oj.uz

Submission #1050874

# Submission time Handle Problem Language Result Execution time Memory
1050874 2024-08-09T15:58:58 Z amine_aroua Fountain Parks (IOI21_parks) C++17
30 / 100
 2107 ms 63064 KB 
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
vector<vector<int>> adj;
vector<bool> vis;
void dfs(int i)
{
    if(vis[i])
        return;
    vis[i] = 1;
    for(auto j : adj[i])
    {
        dfs(j);
    }
}
void add_edge(int u , int v)
{
    adj[u].push_back(v);
    adj[v].push_back(u);
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int construct_roads(std::vector<int> x, std::vector<int> y) {
    int n= (int)x.size();
    adj.assign(n , {});
    vis.assign(n , 0);
    vector<int> u , v , a , b;
    map<pair<int, int> , int> idx;
    set<pair<int ,int>> taken;
    for(int i = 0 ; i <n ; i++)
    {
        idx[{x[i] , y[i]}] = i;
    }
    vector<pair<int ,int>> vv;
    for(int i = 0 ; i < n ; i++)
        vv.push_back({x[i] , y[i]});
    sort(vv.begin() , vv.end());
    int cnt = 20;
    while(cnt--)
    {
        u.clear();
        v.clear();
        a.clear();
        b.clear();
        taken.clear();
        adj.assign(n , {});
        vis.assign(n ,0);
 
        for(int i = 0 ; i < n ;i++)
        {
            x[i] = vv[i].first , y[i] = vv[i].second;
        }
        bool acc = 1;
        for(int i = 0 ; i < n ;i++)
        {
            if(idx.count({x[i] + 2 , y[i]}))
            {
                if(!taken.count({x[i] + 1 , y[i] - 1}))
                {
                    u.push_back(idx[{x[i] , y[i]}]);
                    v.push_back(idx[{x[i] + 2 , y[i]}]);
                    a.push_back(x[i] + 1);
                    b.push_back(y[i] - 1);
                    taken.insert({x[i] + 1 , y[i] - 1});
                }
                else if(!taken.count({x[i] + 1 , y[i] + 1}))
                {
                    u.push_back(idx[{x[i] , y[i]}]);
                    v.push_back(idx[{x[i] + 2 , y[i]}]);
                    a.push_back(x[i] + 1);
                    b.push_back(y[i] + 1);
                    taken.insert({x[i] + 1 , y[i] + 1});
                }
            }
            if(idx.count({x[i] , y[i] + 2}))
            {
                
                if(!taken.count({x[i] - 1 , y[i] + 1}))
                {
                    u.push_back(idx[{x[i] , y[i]}]);
                    v.push_back(idx[{x[i] , y[i] + 2}]);
                    b.push_back(y[i] + 1);
                    a.push_back(x[i] - 1);
                    taken.insert({x[i] - 1 , y[i] +1});
                }
                else if(!taken.count({x[i] + 1 , y[i] + 1}))
                {
                    u.push_back(idx[{x[i] , y[i]}]);
                    v.push_back(idx[{x[i] , y[i] + 2}]);
                    b.push_back(y[i] + 1);
                    a.push_back(x[i] + 1);
                    taken.insert({x[i] + 1 , y[i] +1});
                }
            }
        }
        for(int i = 0 ; i < (int)u.size() ; i++)
        {
            add_edge(u[i] , v[i]);
        }
        dfs(0);
        for(int i = 0 ; i < n ; i++)
        {
            if(!vis[i])
            {
                acc = 0;
                break;
            }
        }
        if(!acc)
        {
            shuffle(v.begin() , v.end() , rng);
            continue;
            
        }
        build(u , v , a , b);
        return 1;
    }
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 106 ms 27260 KB Output is correct
10 Correct 7 ms 3160 KB Output is correct
11 Correct 60 ms 14972 KB Output is correct
12 Correct 11 ms 4700 KB Output is correct
13 Correct 347 ms 10456 KB Output is correct
14 Correct 5 ms 600 KB Output is correct
15 Correct 10 ms 860 KB Output is correct
16 Correct 121 ms 26024 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 106 ms 27260 KB Output is correct
10 Correct 7 ms 3160 KB Output is correct
11 Correct 60 ms 14972 KB Output is correct
12 Correct 11 ms 4700 KB Output is correct
13 Correct 347 ms 10456 KB Output is correct
14 Correct 5 ms 600 KB Output is correct
15 Correct 10 ms 860 KB Output is correct
16 Correct 121 ms 26024 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 322 ms 63064 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 2 ms 600 KB Output is correct
26 Correct 35 ms 1220 KB Output is correct
27 Correct 30 ms 1372 KB Output is correct
28 Correct 121 ms 26436 KB Output is correct
29 Correct 183 ms 38348 KB Output is correct
30 Correct 237 ms 53136 KB Output is correct
31 Correct 310 ms 62612 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 12 ms 868 KB Output is correct
44 Correct 17 ms 1088 KB Output is correct
45 Correct 108 ms 26272 KB Output is correct
46 Correct 172 ms 39012 KB Output is correct
47 Correct 169 ms 38564 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 106 ms 27260 KB Output is correct
10 Correct 7 ms 3160 KB Output is correct
11 Correct 60 ms 14972 KB Output is correct
12 Correct 11 ms 4700 KB Output is correct
13 Correct 347 ms 10456 KB Output is correct
14 Correct 5 ms 600 KB Output is correct
15 Correct 10 ms 860 KB Output is correct
16 Correct 121 ms 26024 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 322 ms 63064 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 2 ms 600 KB Output is correct
26 Correct 35 ms 1220 KB Output is correct
27 Correct 30 ms 1372 KB Output is correct
28 Correct 121 ms 26436 KB Output is correct
29 Correct 183 ms 38348 KB Output is correct
30 Correct 237 ms 53136 KB Output is correct
31 Correct 310 ms 62612 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 12 ms 868 KB Output is correct
44 Correct 17 ms 1088 KB Output is correct
45 Correct 108 ms 26272 KB Output is correct
46 Correct 172 ms 39012 KB Output is correct
47 Correct 169 ms 38564 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 300 ms 57548 KB Output is correct
56 Correct 0 ms 344 KB Output is correct
57 Correct 2 ms 860 KB Output is correct
58 Correct 7 ms 2112 KB Output is correct
59 Correct 98 ms 2592 KB Output is correct
60 Correct 157 ms 30312 KB Output is correct
61 Correct 201 ms 41220 KB Output is correct
62 Correct 236 ms 49308 KB Output is correct
63 Correct 358 ms 58952 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 243 ms 53168 KB Output is correct
68 Correct 269 ms 53156 KB Output is correct
69 Correct 272 ms 53772 KB Output is correct
70 Correct 34 ms 1248 KB Output is correct
71 Correct 61 ms 1884 KB Output is correct
72 Correct 129 ms 25512 KB Output is correct
73 Correct 203 ms 39180 KB Output is correct
74 Correct 259 ms 50824 KB Output is correct
75 Correct 310 ms 58132 KB Output is correct
76 Correct 292 ms 54916 KB Output is correct
77 Correct 37 ms 1372 KB Output is correct
78 Correct 66 ms 2420 KB Output is correct
79 Correct 114 ms 26848 KB Output is correct
80 Correct 189 ms 40788 KB Output is correct
81 Correct 263 ms 54660 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 106 ms 27260 KB Output is correct
10 Correct 7 ms 3160 KB Output is correct
11 Correct 60 ms 14972 KB Output is correct
12 Correct 11 ms 4700 KB Output is correct
13 Correct 347 ms 10456 KB Output is correct
14 Correct 5 ms 600 KB Output is correct
15 Correct 10 ms 860 KB Output is correct
16 Correct 121 ms 26024 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 264 ms 55820 KB Output is correct
21 Correct 284 ms 54516 KB Output is correct
22 Correct 265 ms 53680 KB Output is correct
23 Correct 220 ms 45380 KB Output is correct
24 Correct 488 ms 22988 KB Output is correct
25 Correct 2107 ms 41296 KB Output is correct
26 Correct 1871 ms 41380 KB Output is correct
27 Correct 280 ms 48596 KB Output is correct
28 Correct 257 ms 48776 KB Output is correct
29 Correct 255 ms 48776 KB Output is correct
30 Correct 257 ms 48776 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Incorrect 107 ms 3348 KB Solution announced impossible, but it is possible.
33 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 106 ms 27260 KB Output is correct
10 Correct 7 ms 3160 KB Output is correct
11 Correct 60 ms 14972 KB Output is correct
12 Correct 11 ms 4700 KB Output is correct
13 Correct 347 ms 10456 KB Output is correct
14 Correct 5 ms 600 KB Output is correct
15 Correct 10 ms 860 KB Output is correct
16 Correct 121 ms 26024 KB Output is correct
17 Correct 248 ms 55308 KB Output is correct
18 Correct 279 ms 54796 KB Output is correct
19 Correct 293 ms 54036 KB Output is correct
20 Correct 279 ms 59064 KB Output is correct
21 Correct 228 ms 48068 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Incorrect 265 ms 7224 KB Solution announced impossible, but it is possible.
24 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 106 ms 27260 KB Output is correct
10 Correct 7 ms 3160 KB Output is correct
11 Correct 60 ms 14972 KB Output is correct
12 Correct 11 ms 4700 KB Output is correct
13 Correct 347 ms 10456 KB Output is correct
14 Correct 5 ms 600 KB Output is correct
15 Correct 10 ms 860 KB Output is correct
16 Correct 121 ms 26024 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 322 ms 63064 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 2 ms 600 KB Output is correct
26 Correct 35 ms 1220 KB Output is correct
27 Correct 30 ms 1372 KB Output is correct
28 Correct 121 ms 26436 KB Output is correct
29 Correct 183 ms 38348 KB Output is correct
30 Correct 237 ms 53136 KB Output is correct
31 Correct 310 ms 62612 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 12 ms 868 KB Output is correct
44 Correct 17 ms 1088 KB Output is correct
45 Correct 108 ms 26272 KB Output is correct
46 Correct 172 ms 39012 KB Output is correct
47 Correct 169 ms 38564 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 300 ms 57548 KB Output is correct
56 Correct 0 ms 344 KB Output is correct
57 Correct 2 ms 860 KB Output is correct
58 Correct 7 ms 2112 KB Output is correct
59 Correct 98 ms 2592 KB Output is correct
60 Correct 157 ms 30312 KB Output is correct
61 Correct 201 ms 41220 KB Output is correct
62 Correct 236 ms 49308 KB Output is correct
63 Correct 358 ms 58952 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 243 ms 53168 KB Output is correct
68 Correct 269 ms 53156 KB Output is correct
69 Correct 272 ms 53772 KB Output is correct
70 Correct 34 ms 1248 KB Output is correct
71 Correct 61 ms 1884 KB Output is correct
72 Correct 129 ms 25512 KB Output is correct
73 Correct 203 ms 39180 KB Output is correct
74 Correct 259 ms 50824 KB Output is correct
75 Correct 310 ms 58132 KB Output is correct
76 Correct 292 ms 54916 KB Output is correct
77 Correct 37 ms 1372 KB Output is correct
78 Correct 66 ms 2420 KB Output is correct
79 Correct 114 ms 26848 KB Output is correct
80 Correct 189 ms 40788 KB Output is correct
81 Correct 263 ms 54660 KB Output is correct
82 Correct 0 ms 344 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 264 ms 55820 KB Output is correct
86 Correct 284 ms 54516 KB Output is correct
87 Correct 265 ms 53680 KB Output is correct
88 Correct 220 ms 45380 KB Output is correct
89 Correct 488 ms 22988 KB Output is correct
90 Correct 2107 ms 41296 KB Output is correct
91 Correct 1871 ms 41380 KB Output is correct
92 Correct 280 ms 48596 KB Output is correct
93 Correct 257 ms 48776 KB Output is correct
94 Correct 255 ms 48776 KB Output is correct
95 Correct 257 ms 48776 KB Output is correct
96 Correct 1 ms 348 KB Output is correct
97 Incorrect 107 ms 3348 KB Solution announced impossible, but it is possible.
98 Halted 0 ms 0 KB -