oj.uz

Submission #1051908

# Submission time Handle Problem Language Result Execution time Memory
1051908 2024-08-10T10:31:45 Z amine_aroua Fountain Parks (IOI21_parks) C++17
30 / 100
 328 ms 39348 KB 
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
struct DSU 
{
    vector<int> e;
    DSU(int n)
    {
        e.assign(n , -1);
    }
    int get(int u )
    {
        return (e[u] < 0 ? u : e[u] = get(e[u]));
    }
    bool same(int u , int v)
    {
        return get(u) == get(v);
    }
    bool unite(int u , int v)
    {
        u = get(u ) , v =get(v);
        if(u == v)
            return 0;
        if(e[u] > e[v])
            swap(u , v);
        e[u]+=e[v];
        e[v] = u;
        return 1;
    }
};
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();
    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());
    u.clear();
    v.clear();
    a.clear();
    b.clear();
    taken.clear();
    for(int i = 0 ; i < n ;i++)
    {
        x[i] = vv[i].first , y[i] = vv[i].second;
    }
    DSU dsu(n);
    for(int i = 0 ; i < n ;i++)
    {
        if(idx.count({x[i] + 2 , y[i]}) && dsu.unite(idx[{x[i] , y[i]}] , idx[{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}) && dsu.unite(idx[{x[i] , y[i]}] , idx[{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});
            }
        }
    }
    set<int> s;
    for(int i = 0 ;i < n ;i++)
    {
        s.insert(dsu.get(i));
    }
    if((int)s.size() == 1)
    {
        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 344 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 1 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 1 ms 348 KB Output is correct
9 Correct 105 ms 19192 KB Output is correct
10 Correct 8 ms 2396 KB Output is correct
11 Correct 59 ms 10368 KB Output is correct
12 Correct 12 ms 3420 KB Output is correct
13 Correct 35 ms 7048 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 111 ms 19364 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 1 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 1 ms 348 KB Output is correct
9 Correct 105 ms 19192 KB Output is correct
10 Correct 8 ms 2396 KB Output is correct
11 Correct 59 ms 10368 KB Output is correct
12 Correct 12 ms 3420 KB Output is correct
13 Correct 35 ms 7048 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 111 ms 19364 KB Output is correct
17 Correct 0 ms 348 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 281 ms 38476 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 576 KB Output is correct
26 Correct 2 ms 816 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 89 ms 15552 KB Output is correct
29 Correct 134 ms 23100 KB Output is correct
30 Correct 196 ms 31128 KB Output is correct
31 Correct 242 ms 38536 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 600 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 2 ms 860 KB Output is correct
45 Correct 102 ms 19224 KB Output is correct
46 Correct 164 ms 28648 KB Output is correct
47 Correct 157 ms 28660 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 1 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 1 ms 348 KB Output is correct
9 Correct 105 ms 19192 KB Output is correct
10 Correct 8 ms 2396 KB Output is correct
11 Correct 59 ms 10368 KB Output is correct
12 Correct 12 ms 3420 KB Output is correct
13 Correct 35 ms 7048 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 111 ms 19364 KB Output is correct
17 Correct 0 ms 348 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 281 ms 38476 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 576 KB Output is correct
26 Correct 2 ms 816 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 89 ms 15552 KB Output is correct
29 Correct 134 ms 23100 KB Output is correct
30 Correct 196 ms 31128 KB Output is correct
31 Correct 242 ms 38536 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 600 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 2 ms 860 KB Output is correct
45 Correct 102 ms 19224 KB Output is correct
46 Correct 164 ms 28648 KB Output is correct
47 Correct 157 ms 28660 KB Output is correct
48 Correct 0 ms 344 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 344 KB Output is correct
55 Correct 251 ms 38528 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 5 ms 1628 KB Output is correct
59 Correct 8 ms 1880 KB Output is correct
60 Correct 112 ms 19312 KB Output is correct
61 Correct 157 ms 27156 KB Output is correct
62 Correct 227 ms 32156 KB Output is correct
63 Correct 250 ms 38664 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 250 ms 38536 KB Output is correct
68 Correct 230 ms 38480 KB Output is correct
69 Correct 233 ms 38280 KB Output is correct
70 Correct 4 ms 860 KB Output is correct
71 Correct 6 ms 1628 KB Output is correct
72 Correct 103 ms 19308 KB Output is correct
73 Correct 177 ms 29324 KB Output is correct
74 Correct 272 ms 38636 KB Output is correct
75 Correct 246 ms 38532 KB Output is correct
76 Correct 235 ms 38536 KB Output is correct
77 Correct 4 ms 1116 KB Output is correct
78 Correct 7 ms 1628 KB Output is correct
79 Correct 104 ms 19276 KB Output is correct
80 Correct 166 ms 29468 KB Output is correct
81 Correct 242 ms 38540 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 1 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 1 ms 348 KB Output is correct
9 Correct 105 ms 19192 KB Output is correct
10 Correct 8 ms 2396 KB Output is correct
11 Correct 59 ms 10368 KB Output is correct
12 Correct 12 ms 3420 KB Output is correct
13 Correct 35 ms 7048 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 111 ms 19364 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 245 ms 39348 KB Output is correct
21 Correct 245 ms 39300 KB Output is correct
22 Correct 252 ms 39300 KB Output is correct
23 Correct 231 ms 33184 KB Output is correct
24 Correct 147 ms 27592 KB Output is correct
25 Correct 210 ms 31152 KB Output is correct
26 Correct 204 ms 31176 KB Output is correct
27 Correct 256 ms 38556 KB Output is correct
28 Correct 244 ms 38536 KB Output is correct
29 Correct 262 ms 38528 KB Output is correct
30 Correct 328 ms 38372 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Incorrect 13 ms 3164 KB Given structure is not connected: There is no path between vertices 0 and 1
33 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 1 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 1 ms 348 KB Output is correct
9 Correct 105 ms 19192 KB Output is correct
10 Correct 8 ms 2396 KB Output is correct
11 Correct 59 ms 10368 KB Output is correct
12 Correct 12 ms 3420 KB Output is correct
13 Correct 35 ms 7048 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 111 ms 19364 KB Output is correct
17 Correct 252 ms 38928 KB Output is correct
18 Correct 277 ms 39044 KB Output is correct
19 Correct 295 ms 39184 KB Output is correct
20 Correct 267 ms 37548 KB Output is correct
21 Correct 212 ms 33788 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Incorrect 37 ms 6456 KB Given structure is not connected: There is no path between vertices 0 and 2
24 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 1 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 1 ms 348 KB Output is correct
9 Correct 105 ms 19192 KB Output is correct
10 Correct 8 ms 2396 KB Output is correct
11 Correct 59 ms 10368 KB Output is correct
12 Correct 12 ms 3420 KB Output is correct
13 Correct 35 ms 7048 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 111 ms 19364 KB Output is correct
17 Correct 0 ms 348 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 281 ms 38476 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 576 KB Output is correct
26 Correct 2 ms 816 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 89 ms 15552 KB Output is correct
29 Correct 134 ms 23100 KB Output is correct
30 Correct 196 ms 31128 KB Output is correct
31 Correct 242 ms 38536 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 600 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 2 ms 860 KB Output is correct
45 Correct 102 ms 19224 KB Output is correct
46 Correct 164 ms 28648 KB Output is correct
47 Correct 157 ms 28660 KB Output is correct
48 Correct 0 ms 344 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 344 KB Output is correct
55 Correct 251 ms 38528 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 5 ms 1628 KB Output is correct
59 Correct 8 ms 1880 KB Output is correct
60 Correct 112 ms 19312 KB Output is correct
61 Correct 157 ms 27156 KB Output is correct
62 Correct 227 ms 32156 KB Output is correct
63 Correct 250 ms 38664 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 250 ms 38536 KB Output is correct
68 Correct 230 ms 38480 KB Output is correct
69 Correct 233 ms 38280 KB Output is correct
70 Correct 4 ms 860 KB Output is correct
71 Correct 6 ms 1628 KB Output is correct
72 Correct 103 ms 19308 KB Output is correct
73 Correct 177 ms 29324 KB Output is correct
74 Correct 272 ms 38636 KB Output is correct
75 Correct 246 ms 38532 KB Output is correct
76 Correct 235 ms 38536 KB Output is correct
77 Correct 4 ms 1116 KB Output is correct
78 Correct 7 ms 1628 KB Output is correct
79 Correct 104 ms 19276 KB Output is correct
80 Correct 166 ms 29468 KB Output is correct
81 Correct 242 ms 38540 KB Output is correct
82 Correct 1 ms 344 KB Output is correct
83 Correct 0 ms 344 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 245 ms 39348 KB Output is correct
86 Correct 245 ms 39300 KB Output is correct
87 Correct 252 ms 39300 KB Output is correct
88 Correct 231 ms 33184 KB Output is correct
89 Correct 147 ms 27592 KB Output is correct
90 Correct 210 ms 31152 KB Output is correct
91 Correct 204 ms 31176 KB Output is correct
92 Correct 256 ms 38556 KB Output is correct
93 Correct 244 ms 38536 KB Output is correct
94 Correct 262 ms 38528 KB Output is correct
95 Correct 328 ms 38372 KB Output is correct
96 Correct 0 ms 344 KB Output is correct
97 Incorrect 13 ms 3164 KB Given structure is not connected: There is no path between vertices 0 and 1
98 Halted 0 ms 0 KB -