oj.uz

Submission #809070

# Submission time Handle Problem Language Result Execution time Memory
809070 2023-08-05T15:29:21 Z puppy Fountain Parks (IOI21_parks) C++17
30 / 100
 112 ms 21644 KB 
#include "parks.h"
#include <vector>
using namespace std;
int coord[3][100005];
bool bench[4][100005];
struct UnionFind
{
    vector<int> par;
    UnionFind(int N)
    {
        par.resize(N+1);
        for (int i = 0; i <= N; i++) par[i] = i;
    }
    int fin(int v)
    {
        return v == par[v] ? v : (par[v] = fin(par[v]));
    }
    void uni(int u, int v)
    {
        par[fin(u)] = fin(v);
    }
    bool isuni(int u, int v)
    {
        return fin(u) == fin(v);
    }
};

int construct_roads(std::vector<int> x, std::vector<int> y) {
    int N = x.size();
    fill(&coord[0][0], &coord[2][100005], -1);
    for (int i = 0; i < N; i++) {
        coord[(x[i]-2)/2][y[i]/2] = i;
    }
    UnionFind uf(N);
    vector<int> u, v, a, b;
    for (int i = 1; i < 100000; i++) {
        if (coord[0][i] != -1 && coord[0][i+1] != -1) {
            uf.uni(coord[0][i], coord[0][i+1]);
            u.push_back(coord[0][i]);
            v.push_back(coord[0][i+1]);
            a.push_back(1);
            b.push_back(2*i+1);
        }
        if (coord[2][i] != -1 && coord[2][i+1] != -1) {
            uf.uni(coord[2][i], coord[2][i+1]);
            u.push_back(coord[2][i]);
            v.push_back(coord[2][i+1]);
            a.push_back(7);
            b.push_back(2*i+1);
        }
    }
    vector<pair<int, int>> edge;
    for (int i = 1; i <= 100000; i++) {
        if (coord[0][i] != -1 && coord[1][i] != -1) {
            uf.uni(coord[0][i], coord[1][i]);
            edge.push_back(make_pair(coord[0][i], coord[1][i]));
        }
        if (coord[1][i] != -1 && coord[2][i] != -1) {
            uf.uni(coord[1][i], coord[2][i]);
            edge.push_back(make_pair(coord[1][i], coord[2][i]));
        }
    }
    bool flag = false;
    for (int i = 1; i < 100000; i++) {
        if (coord[1][i] != -1 && coord[1][i+1] != -1) {
            if (uf.isuni(coord[1][i], coord[1][i+1])) continue;
            uf.uni(coord[1][i], coord[1][i+1]);
            u.push_back(coord[1][i]);
            v.push_back(coord[1][i+1]);
            b.push_back(2*i+1);
            if (!flag) a.push_back(3);
            else a.push_back(5);
            bench[a.back()/2][b.back()/2] = true;
            flag = !flag;
        }
    }
    for (pair<int, int> p:edge) {
        u.push_back(p.first);
        v.push_back(p.second);
        int xc = x[p.first] + x[p.second] >> 1;
        int yc = y[p.first];
        a.push_back(xc);
        if (!bench[xc/2][yc/2-1]) b.push_back(yc-1);
        else b.push_back(yc+1);
        bench[a.back()/2][b.back()/2] = true;
    }
    for (int i = 0; i < N; i++) {
        if (!uf.isuni(0, i)) return 0;
    }
    build(u, v, a, b);
    return 1;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:80:29: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   80 |         int xc = x[p.first] + x[p.second] >> 1;

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1364 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1428 KB Output is correct
8 Correct 1 ms 1364 KB Output is correct
9 Correct 39 ms 9284 KB Output is correct
10 Correct 4 ms 2388 KB Output is correct
11 Correct 19 ms 5812 KB Output is correct
12 Correct 7 ms 2900 KB Output is correct
13 Correct 9 ms 3532 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 38 ms 8764 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1364 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1428 KB Output is correct
8 Correct 1 ms 1364 KB Output is correct
9 Correct 39 ms 9284 KB Output is correct
10 Correct 4 ms 2388 KB Output is correct
11 Correct 19 ms 5812 KB Output is correct
12 Correct 7 ms 2900 KB Output is correct
13 Correct 9 ms 3532 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 38 ms 8764 KB Output is correct
17 Correct 1 ms 1364 KB Output is correct
18 Correct 1 ms 1364 KB Output is correct
19 Correct 1 ms 1364 KB Output is correct
20 Correct 1 ms 1364 KB Output is correct
21 Correct 1 ms 1364 KB Output is correct
22 Correct 1 ms 1364 KB Output is correct
23 Correct 82 ms 16928 KB Output is correct
24 Correct 1 ms 1364 KB Output is correct
25 Correct 2 ms 1492 KB Output is correct
26 Correct 2 ms 1620 KB Output is correct
27 Correct 2 ms 1748 KB Output is correct
28 Correct 32 ms 8328 KB Output is correct
29 Correct 49 ms 11824 KB Output is correct
30 Correct 66 ms 15268 KB Output is correct
31 Correct 82 ms 18628 KB Output is correct
32 Correct 1 ms 1364 KB Output is correct
33 Correct 1 ms 1364 KB Output is correct
34 Correct 1 ms 1364 KB Output is correct
35 Correct 1 ms 1364 KB Output is correct
36 Correct 1 ms 1364 KB Output is correct
37 Correct 1 ms 1364 KB Output is correct
38 Correct 1 ms 1452 KB Output is correct
39 Correct 1 ms 1364 KB Output is correct
40 Correct 1 ms 1452 KB Output is correct
41 Correct 1 ms 1364 KB Output is correct
42 Correct 1 ms 1364 KB Output is correct
43 Correct 1 ms 1596 KB Output is correct
44 Correct 2 ms 1596 KB Output is correct
45 Correct 40 ms 9716 KB Output is correct
46 Correct 60 ms 13344 KB Output is correct
47 Correct 57 ms 13088 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1364 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1428 KB Output is correct
8 Correct 1 ms 1364 KB Output is correct
9 Correct 39 ms 9284 KB Output is correct
10 Correct 4 ms 2388 KB Output is correct
11 Correct 19 ms 5812 KB Output is correct
12 Correct 7 ms 2900 KB Output is correct
13 Correct 9 ms 3532 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 38 ms 8764 KB Output is correct
17 Correct 1 ms 1364 KB Output is correct
18 Correct 1 ms 1364 KB Output is correct
19 Correct 1 ms 1364 KB Output is correct
20 Correct 1 ms 1364 KB Output is correct
21 Correct 1 ms 1364 KB Output is correct
22 Correct 1 ms 1364 KB Output is correct
23 Correct 82 ms 16928 KB Output is correct
24 Correct 1 ms 1364 KB Output is correct
25 Correct 2 ms 1492 KB Output is correct
26 Correct 2 ms 1620 KB Output is correct
27 Correct 2 ms 1748 KB Output is correct
28 Correct 32 ms 8328 KB Output is correct
29 Correct 49 ms 11824 KB Output is correct
30 Correct 66 ms 15268 KB Output is correct
31 Correct 82 ms 18628 KB Output is correct
32 Correct 1 ms 1364 KB Output is correct
33 Correct 1 ms 1364 KB Output is correct
34 Correct 1 ms 1364 KB Output is correct
35 Correct 1 ms 1364 KB Output is correct
36 Correct 1 ms 1364 KB Output is correct
37 Correct 1 ms 1364 KB Output is correct
38 Correct 1 ms 1452 KB Output is correct
39 Correct 1 ms 1364 KB Output is correct
40 Correct 1 ms 1452 KB Output is correct
41 Correct 1 ms 1364 KB Output is correct
42 Correct 1 ms 1364 KB Output is correct
43 Correct 1 ms 1596 KB Output is correct
44 Correct 2 ms 1596 KB Output is correct
45 Correct 40 ms 9716 KB Output is correct
46 Correct 60 ms 13344 KB Output is correct
47 Correct 57 ms 13088 KB Output is correct
48 Correct 1 ms 1364 KB Output is correct
49 Correct 1 ms 1364 KB Output is correct
50 Correct 1 ms 1364 KB Output is correct
51 Correct 1 ms 1364 KB Output is correct
52 Correct 1 ms 1364 KB Output is correct
53 Correct 1 ms 1364 KB Output is correct
54 Correct 1 ms 1364 KB Output is correct
55 Correct 98 ms 21576 KB Output is correct
56 Correct 1 ms 1364 KB Output is correct
57 Correct 2 ms 1620 KB Output is correct
58 Correct 4 ms 2260 KB Output is correct
59 Correct 3 ms 2160 KB Output is correct
60 Correct 47 ms 11528 KB Output is correct
61 Correct 65 ms 14992 KB Output is correct
62 Correct 79 ms 18176 KB Output is correct
63 Correct 112 ms 21644 KB Output is correct
64 Correct 1 ms 1364 KB Output is correct
65 Correct 1 ms 1364 KB Output is correct
66 Correct 1 ms 1364 KB Output is correct
67 Correct 79 ms 17444 KB Output is correct
68 Correct 89 ms 17760 KB Output is correct
69 Correct 77 ms 17032 KB Output is correct
70 Correct 2 ms 1620 KB Output is correct
71 Correct 3 ms 1840 KB Output is correct
72 Correct 45 ms 9512 KB Output is correct
73 Correct 62 ms 13584 KB Output is correct
74 Correct 80 ms 17488 KB Output is correct
75 Correct 87 ms 20116 KB Output is correct
76 Correct 76 ms 17692 KB Output is correct
77 Correct 2 ms 1748 KB Output is correct
78 Correct 3 ms 2004 KB Output is correct
79 Correct 41 ms 9884 KB Output is correct
80 Correct 64 ms 14244 KB Output is correct
81 Correct 84 ms 18584 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1364 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1428 KB Output is correct
8 Correct 1 ms 1364 KB Output is correct
9 Correct 39 ms 9284 KB Output is correct
10 Correct 4 ms 2388 KB Output is correct
11 Correct 19 ms 5812 KB Output is correct
12 Correct 7 ms 2900 KB Output is correct
13 Correct 9 ms 3532 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 38 ms 8764 KB Output is correct
17 Runtime error 3 ms 2772 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1364 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1428 KB Output is correct
8 Correct 1 ms 1364 KB Output is correct
9 Correct 39 ms 9284 KB Output is correct
10 Correct 4 ms 2388 KB Output is correct
11 Correct 19 ms 5812 KB Output is correct
12 Correct 7 ms 2900 KB Output is correct
13 Correct 9 ms 3532 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 38 ms 8764 KB Output is correct
17 Runtime error 36 ms 9108 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 1 ms 1364 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1428 KB Output is correct
8 Correct 1 ms 1364 KB Output is correct
9 Correct 39 ms 9284 KB Output is correct
10 Correct 4 ms 2388 KB Output is correct
11 Correct 19 ms 5812 KB Output is correct
12 Correct 7 ms 2900 KB Output is correct
13 Correct 9 ms 3532 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 38 ms 8764 KB Output is correct
17 Correct 1 ms 1364 KB Output is correct
18 Correct 1 ms 1364 KB Output is correct
19 Correct 1 ms 1364 KB Output is correct
20 Correct 1 ms 1364 KB Output is correct
21 Correct 1 ms 1364 KB Output is correct
22 Correct 1 ms 1364 KB Output is correct
23 Correct 82 ms 16928 KB Output is correct
24 Correct 1 ms 1364 KB Output is correct
25 Correct 2 ms 1492 KB Output is correct
26 Correct 2 ms 1620 KB Output is correct
27 Correct 2 ms 1748 KB Output is correct
28 Correct 32 ms 8328 KB Output is correct
29 Correct 49 ms 11824 KB Output is correct
30 Correct 66 ms 15268 KB Output is correct
31 Correct 82 ms 18628 KB Output is correct
32 Correct 1 ms 1364 KB Output is correct
33 Correct 1 ms 1364 KB Output is correct
34 Correct 1 ms 1364 KB Output is correct
35 Correct 1 ms 1364 KB Output is correct
36 Correct 1 ms 1364 KB Output is correct
37 Correct 1 ms 1364 KB Output is correct
38 Correct 1 ms 1452 KB Output is correct
39 Correct 1 ms 1364 KB Output is correct
40 Correct 1 ms 1452 KB Output is correct
41 Correct 1 ms 1364 KB Output is correct
42 Correct 1 ms 1364 KB Output is correct
43 Correct 1 ms 1596 KB Output is correct
44 Correct 2 ms 1596 KB Output is correct
45 Correct 40 ms 9716 KB Output is correct
46 Correct 60 ms 13344 KB Output is correct
47 Correct 57 ms 13088 KB Output is correct
48 Correct 1 ms 1364 KB Output is correct
49 Correct 1 ms 1364 KB Output is correct
50 Correct 1 ms 1364 KB Output is correct
51 Correct 1 ms 1364 KB Output is correct
52 Correct 1 ms 1364 KB Output is correct
53 Correct 1 ms 1364 KB Output is correct
54 Correct 1 ms 1364 KB Output is correct
55 Correct 98 ms 21576 KB Output is correct
56 Correct 1 ms 1364 KB Output is correct
57 Correct 2 ms 1620 KB Output is correct
58 Correct 4 ms 2260 KB Output is correct
59 Correct 3 ms 2160 KB Output is correct
60 Correct 47 ms 11528 KB Output is correct
61 Correct 65 ms 14992 KB Output is correct
62 Correct 79 ms 18176 KB Output is correct
63 Correct 112 ms 21644 KB Output is correct
64 Correct 1 ms 1364 KB Output is correct
65 Correct 1 ms 1364 KB Output is correct
66 Correct 1 ms 1364 KB Output is correct
67 Correct 79 ms 17444 KB Output is correct
68 Correct 89 ms 17760 KB Output is correct
69 Correct 77 ms 17032 KB Output is correct
70 Correct 2 ms 1620 KB Output is correct
71 Correct 3 ms 1840 KB Output is correct
72 Correct 45 ms 9512 KB Output is correct
73 Correct 62 ms 13584 KB Output is correct
74 Correct 80 ms 17488 KB Output is correct
75 Correct 87 ms 20116 KB Output is correct
76 Correct 76 ms 17692 KB Output is correct
77 Correct 2 ms 1748 KB Output is correct
78 Correct 3 ms 2004 KB Output is correct
79 Correct 41 ms 9884 KB Output is correct
80 Correct 64 ms 14244 KB Output is correct
81 Correct 84 ms 18584 KB Output is correct
82 Runtime error 3 ms 2772 KB Execution killed with signal 11
83 Halted 0 ms 0 KB -