oj.uz

Submission #1061576

# Submission time Handle Problem Language Result Execution time Memory
1061576 2024-08-16T11:00:31 Z TheQuantiX Fountain Parks (IOI21_parks) C++17
30 / 100
 3500 ms 114384 KB 
#include<bits/stdc++.h>
#include "parks.h"
#pragma GCC optimize("O3,unroll-loops")

using namespace std;
using ll = int;

ll n, m, q, k, x, y, a, b, c;
unordered_map< long long, vector< pair< pair<ll, ll>, pair<ll, ll> > > > G;
vector< pair< pair<ll, ll>, pair<ll, ll> > > prs;

struct dsu {
    ll n;
    vector<ll> par;
    vector<ll> sz;
    
    dsu(ll N) : n(N) {
        par.resize(n);
        sz.resize(n);
        for (int i = 0; i < n; i++) {
            par[i] = i;
            sz[i] = 1;
        }
    }

    ll find_p(ll x) {
        if (par[x] == x) {
            return x;
        }
        ll p = find_p(par[x]);
        par[x] = p;
        return p;
    }

    void join(ll x, ll y) {
        x = find_p(x);
        y = find_p(y);
        if (x == y) {
            return;
        }
        if (sz[y] > sz[x]) {
            swap(x, y);
        }
        par[y] = x;
        sz[x] += sz[y];
    }
};

long long hsh(pair<ll, ll> p) {
    return p.first * 10000000LL + p.second;
}

long long hsh(pair< pair<ll, ll>, pair<ll, ll> > p) {
    return (p.first.first * 10000000LL + p.first.second) + (10000000LL * 10000000LL * (p.first > p.second));
}

void dfs(pair< pair<ll, ll>, pair<ll, ll> > x, unordered_set<long long> &mp, vector< pair< pair<ll, ll>, pair<ll, ll> > > &mp1) {
    // cout << x.first.first << ' ';
    // cout << x.first.second << '\t';
    // cout << x.second.first << ' ';
    // cout << x.second.second << '\n';
    mp.insert(hsh(x));
    mp1.push_back(x);
    for (auto i : G[hsh(x)]) {
        if (!mp.count(hsh(i.first))) {
            dfs(i, mp, mp1);
        }
    }
}

int construct_roads(vector<int> x, vector<int> y) {
    n = x.size();
    array< vector<int>, 4 > ans;
    map< pair<ll, ll>, ll > pts;
    for (int i = 0; i < n; i++) {
        pts[{x[i], y[i]}] = i;
    }
    dsu d(n);
    map< pair<ll, ll>, vector< pair<ll, ll> > > vec;
    for (int i = 0; i < n; i++) {
        if (pts.count({x[i], y[i] - 2}) && d.find_p(i) != d.find_p(pts[{x[i], y[i] - 2}])) {
            d.join(i, pts[{x[i], y[i] - 2}]);
            vec[{x[i] - 1, y[i] - 1}].push_back({x[i], y[i] - 1});
            vec[{x[i] + 1, y[i] - 1}].push_back({x[i], y[i] - 1});
        }
        if (pts.count({x[i], y[i] + 2}) && d.find_p(i) != d.find_p(pts[{x[i], y[i] + 2}])) {
            d.join(i, pts[{x[i], y[i] + 2}]);
            vec[{x[i] - 1, y[i] + 1}].push_back({x[i], y[i] + 1});
            vec[{x[i] + 1, y[i] + 1}].push_back({x[i], y[i] + 1});
        }
    }
    for (int i = 0; i < n; i++) {
        if (pts.count({x[i] - 2, y[i]}) && d.find_p(i) != d.find_p(pts[{x[i] - 2, y[i]}])) {
            d.join(i, pts[{x[i] - 2, y[i]}]);
            vec[{x[i] - 1, y[i] + 1}].push_back({x[i] - 1, y[i]});
            vec[{x[i] - 1, y[i] - 1}].push_back({x[i] - 1, y[i]});
        }
        if (pts.count({x[i] + 2, y[i]}) && d.find_p(i) != d.find_p(pts[{x[i] + 2, y[i]}])) {
            d.join(i, pts[{x[i] + 2, y[i]}]);
            vec[{x[i] + 1, y[i] + 1}].push_back({x[i] + 1, y[i]});
            vec[{x[i] + 1, y[i] - 1}].push_back({x[i] + 1, y[i]});
        }
    }
    if (d.sz[d.find_p(0)] != n) {
        return 0;
    }
    for (auto &i : vec) {
        // cout << i.first.first << ' ' << i.first.second << '\n';
        for (auto j : i.second) {
            prs.push_back({j, i.first});
            // cout << '\t' << j.first << ' ' << j.second << '\n';
            for (auto k : i.second) {
                if (j != k) {
                    G[hsh({j, i.first})].push_back({k, {k.first + (k.first - i.first.first), k.second + (k.second - i.first.second)}});
                    // cout << "\t\t" << k.first + (k.first - i.first.first) << ' ' << k.second + (k.second - i.first.second) << '\n';
                }
            }
        }
    }
    unordered_set<long long> mp;
    for (auto i : prs) {
        // cout << i.first.first.first << ' ' << i.first.first.second << '\n';
        if (mp.count(hsh(i.first))) {
            continue;
        }
        unordered_set<long long> mp2;
        vector< pair< pair<ll, ll>, pair<ll, ll> > > mp1;
        dfs(i, mp2, mp1);
        for (auto j : mp1) {
            if (mp.count(hsh(j.first))) {
                continue;
            }
            if (j.first.first % 2 == 0) {
                ans[0].push_back(pts[{j.first.first, j.first.second - 1}]);
                ans[1].push_back(pts[{j.first.first, j.first.second + 1}]);
            }
            else {
                ans[0].push_back(pts[{j.first.first - 1, j.first.second}]);
                ans[1].push_back(pts[{j.first.first + 1, j.first.second}]);
            }
            ans[2].push_back(j.second.first);
            ans[3].push_back(j.second.second);
            mp.insert(hsh(j.first));
        }
    }
    build(ans[0], ans[1], ans[2], ans[3]);
    return 1;
}

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 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 311 ms 50052 KB Output is correct
10 Correct 19 ms 5336 KB Output is correct
11 Correct 103 ms 26748 KB Output is correct
12 Correct 25 ms 7880 KB Output is correct
13 Correct 56 ms 13908 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 329 ms 51052 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 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 311 ms 50052 KB Output is correct
10 Correct 19 ms 5336 KB Output is correct
11 Correct 103 ms 26748 KB Output is correct
12 Correct 25 ms 7880 KB Output is correct
13 Correct 56 ms 13908 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 329 ms 51052 KB Output is correct
17 Correct 1 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 895 ms 101192 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 3 ms 944 KB Output is correct
26 Correct 4 ms 1116 KB Output is correct
27 Correct 6 ms 1420 KB Output is correct
28 Correct 291 ms 41376 KB Output is correct
29 Correct 478 ms 60508 KB Output is correct
30 Correct 660 ms 81548 KB Output is correct
31 Correct 924 ms 101200 KB Output is correct
32 Correct 0 ms 344 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 344 KB Output is correct
40 Correct 0 ms 344 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 4 ms 904 KB Output is correct
44 Correct 4 ms 1116 KB Output is correct
45 Correct 375 ms 50368 KB Output is correct
46 Correct 647 ms 75984 KB Output is correct
47 Correct 645 ms 75728 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 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 311 ms 50052 KB Output is correct
10 Correct 19 ms 5336 KB Output is correct
11 Correct 103 ms 26748 KB Output is correct
12 Correct 25 ms 7880 KB Output is correct
13 Correct 56 ms 13908 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 329 ms 51052 KB Output is correct
17 Correct 1 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 895 ms 101192 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 3 ms 944 KB Output is correct
26 Correct 4 ms 1116 KB Output is correct
27 Correct 6 ms 1420 KB Output is correct
28 Correct 291 ms 41376 KB Output is correct
29 Correct 478 ms 60508 KB Output is correct
30 Correct 660 ms 81548 KB Output is correct
31 Correct 924 ms 101200 KB Output is correct
32 Correct 0 ms 344 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 344 KB Output is correct
40 Correct 0 ms 344 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 4 ms 904 KB Output is correct
44 Correct 4 ms 1116 KB Output is correct
45 Correct 375 ms 50368 KB Output is correct
46 Correct 647 ms 75984 KB Output is correct
47 Correct 645 ms 75728 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 0 ms 364 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 344 KB Output is correct
52 Correct 1 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 1077 ms 100096 KB Output is correct
56 Correct 1 ms 344 KB Output is correct
57 Correct 4 ms 1116 KB Output is correct
58 Correct 15 ms 3308 KB Output is correct
59 Correct 17 ms 2652 KB Output is correct
60 Correct 432 ms 49844 KB Output is correct
61 Correct 602 ms 70388 KB Output is correct
62 Correct 820 ms 83856 KB Output is correct
63 Correct 940 ms 101508 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 344 KB Output is correct
67 Correct 851 ms 101152 KB Output is correct
68 Correct 945 ms 100968 KB Output is correct
69 Correct 962 ms 100692 KB Output is correct
70 Correct 7 ms 1116 KB Output is correct
71 Correct 15 ms 2256 KB Output is correct
72 Correct 459 ms 51456 KB Output is correct
73 Correct 769 ms 77404 KB Output is correct
74 Correct 1102 ms 100720 KB Output is correct
75 Correct 960 ms 102772 KB Output is correct
76 Correct 917 ms 100820 KB Output is correct
77 Correct 7 ms 1624 KB Output is correct
78 Correct 15 ms 2396 KB Output is correct
79 Correct 430 ms 49980 KB Output is correct
80 Correct 787 ms 77192 KB Output is correct
81 Correct 1136 ms 101488 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 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 311 ms 50052 KB Output is correct
10 Correct 19 ms 5336 KB Output is correct
11 Correct 103 ms 26748 KB Output is correct
12 Correct 25 ms 7880 KB Output is correct
13 Correct 56 ms 13908 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 329 ms 51052 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 Execution timed out 3594 ms 85700 KB Time limit exceeded
21 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 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 311 ms 50052 KB Output is correct
10 Correct 19 ms 5336 KB Output is correct
11 Correct 103 ms 26748 KB Output is correct
12 Correct 25 ms 7880 KB Output is correct
13 Correct 56 ms 13908 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 329 ms 51052 KB Output is correct
17 Correct 879 ms 101964 KB Output is correct
18 Correct 855 ms 101376 KB Output is correct
19 Execution timed out 3517 ms 114384 KB Time limit exceeded
20 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 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 311 ms 50052 KB Output is correct
10 Correct 19 ms 5336 KB Output is correct
11 Correct 103 ms 26748 KB Output is correct
12 Correct 25 ms 7880 KB Output is correct
13 Correct 56 ms 13908 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 329 ms 51052 KB Output is correct
17 Correct 1 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 895 ms 101192 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 3 ms 944 KB Output is correct
26 Correct 4 ms 1116 KB Output is correct
27 Correct 6 ms 1420 KB Output is correct
28 Correct 291 ms 41376 KB Output is correct
29 Correct 478 ms 60508 KB Output is correct
30 Correct 660 ms 81548 KB Output is correct
31 Correct 924 ms 101200 KB Output is correct
32 Correct 0 ms 344 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 344 KB Output is correct
40 Correct 0 ms 344 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 4 ms 904 KB Output is correct
44 Correct 4 ms 1116 KB Output is correct
45 Correct 375 ms 50368 KB Output is correct
46 Correct 647 ms 75984 KB Output is correct
47 Correct 645 ms 75728 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 0 ms 364 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 344 KB Output is correct
52 Correct 1 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 1077 ms 100096 KB Output is correct
56 Correct 1 ms 344 KB Output is correct
57 Correct 4 ms 1116 KB Output is correct
58 Correct 15 ms 3308 KB Output is correct
59 Correct 17 ms 2652 KB Output is correct
60 Correct 432 ms 49844 KB Output is correct
61 Correct 602 ms 70388 KB Output is correct
62 Correct 820 ms 83856 KB Output is correct
63 Correct 940 ms 101508 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 344 KB Output is correct
67 Correct 851 ms 101152 KB Output is correct
68 Correct 945 ms 100968 KB Output is correct
69 Correct 962 ms 100692 KB Output is correct
70 Correct 7 ms 1116 KB Output is correct
71 Correct 15 ms 2256 KB Output is correct
72 Correct 459 ms 51456 KB Output is correct
73 Correct 769 ms 77404 KB Output is correct
74 Correct 1102 ms 100720 KB Output is correct
75 Correct 960 ms 102772 KB Output is correct
76 Correct 917 ms 100820 KB Output is correct
77 Correct 7 ms 1624 KB Output is correct
78 Correct 15 ms 2396 KB Output is correct
79 Correct 430 ms 49980 KB Output is correct
80 Correct 787 ms 77192 KB Output is correct
81 Correct 1136 ms 101488 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Execution timed out 3594 ms 85700 KB Time limit exceeded
86 Halted 0 ms 0 KB -