            u.push_back(two[i].second);
            v.push_back(two[i+1].second);
            a.push_back(1);
            b.push_back(two[i].first+1);
            adj[two[i].second].push_back(two[i+1].second);
            adj[two[i+1].second].push_back(two[i].second);
        }
    }
    for(int i = 0 ; i < (int)four.size()-1 ; i++) {
        if(four[i+1].first-four[i].first == 2) {
            u.push_back(four[i].second);
            v.push_back(four[i+1].second);
            a.push_back(5);
            b.push_back(four[i].first+1);
            adj[four[i].second].push_back(four[i+1].second);
            adj[four[i+1].second].push_back(four[i].second);
        }
    }
    for(int i = 0 ; i < (int)six.size()-1 ; i++) {
        if(six[i+1].first-six[i].first == 2) {
            u.push_back(six[i].second);
            v.push_back(six[i+1].second);
            a.push_back(5);
            b.push_back(six[i].first+1);
            adj[six[i].second].push_back(six[i+1].second);
            adj[six[i+1].second].push_back(six[i].second);
        }
    }
    if((int)two.size() > 0 && (int)four.size() > 0) {
        for(int i = 0 ; i < two.size() ; i++) {
            int left=0,right=four.size();
            while(left <= right) {
                int mid = (left+right)/2;
                if(four[mid].first == two[i].first) {
                    u.push_back(two[i].second);
                    v.push_back(four[mid].second);
                    a.push_back(3);
                    b.push_back(two[i].first+1);
                    adj[two[i].second].push_back(four[mid].second);
                    adj[four[mid].second].push_back(two[i].second);
                    break;
                }
                if(four[mid].first < two[i].first) {
                    left=mid+1;
                } else {
                    right=mid-1;
                }
            }
        }
    }
    if((int)four.size() > 0 && (int)six.size() > 0) {
        for(int i = 0 ; i < four.size() ; i++) {
            int left=0,right=six.size();
            while(left <= right) {
                int mid = (left+right)/2;
                if(six[mid].first == four[i].first) {
                    u.push_back(four[i].second);
                    v.push_back(six[mid].second);
                    a.push_back(3);
                    b.push_back(four[i].first+1);
                    adj[four[i].second].push_back(six[mid].second);
                    adj[six[mid].second].push_back(four[i].second);
                    break;
                }
                if(six[mid].first < four[i].first) {
                    left=mid+1;
                } else {
                    right=mid-1;
                }
            }
        }
    }
    stack<int>s;
    s.push(0);
    vector<bool>vis(x.size(),false);
    while(!s.empty()) {
        int node = s.top();
        s.pop();
        vis[node]=true;
        for(auto z : adj[node]) {
            if(!vis[z]) s.push(z);
        }
    }
    bool f=true;
    for(auto z : vis) {
        if(!z) {
            f=false; break;
        }
    }
    if(f) {
        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:7:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     for(int i = 0 ; i < y.size() ; i++) {
      |                     ~~^~~~~~~~~~
parks.cpp:47:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         for(int i = 0 ; i < two.size() ; i++) {
      |                         ~~^~~~~~~~~~~~
parks.cpp:69:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |         for(int i = 0 ; i < four.size() ; i++) {
      |                         ~~^~~~~~~~~~~~~

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 93 ms 13316 KB Output is correct
10 Correct 8 ms 1660 KB Output is correct
11 Correct 39 ms 7276 KB Output is correct
12 Correct 11 ms 2244 KB Output is correct
13 Correct 19 ms 4512 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 95 ms 13416 KB Output is correct

Subtask #2
10.0 / 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 93 ms 13316 KB Output is correct
10 Correct 8 ms 1660 KB Output is correct
11 Correct 39 ms 7276 KB Output is correct
12 Correct 11 ms 2244 KB Output is correct
13 Correct 19 ms 4512 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 95 ms 13416 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 277 ms 31048 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 2 ms 588 KB Output is correct
27 Correct 3 ms 716 KB Output is correct
28 Correct 92 ms 12348 KB Output is correct
29 Correct 142 ms 18600 KB Output is correct
30 Correct 209 ms 24440 KB Output is correct
31 Correct 276 ms 31144 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 5 ms 588 KB Output is correct
45 Correct 95 ms 12884 KB Output is correct
46 Correct 138 ms 19656 KB Output is correct
47 Correct 144 ms 19636 KB Output is correct

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 93 ms 13316 KB Output is correct
10 Correct 8 ms 1660 KB Output is correct
11 Correct 39 ms 7276 KB Output is correct
12 Correct 11 ms 2244 KB Output is correct
13 Correct 19 ms 4512 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 95 ms 13416 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 277 ms 31048 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 2 ms 588 KB Output is correct
27 Correct 3 ms 716 KB Output is correct
28 Correct 92 ms 12348 KB Output is correct
29 Correct 142 ms 18600 KB Output is correct
30 Correct 209 ms 24440 KB Output is correct
31 Correct 276 ms 31144 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 5 ms 588 KB Output is correct
45 Correct 95 ms 12884 KB Output is correct
46 Correct 138 ms 19656 KB Output is correct
47 Correct 144 ms 19636 KB Output is correct
48 Incorrect 1 ms 204 KB Tree (a[2], b[2]) = (3, 3) is not adjacent to edge between u[2]=1 @(4, 2) and v[2]=0 @(6, 2)
49 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 93 ms 13316 KB Output is correct
10 Correct 8 ms 1660 KB Output is correct
11 Correct 39 ms 7276 KB Output is correct
12 Correct 11 ms 2244 KB Output is correct
13 Correct 19 ms 4512 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 95 ms 13416 KB Output is correct
17 Incorrect 1 ms 204 KB Solution announced impossible, but it is possible.
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 93 ms 13316 KB Output is correct
10 Correct 8 ms 1660 KB Output is correct
11 Correct 39 ms 7276 KB Output is correct
12 Correct 11 ms 2244 KB Output is correct
13 Correct 19 ms 4512 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 95 ms 13416 KB Output is correct
17 Incorrect 64 ms 12080 KB Solution announced impossible, but it is possible.
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 93 ms 13316 KB Output is correct
10 Correct 8 ms 1660 KB Output is correct
11 Correct 39 ms 7276 KB Output is correct
12 Correct 11 ms 2244 KB Output is correct
13 Correct 19 ms 4512 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 95 ms 13416 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 277 ms 31048 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 2 ms 588 KB Output is correct
27 Correct 3 ms 716 KB Output is correct
28 Correct 92 ms 12348 KB Output is correct
29 Correct 142 ms 18600 KB Output is correct
30 Correct 209 ms 24440 KB Output is correct
31 Correct 276 ms 31144 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 5 ms 588 KB Output is correct
45 Correct 95 ms 12884 KB Output is correct
46 Correct 138 ms 19656 KB Output is correct
47 Correct 144 ms 19636 KB Output is correct
48 Incorrect 1 ms 204 KB Tree (a[2], b[2]) = (3, 3) is not adjacent to edge between u[2]=1 @(4, 2) and v[2]=0 @(6, 2)
49 Halted 0 ms 0 KB -