oj.uz

Submission #826257

# Submission time Handle Problem Language Result Execution time Memory
826257 2023-08-15T11:35:39 Z loctildore Fountain Parks (IOI21_parks) C++17
25 / 100
 573 ms 69392 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
// trans rights
#define ll long long
#define f first
#define s second
#define endl '\n'
#define all(x) begin(x), end(x)
int n;
vector<int> u, v, a, b;
map<pair<int, int>, int> mp;
set<pair<int, int>> done;

vector<pair<int, int>> dirs = {{0, 2}, {2, 0}, {0, -2}, {-2, 0}};
vector<pair<int, int>> bloc[2] = {{{-1, 1}, {1, 1}, {1, -1}, {-1, -1}}, {{1, 1}, {1, -1}, {-1, -1}, {-1, 1}}};

void dfs(int x, int y, int ldir = 0) {
    done.insert({x, y});
    for (int i = 0; i < 4; i++) {
        int ndir = (ldir + 3 + i) % 4;
        int nx = x + dirs[ndir].f;
        int ny = y + dirs[ndir].s;
        if (mp.find({nx, ny}) == mp.end()) continue;
        if (done.find({nx, ny}) != done.end()) continue;

        int tx = x + bloc[0][ndir].f;
        int ty = y + bloc[0][ndir].s;
        if (done.find({tx, ty}) == done.end()) {
            u.push_back(mp[{x, y}]);
            v.push_back(mp[{nx, ny}]);
            done.insert({tx, ty});
            a.push_back(tx);
            b.push_back(ty);
            dfs(nx, ny, ndir);
            continue;
        }

        tx = x + bloc[1][ndir].f;
        ty = y + bloc[1][ndir].s;
        if (done.find({tx, ty}) == done.end()) {
            u.push_back(mp[{x, y}]);
            v.push_back(mp[{nx, ny}]);
            done.insert({tx, ty});
            a.push_back(tx);
            b.push_back(ty);
            dfs(nx, ny, ndir);
        }
    }
}

int construct_roads(vector<int> xs, vector<int> ys) {
    srand(6969);
    n = xs.size();
    for (int i = 0; i < n; i++) {
        mp[{xs[i], ys[i]}] = i;
    }
    for (int tst = 0; tst < 7; tst++) {
        if (tst == 0) dfs(xs[0], ys[0]);
        else dfs(xs[rand() % n], ys[rand() % n]);
        if (u.size() == n - 1) {
            build(u, v, a, b);
            return 1;
        }
        done.clear();
        u.clear();
        v.clear();
        a.clear();
        b.clear();
    }
    return 0;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:61:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   61 |         if (u.size() == n - 1) {
      |             ~~~~~~~~~^~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 276 KB Output is correct
6 Correct 1 ms 244 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 169 ms 33660 KB Output is correct
10 Correct 18 ms 3924 KB Output is correct
11 Correct 97 ms 18836 KB Output is correct
12 Correct 22 ms 5636 KB Output is correct
13 Correct 228 ms 10764 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 198 ms 28580 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 276 KB Output is correct
6 Correct 1 ms 244 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 169 ms 33660 KB Output is correct
10 Correct 18 ms 3924 KB Output is correct
11 Correct 97 ms 18836 KB Output is correct
12 Correct 22 ms 5636 KB Output is correct
13 Correct 228 ms 10764 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 198 ms 28580 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 300 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 443 ms 66392 KB Output is correct
24 Correct 1 ms 256 KB Output is correct
25 Correct 3 ms 724 KB Output is correct
26 Correct 11 ms 900 KB Output is correct
27 Correct 6 ms 724 KB Output is correct
28 Correct 167 ms 27868 KB Output is correct
29 Correct 288 ms 41668 KB Output is correct
30 Correct 337 ms 55408 KB Output is correct
31 Correct 448 ms 64100 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Incorrect 0 ms 212 KB Pair u[0]=0 @(2, 4) and v[0]=0 @(2, 4) does not form a valid edge (distance != 2)
42 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 276 KB Output is correct
6 Correct 1 ms 244 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 169 ms 33660 KB Output is correct
10 Correct 18 ms 3924 KB Output is correct
11 Correct 97 ms 18836 KB Output is correct
12 Correct 22 ms 5636 KB Output is correct
13 Correct 228 ms 10764 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 198 ms 28580 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 300 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 443 ms 66392 KB Output is correct
24 Correct 1 ms 256 KB Output is correct
25 Correct 3 ms 724 KB Output is correct
26 Correct 11 ms 900 KB Output is correct
27 Correct 6 ms 724 KB Output is correct
28 Correct 167 ms 27868 KB Output is correct
29 Correct 288 ms 41668 KB Output is correct
30 Correct 337 ms 55408 KB Output is correct
31 Correct 448 ms 64100 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Incorrect 0 ms 212 KB Pair u[0]=0 @(2, 4) and v[0]=0 @(2, 4) does not form a valid edge (distance != 2)
42 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 276 KB Output is correct
6 Correct 1 ms 244 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 169 ms 33660 KB Output is correct
10 Correct 18 ms 3924 KB Output is correct
11 Correct 97 ms 18836 KB Output is correct
12 Correct 22 ms 5636 KB Output is correct
13 Correct 228 ms 10764 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 198 ms 28580 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 505 ms 69072 KB Output is correct
21 Correct 511 ms 64084 KB Output is correct
22 Correct 421 ms 61180 KB Output is correct
23 Correct 356 ms 51108 KB Output is correct
24 Correct 107 ms 15908 KB Output is correct
25 Correct 105 ms 15940 KB Output is correct
26 Correct 100 ms 15952 KB Output is correct
27 Correct 320 ms 44344 KB Output is correct
28 Correct 345 ms 44320 KB Output is correct
29 Correct 500 ms 44244 KB Output is correct
30 Correct 493 ms 44272 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 30 ms 4424 KB Output is correct
33 Correct 57 ms 8120 KB Output is correct
34 Correct 404 ms 64960 KB Output is correct
35 Correct 14 ms 1620 KB Output is correct
36 Correct 49 ms 5412 KB Output is correct
37 Correct 68 ms 9276 KB Output is correct
38 Correct 151 ms 18032 KB Output is correct
39 Correct 214 ms 24580 KB Output is correct
40 Correct 297 ms 31316 KB Output is correct
41 Correct 359 ms 38036 KB Output is correct
42 Correct 482 ms 44732 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Incorrect 0 ms 212 KB Pair u[0]=0 @(2, 4) and v[0]=0 @(2, 4) does not form a valid edge (distance != 2)
53 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 276 KB Output is correct
6 Correct 1 ms 244 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 169 ms 33660 KB Output is correct
10 Correct 18 ms 3924 KB Output is correct
11 Correct 97 ms 18836 KB Output is correct
12 Correct 22 ms 5636 KB Output is correct
13 Correct 228 ms 10764 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 198 ms 28580 KB Output is correct
17 Correct 465 ms 69212 KB Output is correct
18 Correct 403 ms 66776 KB Output is correct
19 Correct 427 ms 69392 KB Output is correct
20 Correct 573 ms 59640 KB Output is correct
21 Correct 399 ms 51060 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 53 ms 8392 KB Output is correct
24 Correct 51 ms 3804 KB Output is correct
25 Correct 55 ms 7880 KB Output is correct
26 Correct 92 ms 11876 KB Output is correct
27 Correct 226 ms 30224 KB Output is correct
28 Correct 297 ms 38108 KB Output is correct
29 Correct 340 ms 45980 KB Output is correct
30 Correct 430 ms 53148 KB Output is correct
31 Correct 498 ms 60956 KB Output is correct
32 Correct 431 ms 64152 KB Output is correct
33 Correct 404 ms 69208 KB Output is correct
34 Correct 16 ms 1108 KB Output is correct
35 Correct 17 ms 1620 KB Output is correct
36 Correct 184 ms 27232 KB Output is correct
37 Correct 294 ms 41404 KB Output is correct
38 Correct 414 ms 55272 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 276 KB Output is correct
6 Correct 1 ms 244 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 169 ms 33660 KB Output is correct
10 Correct 18 ms 3924 KB Output is correct
11 Correct 97 ms 18836 KB Output is correct
12 Correct 22 ms 5636 KB Output is correct
13 Correct 228 ms 10764 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 198 ms 28580 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 300 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 443 ms 66392 KB Output is correct
24 Correct 1 ms 256 KB Output is correct
25 Correct 3 ms 724 KB Output is correct
26 Correct 11 ms 900 KB Output is correct
27 Correct 6 ms 724 KB Output is correct
28 Correct 167 ms 27868 KB Output is correct
29 Correct 288 ms 41668 KB Output is correct
30 Correct 337 ms 55408 KB Output is correct
31 Correct 448 ms 64100 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Incorrect 0 ms 212 KB Pair u[0]=0 @(2, 4) and v[0]=0 @(2, 4) does not form a valid edge (distance != 2)
42 Halted 0 ms 0 KB -