oj.uz

Submission #1021423

# Submission time Handle Problem Language Result Execution time Memory
1021423 2024-07-12T17:51:38 Z Wael Fountain Parks (IOI21_parks) C++17
30 / 100
 401 ms 82360 KB 
#include "parks.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;

struct DSU {
    int n, cnt;
    vector<int> f, sz;
    DSU(int n) : n(n), cnt(n) {
        f.resize(n);
        iota(f.begin(), f.end(), 0);
        sz.resize(n, 1);
    }

    int find(int u) {
        if (f[u] == u) return u;
        return f[u] = find(f[u]);
    }

    void merge(int u, int v) {
        u = find(u);
        v = find(v);
        if (u == v) return;
        --cnt;
        if (sz[v] > sz[u]) {
            swap(u, v);
        }
        f[v] = u;
        sz[u] += sz[v];
    }

    bool same(int u, int v) {
        return find(u) == find(v);
    }
};

int construct_roads(vector<int> x, vector<int> y) {
    int n = x.size();

    int N = 2e5;
    vector<map<int, int>> id(N + 1);

    for (int i = 0; i < n; ++i) {
        id[x[i]][y[i]] = i;
    }

    vector<map<int, int>> vis(N + 10);
    DSU dsu(n);
    vector<int> u, v, a, b;
    for (int i = 0; i < n; ++i) {
        if (id[x[i]].count(y[i] + 2)) {
            int j = id[x[i]][y[i] + 2];
            dsu.merge(i, j);
            u.push_back(i);
            v.push_back(j);
            if (x[i] == 6) {
                a.push_back(x[i] + 1);
                b.push_back(y[i] + 1);
                vis[x[i] + 1][y[i] + 1] = 1;
            } else if (x[i] == 2) {
                a.push_back(x[i] - 1);
                b.push_back(y[i] + 1);
                vis[x[i] - 1][y[i] + 1] = 1;
            } else {
                if ((y[i] / 2) % 2) {
                    a.push_back(x[i] + 1);
                    b.push_back(y[i] + 1);
                    vis[x[i] + 1][y[i] + 1] = 1;
                } else {
                    a.push_back(x[i] - 1);
                    b.push_back(y[i] + 1);
                    vis[x[i] - 1][y[i] + 1] = 1;
                }
            }
        }
    }

    for (int i = 0; i < n; ++i) {
        if (id[x[i] + 2].count(y[i])) {
            int j = id[x[i] + 2][y[i]];
            if (dsu.same(i, j) == 0) {
                u.push_back(i);
                v.push_back(j);
                dsu.merge(i, j);
                if (vis[x[i] + 1][y[i] - 1] == 0) {
                    a.push_back(x[i] + 1);
                    b.push_back(y[i] - 1);
                    vis[x[i] + 1][y[i] - 1] = 1;
                } else if (vis[x[i] + 1][y[i] + 1] == 0) {
                    a.push_back(x[i] + 1);
                    b.push_back(y[i] + 1);
                    vis[x[i] + 1][y[i] + 1] = 1;
                } else {
                    assert(0);
                }
            }
        }
    }

    if (dsu.cnt == 1) {
        build(u, v, a, b);
        return 1;
    }
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 8 ms 19144 KB Output is correct
3 Correct 12 ms 19036 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 9 ms 19036 KB Output is correct
7 Correct 8 ms 19160 KB Output is correct
8 Correct 8 ms 19032 KB Output is correct
9 Correct 143 ms 35512 KB Output is correct
10 Correct 19 ms 20828 KB Output is correct
11 Correct 48 ms 28112 KB Output is correct
12 Correct 17 ms 21716 KB Output is correct
13 Correct 34 ms 25012 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 14 ms 19292 KB Output is correct
16 Correct 169 ms 35620 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 8 ms 19144 KB Output is correct
3 Correct 12 ms 19036 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 9 ms 19036 KB Output is correct
7 Correct 8 ms 19160 KB Output is correct
8 Correct 8 ms 19032 KB Output is correct
9 Correct 143 ms 35512 KB Output is correct
10 Correct 19 ms 20828 KB Output is correct
11 Correct 48 ms 28112 KB Output is correct
12 Correct 17 ms 21716 KB Output is correct
13 Correct 34 ms 25012 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 14 ms 19292 KB Output is correct
16 Correct 169 ms 35620 KB Output is correct
17 Correct 8 ms 19036 KB Output is correct
18 Correct 9 ms 19036 KB Output is correct
19 Correct 9 ms 19036 KB Output is correct
20 Correct 9 ms 19036 KB Output is correct
21 Correct 9 ms 19036 KB Output is correct
22 Correct 9 ms 19036 KB Output is correct
23 Correct 382 ms 53672 KB Output is correct
24 Correct 10 ms 19036 KB Output is correct
25 Correct 9 ms 19352 KB Output is correct
26 Correct 12 ms 19588 KB Output is correct
27 Correct 12 ms 19696 KB Output is correct
28 Correct 136 ms 32988 KB Output is correct
29 Correct 208 ms 39864 KB Output is correct
30 Correct 310 ms 46716 KB Output is correct
31 Correct 384 ms 53724 KB Output is correct
32 Correct 8 ms 19036 KB Output is correct
33 Correct 8 ms 19240 KB Output is correct
34 Correct 9 ms 19036 KB Output is correct
35 Correct 8 ms 19036 KB Output is correct
36 Correct 8 ms 19032 KB Output is correct
37 Correct 9 ms 19036 KB Output is correct
38 Correct 8 ms 19024 KB Output is correct
39 Correct 11 ms 19036 KB Output is correct
40 Correct 9 ms 19036 KB Output is correct
41 Correct 9 ms 19036 KB Output is correct
42 Correct 8 ms 19204 KB Output is correct
43 Correct 10 ms 19292 KB Output is correct
44 Correct 11 ms 19548 KB Output is correct
45 Correct 156 ms 36280 KB Output is correct
46 Correct 255 ms 44260 KB Output is correct
47 Correct 246 ms 44232 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 8 ms 19144 KB Output is correct
3 Correct 12 ms 19036 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 9 ms 19036 KB Output is correct
7 Correct 8 ms 19160 KB Output is correct
8 Correct 8 ms 19032 KB Output is correct
9 Correct 143 ms 35512 KB Output is correct
10 Correct 19 ms 20828 KB Output is correct
11 Correct 48 ms 28112 KB Output is correct
12 Correct 17 ms 21716 KB Output is correct
13 Correct 34 ms 25012 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 14 ms 19292 KB Output is correct
16 Correct 169 ms 35620 KB Output is correct
17 Correct 8 ms 19036 KB Output is correct
18 Correct 9 ms 19036 KB Output is correct
19 Correct 9 ms 19036 KB Output is correct
20 Correct 9 ms 19036 KB Output is correct
21 Correct 9 ms 19036 KB Output is correct
22 Correct 9 ms 19036 KB Output is correct
23 Correct 382 ms 53672 KB Output is correct
24 Correct 10 ms 19036 KB Output is correct
25 Correct 9 ms 19352 KB Output is correct
26 Correct 12 ms 19588 KB Output is correct
27 Correct 12 ms 19696 KB Output is correct
28 Correct 136 ms 32988 KB Output is correct
29 Correct 208 ms 39864 KB Output is correct
30 Correct 310 ms 46716 KB Output is correct
31 Correct 384 ms 53724 KB Output is correct
32 Correct 8 ms 19036 KB Output is correct
33 Correct 8 ms 19240 KB Output is correct
34 Correct 9 ms 19036 KB Output is correct
35 Correct 8 ms 19036 KB Output is correct
36 Correct 8 ms 19032 KB Output is correct
37 Correct 9 ms 19036 KB Output is correct
38 Correct 8 ms 19024 KB Output is correct
39 Correct 11 ms 19036 KB Output is correct
40 Correct 9 ms 19036 KB Output is correct
41 Correct 9 ms 19036 KB Output is correct
42 Correct 8 ms 19204 KB Output is correct
43 Correct 10 ms 19292 KB Output is correct
44 Correct 11 ms 19548 KB Output is correct
45 Correct 156 ms 36280 KB Output is correct
46 Correct 255 ms 44260 KB Output is correct
47 Correct 246 ms 44232 KB Output is correct
48 Correct 9 ms 19036 KB Output is correct
49 Correct 8 ms 19232 KB Output is correct
50 Correct 9 ms 19032 KB Output is correct
51 Correct 9 ms 19036 KB Output is correct
52 Correct 9 ms 19036 KB Output is correct
53 Correct 8 ms 19036 KB Output is correct
54 Correct 9 ms 19036 KB Output is correct
55 Correct 378 ms 53492 KB Output is correct
56 Correct 9 ms 19032 KB Output is correct
57 Correct 10 ms 19292 KB Output is correct
58 Correct 15 ms 20076 KB Output is correct
59 Correct 17 ms 20572 KB Output is correct
60 Correct 169 ms 36376 KB Output is correct
61 Correct 236 ms 42392 KB Output is correct
62 Correct 308 ms 47784 KB Output is correct
63 Correct 391 ms 53668 KB Output is correct
64 Correct 9 ms 19048 KB Output is correct
65 Correct 9 ms 19032 KB Output is correct
66 Correct 9 ms 19036 KB Output is correct
67 Correct 348 ms 53676 KB Output is correct
68 Correct 332 ms 53672 KB Output is correct
69 Correct 343 ms 53516 KB Output is correct
70 Correct 13 ms 19552 KB Output is correct
71 Correct 15 ms 20120 KB Output is correct
72 Correct 166 ms 36276 KB Output is correct
73 Correct 257 ms 45160 KB Output is correct
74 Correct 395 ms 53668 KB Output is correct
75 Correct 359 ms 53532 KB Output is correct
76 Correct 327 ms 53668 KB Output is correct
77 Correct 15 ms 19800 KB Output is correct
78 Correct 16 ms 20572 KB Output is correct
79 Correct 161 ms 36384 KB Output is correct
80 Correct 261 ms 44964 KB Output is correct
81 Correct 401 ms 53780 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 8 ms 19144 KB Output is correct
3 Correct 12 ms 19036 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 9 ms 19036 KB Output is correct
7 Correct 8 ms 19160 KB Output is correct
8 Correct 8 ms 19032 KB Output is correct
9 Correct 143 ms 35512 KB Output is correct
10 Correct 19 ms 20828 KB Output is correct
11 Correct 48 ms 28112 KB Output is correct
12 Correct 17 ms 21716 KB Output is correct
13 Correct 34 ms 25012 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 14 ms 19292 KB Output is correct
16 Correct 169 ms 35620 KB Output is correct
17 Correct 8 ms 19032 KB Output is correct
18 Correct 9 ms 19032 KB Output is correct
19 Correct 8 ms 19036 KB Output is correct
20 Runtime error 132 ms 79936 KB Execution killed with signal 6
21 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 8 ms 19144 KB Output is correct
3 Correct 12 ms 19036 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 9 ms 19036 KB Output is correct
7 Correct 8 ms 19160 KB Output is correct
8 Correct 8 ms 19032 KB Output is correct
9 Correct 143 ms 35512 KB Output is correct
10 Correct 19 ms 20828 KB Output is correct
11 Correct 48 ms 28112 KB Output is correct
12 Correct 17 ms 21716 KB Output is correct
13 Correct 34 ms 25012 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 14 ms 19292 KB Output is correct
16 Correct 169 ms 35620 KB Output is correct
17 Correct 322 ms 52132 KB Output is correct
18 Correct 282 ms 54204 KB Output is correct
19 Runtime error 125 ms 82360 KB Execution killed with signal 6
20 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 8 ms 19144 KB Output is correct
3 Correct 12 ms 19036 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 9 ms 19036 KB Output is correct
7 Correct 8 ms 19160 KB Output is correct
8 Correct 8 ms 19032 KB Output is correct
9 Correct 143 ms 35512 KB Output is correct
10 Correct 19 ms 20828 KB Output is correct
11 Correct 48 ms 28112 KB Output is correct
12 Correct 17 ms 21716 KB Output is correct
13 Correct 34 ms 25012 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 14 ms 19292 KB Output is correct
16 Correct 169 ms 35620 KB Output is correct
17 Correct 8 ms 19036 KB Output is correct
18 Correct 9 ms 19036 KB Output is correct
19 Correct 9 ms 19036 KB Output is correct
20 Correct 9 ms 19036 KB Output is correct
21 Correct 9 ms 19036 KB Output is correct
22 Correct 9 ms 19036 KB Output is correct
23 Correct 382 ms 53672 KB Output is correct
24 Correct 10 ms 19036 KB Output is correct
25 Correct 9 ms 19352 KB Output is correct
26 Correct 12 ms 19588 KB Output is correct
27 Correct 12 ms 19696 KB Output is correct
28 Correct 136 ms 32988 KB Output is correct
29 Correct 208 ms 39864 KB Output is correct
30 Correct 310 ms 46716 KB Output is correct
31 Correct 384 ms 53724 KB Output is correct
32 Correct 8 ms 19036 KB Output is correct
33 Correct 8 ms 19240 KB Output is correct
34 Correct 9 ms 19036 KB Output is correct
35 Correct 8 ms 19036 KB Output is correct
36 Correct 8 ms 19032 KB Output is correct
37 Correct 9 ms 19036 KB Output is correct
38 Correct 8 ms 19024 KB Output is correct
39 Correct 11 ms 19036 KB Output is correct
40 Correct 9 ms 19036 KB Output is correct
41 Correct 9 ms 19036 KB Output is correct
42 Correct 8 ms 19204 KB Output is correct
43 Correct 10 ms 19292 KB Output is correct
44 Correct 11 ms 19548 KB Output is correct
45 Correct 156 ms 36280 KB Output is correct
46 Correct 255 ms 44260 KB Output is correct
47 Correct 246 ms 44232 KB Output is correct
48 Correct 9 ms 19036 KB Output is correct
49 Correct 8 ms 19232 KB Output is correct
50 Correct 9 ms 19032 KB Output is correct
51 Correct 9 ms 19036 KB Output is correct
52 Correct 9 ms 19036 KB Output is correct
53 Correct 8 ms 19036 KB Output is correct
54 Correct 9 ms 19036 KB Output is correct
55 Correct 378 ms 53492 KB Output is correct
56 Correct 9 ms 19032 KB Output is correct
57 Correct 10 ms 19292 KB Output is correct
58 Correct 15 ms 20076 KB Output is correct
59 Correct 17 ms 20572 KB Output is correct
60 Correct 169 ms 36376 KB Output is correct
61 Correct 236 ms 42392 KB Output is correct
62 Correct 308 ms 47784 KB Output is correct
63 Correct 391 ms 53668 KB Output is correct
64 Correct 9 ms 19048 KB Output is correct
65 Correct 9 ms 19032 KB Output is correct
66 Correct 9 ms 19036 KB Output is correct
67 Correct 348 ms 53676 KB Output is correct
68 Correct 332 ms 53672 KB Output is correct
69 Correct 343 ms 53516 KB Output is correct
70 Correct 13 ms 19552 KB Output is correct
71 Correct 15 ms 20120 KB Output is correct
72 Correct 166 ms 36276 KB Output is correct
73 Correct 257 ms 45160 KB Output is correct
74 Correct 395 ms 53668 KB Output is correct
75 Correct 359 ms 53532 KB Output is correct
76 Correct 327 ms 53668 KB Output is correct
77 Correct 15 ms 19800 KB Output is correct
78 Correct 16 ms 20572 KB Output is correct
79 Correct 161 ms 36384 KB Output is correct
80 Correct 261 ms 44964 KB Output is correct
81 Correct 401 ms 53780 KB Output is correct
82 Correct 8 ms 19032 KB Output is correct
83 Correct 9 ms 19032 KB Output is correct
84 Correct 8 ms 19036 KB Output is correct
85 Runtime error 132 ms 79936 KB Execution killed with signal 6
86 Halted 0 ms 0 KB -