oj.uz

Submission #1053215

# Submission time Handle Problem Language Result Execution time Memory
1053215 2024-08-11T09:48:15 Z MercubytheFirst Fountain Parks (IOI21_parks) C++17
30 / 100
 346 ms 79028 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
template<typename T, size_t N>
std::ostream& operator<<(std::ostream& os, const std::array<T, N>& a);
template<typename T>
std::ostream& operator<<(std::ostream& os, const std::vector<T>& v);
template<typename T1, typename T2>
std::ostream& operator<<(std::ostream& os, const std::pair<T1, T2>& p);
template<typename T>
std::ostream& operator<<(std::ostream& os, const std::set<T>& s);
template<typename T, typename cmp>
std::ostream& operator<<(std::ostream& os, const std::set<T, cmp>& s);


struct Road
{
    pair<int, int> u, v, bench;
    int u_idx, v_idx, idx;
    int o;
    Road() {
        u = v = bench = {-1, -1};
        u_idx = v_idx = idx = o = -1;
    }
    Road(const pii& a, const pii& b, int a_idx, int b_idx, int j) : u(a), v(b), u_idx(a_idx), v_idx(b_idx), idx(j) {
        bench = {-1, -1};
        if(u > v) {
            swap(u, v);
            swap(u_idx, v_idx);
        }
        assert(u.first == v.first or u.second == v.second);
        if(u.first == v.first) { // vertical
            o = 0;
        }
        else { // horizontal
            o = 1;
        }
    }
    bool operator<(const Road& other) const {
        return make_pair(u, v) < make_pair(other.u, other.v);
    }
    friend ostream& operator<<(ostream& os, const Road& r) {
        os << r.u_idx << " -> " << r.v_idx << " : " << r.u << " --> " << r.v;
        return os;
    }
};

int construct_roads(vector<int> x, vector<int> y) {
    int n = x.size();
    // vector<pii> points(n);
    // for(int i = 0; i < n; ++i) {
    //     points[i] = {x[i], y[i]};
    // }
    vector<bool> vis(n);
    map<pair<int, int>, int> mp;
    for(int i = 0; i < n; ++i) {
        mp[{x[i], y[i]}] = i;
    }
    const int dx[] = {0, +2, 0, -2},
              dy[] = {+2, 0, -2, 0};
    vector<Road> roads;
    auto road_dfs = [&](auto&& dfs, int i, int j) -> void
    {
        const int idx = mp[{i, j}];
        if(vis[idx])  {
            return;
        }
        vis[idx] = true;
        for(int d = 0; d < 4; ++d) {
            const int ii = i + dx[d], jj = j + dy[d];
            auto it = mp.find({ii, jj});
            if(it != mp.end() and !vis[it->second]) {
                roads.push_back(Road({i,j}, {ii,jj}, idx, it->second, roads.size()));
                dfs(dfs, ii, jj);
            }
        }
    };
    road_dfs(road_dfs, x[0], y[0]);
    assert((int)roads.size() < n);
    if((int)roads.size() != n - 1) {
        return 0;
    }
    sort(roads.begin(), roads.end());
    map<pair<int, int>, int> taken;
    for(int i = 0; i < (int)roads.size(); ++i) {
        const Road& r = roads[i];
        array<int, 2> co{(r.u.first + r.v.first)/2, (r.u.second + r.v.second) / 2};
        co[r.o] -= 1;
        if(!taken.count({co[0], co[1]})) {
            taken[{co[0], co[1]}] = true;
            roads[i].bench = {co[0], co[1]};
            continue;
        }
        co[r.o] += 2;
        if(!taken.count({co[0], co[1]})) {
            taken[{co[0], co[1]}] = true;
            roads[i].bench = {co[0], co[1]};
        }
        else assert(r.o);
        // else return 0;    // for(const auto& x : roads) {
    //     cout << x.u << " -> " << x.v << endl;
    // }
    }
    const int m = roads.size();
    vector<int> ansu(m), ansv(m), ansa(m), ansb(m);
    for(int i = 0; i < m; ++i) {
        ansu[roads[i].idx] = roads[i].u_idx;
        ansv[roads[i].idx] = roads[i].v_idx;
        ansa[roads[i].idx] = roads[i].bench.first;
        ansb[roads[i].idx] = roads[i].bench.second;
    }
    build(ansu, ansv, ansa, ansb);
    return 1;
}




template<typename T, size_t N>
std::ostream& operator<<(std::ostream& os, const std::array<T, N>& a) {
  os << "[";
  for(size_t i = 0; i + 1 < N; ++i) {
    os << a[i] << ", ";
  }
  if(N > 0)
    os << a[N - 1];
  os << "]";
  return os;
}
 
template<typename T1, typename T2>
std::ostream& operator<<(std::ostream& os, const std::pair<T1, T2>& p) {
  os << "(" << p.first << ", " << p.second << ") ";
  return os;
}
 
template<typename T>
std::ostream& operator<<(std::ostream& os, const std::vector<T>& v) {
  os << '[';
  for(auto x : v)
    os << x << ", ";
  os << "] ";
  return os;
}
 
template<typename T>
std::ostream& operator<<(std::ostream& os, const std::set<T>& s) {
  os << "{";
  for(auto x : s)
    os << x << ", ";
  os << "} ";
  return os;
}
//
template<typename T, typename cmp>
std::ostream& operator<<(std::ostream& os, const std::set<T, cmp>& s) {
  os << "{";
  for(auto x : s)
    os << x << ", ";
  os << "} ";
  return os;
}

/*
5
4 4
4 6
6 4
4 2
2 4

6
4 4
4 6
6 4
4 2
2 4
2 6

2
2 2
4 6
*/

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 0 ms 348 KB Output is correct
9 Correct 114 ms 37380 KB Output is correct
10 Correct 9 ms 4176 KB Output is correct
11 Correct 52 ms 20876 KB Output is correct
12 Correct 13 ms 5972 KB Output is correct
13 Correct 23 ms 9932 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 122 ms 30988 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 0 ms 348 KB Output is correct
9 Correct 114 ms 37380 KB Output is correct
10 Correct 9 ms 4176 KB Output is correct
11 Correct 52 ms 20876 KB Output is correct
12 Correct 13 ms 5972 KB Output is correct
13 Correct 23 ms 9932 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 122 ms 30988 KB Output is correct
17 Correct 1 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 290 ms 78208 KB Output is correct
24 Correct 0 ms 596 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 2 ms 860 KB Output is correct
28 Correct 88 ms 30980 KB Output is correct
29 Correct 146 ms 46268 KB Output is correct
30 Correct 205 ms 63408 KB Output is correct
31 Correct 292 ms 77104 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 380 KB Output is correct
40 Correct 1 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 1 ms 604 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 108 ms 33428 KB Output is correct
46 Correct 170 ms 49324 KB Output is correct
47 Correct 165 ms 47800 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 0 ms 348 KB Output is correct
9 Correct 114 ms 37380 KB Output is correct
10 Correct 9 ms 4176 KB Output is correct
11 Correct 52 ms 20876 KB Output is correct
12 Correct 13 ms 5972 KB Output is correct
13 Correct 23 ms 9932 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 122 ms 30988 KB Output is correct
17 Correct 1 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 290 ms 78208 KB Output is correct
24 Correct 0 ms 596 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 2 ms 860 KB Output is correct
28 Correct 88 ms 30980 KB Output is correct
29 Correct 146 ms 46268 KB Output is correct
30 Correct 205 ms 63408 KB Output is correct
31 Correct 292 ms 77104 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 380 KB Output is correct
40 Correct 1 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 1 ms 604 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 108 ms 33428 KB Output is correct
46 Correct 170 ms 49324 KB Output is correct
47 Correct 165 ms 47800 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 266 ms 75888 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 1116 KB Output is correct
58 Correct 7 ms 2472 KB Output is correct
59 Correct 3 ms 1628 KB Output is correct
60 Correct 125 ms 38960 KB Output is correct
61 Correct 192 ms 52148 KB Output is correct
62 Correct 210 ms 61732 KB Output is correct
63 Correct 270 ms 75696 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 266 ms 68800 KB Output is correct
68 Correct 264 ms 69604 KB Output is correct
69 Correct 248 ms 72116 KB Output is correct
70 Correct 2 ms 860 KB Output is correct
71 Correct 3 ms 1372 KB Output is correct
72 Correct 105 ms 28612 KB Output is correct
73 Correct 176 ms 46564 KB Output is correct
74 Correct 263 ms 56564 KB Output is correct
75 Correct 306 ms 72364 KB Output is correct
76 Correct 251 ms 78924 KB Output is correct
77 Correct 2 ms 1116 KB Output is correct
78 Correct 5 ms 1628 KB Output is correct
79 Correct 107 ms 30476 KB Output is correct
80 Correct 168 ms 45064 KB Output is correct
81 Correct 241 ms 60076 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 0 ms 348 KB Output is correct
9 Correct 114 ms 37380 KB Output is correct
10 Correct 9 ms 4176 KB Output is correct
11 Correct 52 ms 20876 KB Output is correct
12 Correct 13 ms 5972 KB Output is correct
13 Correct 23 ms 9932 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 122 ms 30988 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 308 ms 76604 KB Output is correct
21 Correct 279 ms 70524 KB Output is correct
22 Correct 330 ms 67504 KB Output is correct
23 Correct 204 ms 57268 KB Output is correct
24 Correct 85 ms 16112 KB Output is correct
25 Correct 88 ms 15952 KB Output is correct
26 Correct 82 ms 16208 KB Output is correct
27 Correct 242 ms 47540 KB Output is correct
28 Correct 250 ms 46816 KB Output is correct
29 Correct 346 ms 46116 KB Output is correct
30 Correct 306 ms 46768 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Incorrect 15 ms 4560 KB Tree (a[545], b[545]) = (-1, -1) is not adjacent to edge between u[545]=1239 @(185834, 20796) and v[545]=6716 @(185836, 20796)
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 0 ms 348 KB Output is correct
9 Correct 114 ms 37380 KB Output is correct
10 Correct 9 ms 4176 KB Output is correct
11 Correct 52 ms 20876 KB Output is correct
12 Correct 13 ms 5972 KB Output is correct
13 Correct 23 ms 9932 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 122 ms 30988 KB Output is correct
17 Correct 297 ms 77436 KB Output is correct
18 Correct 264 ms 65572 KB Output is correct
19 Incorrect 285 ms 79028 KB Tree (a[52388], b[52388]) = (-1, -1) is not adjacent to edge between u[52388]=155149 @(100000, 50002) and v[52388]=4025 @(100002, 50002)
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 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 114 ms 37380 KB Output is correct
10 Correct 9 ms 4176 KB Output is correct
11 Correct 52 ms 20876 KB Output is correct
12 Correct 13 ms 5972 KB Output is correct
13 Correct 23 ms 9932 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 122 ms 30988 KB Output is correct
17 Correct 1 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 290 ms 78208 KB Output is correct
24 Correct 0 ms 596 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 2 ms 860 KB Output is correct
28 Correct 88 ms 30980 KB Output is correct
29 Correct 146 ms 46268 KB Output is correct
30 Correct 205 ms 63408 KB Output is correct
31 Correct 292 ms 77104 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 380 KB Output is correct
40 Correct 1 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 1 ms 604 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 108 ms 33428 KB Output is correct
46 Correct 170 ms 49324 KB Output is correct
47 Correct 165 ms 47800 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 266 ms 75888 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 1116 KB Output is correct
58 Correct 7 ms 2472 KB Output is correct
59 Correct 3 ms 1628 KB Output is correct
60 Correct 125 ms 38960 KB Output is correct
61 Correct 192 ms 52148 KB Output is correct
62 Correct 210 ms 61732 KB Output is correct
63 Correct 270 ms 75696 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 266 ms 68800 KB Output is correct
68 Correct 264 ms 69604 KB Output is correct
69 Correct 248 ms 72116 KB Output is correct
70 Correct 2 ms 860 KB Output is correct
71 Correct 3 ms 1372 KB Output is correct
72 Correct 105 ms 28612 KB Output is correct
73 Correct 176 ms 46564 KB Output is correct
74 Correct 263 ms 56564 KB Output is correct
75 Correct 306 ms 72364 KB Output is correct
76 Correct 251 ms 78924 KB Output is correct
77 Correct 2 ms 1116 KB Output is correct
78 Correct 5 ms 1628 KB Output is correct
79 Correct 107 ms 30476 KB Output is correct
80 Correct 168 ms 45064 KB Output is correct
81 Correct 241 ms 60076 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 Correct 308 ms 76604 KB Output is correct
86 Correct 279 ms 70524 KB Output is correct
87 Correct 330 ms 67504 KB Output is correct
88 Correct 204 ms 57268 KB Output is correct
89 Correct 85 ms 16112 KB Output is correct
90 Correct 88 ms 15952 KB Output is correct
91 Correct 82 ms 16208 KB Output is correct
92 Correct 242 ms 47540 KB Output is correct
93 Correct 250 ms 46816 KB Output is correct
94 Correct 346 ms 46116 KB Output is correct
95 Correct 306 ms 46768 KB Output is correct
96 Correct 1 ms 348 KB Output is correct
97 Incorrect 15 ms 4560 KB Tree (a[545], b[545]) = (-1, -1) is not adjacent to edge between u[545]=1239 @(185834, 20796) and v[545]=6716 @(185836, 20796)
98 Halted 0 ms 0 KB -