oj.uz

Submission #1021047

# Submission time Handle Problem Language Result Execution time Memory
1021047 2024-07-12T13:17:06 Z mdn2002 Fountain Parks (IOI21_parks) C++17
30 / 100
 1261 ms 89648 KB 
/*
Mayoeba Yabureru
*/
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
static vector<int> _u, _v, _a, _b;

int construct_roads(vector<int> x, vector<int> y) {
    int n = x.size();
    vector<vector<int>> gr(n + 1);
    x.insert(x.begin(), 0);
    y.insert(y.begin(), 0);
    map<pair<int, int>, int> mp;
    for (int i = 1; i <= n; i ++) mp[{x[i], y[i]}] = i;
    vector<int> u, v, a, b;

    map<pair<pair<int, int>, pair<int, int>>, int> connected;
    map<pair<int, int>, int> taken;
    for (int i = 1; i <= n; i ++) {
        if (x[i] == 2 && mp[{x[i], y[i] + 2}]) {
            connected[{{x[i], y[i]}, {x[i], y[i] + 2}}] = 1;
            u.push_back(i), v.push_back(mp[{x[i], y[i] + 2}]);
            a.push_back(x[i] - 1), b.push_back(y[i] + 1);
            taken[{x[i] - 1, y[i] + 1}] = 1;
            gr[i].push_back(mp[{x[i], y[i] + 2}]);
            gr[mp[{x[i], y[i] + 2}]].push_back(i);
        }
        else if (x[i] == 6 && mp[{x[i], y[i] + 2}]) {
            connected[{{x[i], y[i]}, {x[i], y[i] + 2}}] = 1;
            u.push_back(i), v.push_back(mp[{x[i], y[i] + 2}]);
            a.push_back(x[i] + 1), b.push_back(y[i] + 1);
            taken[{x[i] + 1, y[i] + 1}] = 1;
            gr[i].push_back(mp[{x[i], y[i] + 2}]);
            gr[mp[{x[i], y[i] + 2}]].push_back(i);
        }
        else if (x[i] == 4 && mp[{x[i], y[i] + 2}]) {
            connected[{{x[i], y[i]}, {x[i], y[i] + 2}}] = 1;
            u.push_back(i), v.push_back(mp[{x[i], y[i] + 2}]);

            if (y[i] % 4 == 2) a.push_back(x[i] + 1);
            else a.push_back(x[i] - 1);
            b.push_back(y[i] + 1);
            taken[{a.back(), b.back()}] = 1;

            gr[i].push_back(mp[{x[i], y[i] + 2}]);
            gr[mp[{x[i], y[i] + 2}]].push_back(i);
        }
    }
    for (int i = 1; i <= n; i ++) {
        if (x[i] == 2 && mp[{x[i] + 2, y[i]}]) {
            if (connected[{{x[i], y[i] - 2}, {x[i] + 2, y[i] - 2}}] == 1) continue;
            if (connected[{{x[i], y[i] + 2}, {x[i] + 2, y[i] + 2}}] == 1) continue;
            u.push_back(i), v.push_back(mp[{x[i] + 2, y[i]}]);
            if (taken[{x[i] + 1, y[i] + 1}] == 0) {
                a.push_back(x[i] + 1), b.push_back(y[i] + 1);
                taken[{x[i] + 1, y[i] + 1}] = 1;
            }
            else if (taken[{x[i] + 1, y[i] - 1}] == 0) {
                a.push_back(x[i] + 1), b.push_back(y[i] - 1);
                taken[{x[i] + 1, y[i] - 1}] = 1;
            }
            else assert(0);
            connected[{{x[i], y[i]}, {x[i] + 2, y[i]}}] = 1;

            gr[i].push_back(mp[{x[i] + 2, y[i]}]);
            gr[mp[{x[i] + 2, y[i]}]].push_back(i);
        }
        else if (x[i] == 6 && mp[{x[i] - 2, y[i]}]) {
            if (connected[{{x[i], y[i] - 2}, {x[i] - 2, y[i] - 2}}] == 1) continue;
            if (connected[{{x[i], y[i] + 2}, {x[i] - 2, y[i] + 2}}] == 1) continue;
            u.push_back(i), v.push_back(mp[{x[i] - 2, y[i]}]);
            if (taken[{x[i] - 1, y[i] + 1}] == 0) {
                a.push_back(x[i] - 1), b.push_back(y[i] + 1);
                taken[{x[i] - 1, y[i] + 1}] = 1;
            }
            else if (taken[{x[i] - 1, y[i] - 1}] == 0) {
                a.push_back(x[i] - 1), b.push_back(y[i] - 1);
                taken[{x[i] - 1, y[i] + 1}] = 1;
            }
            else assert(0);
            connected[{{x[i], y[i]}, {x[i] - 2, y[i]}}] = 1;

            gr[i].push_back(mp[{x[i] - 2, y[i]}]);
            gr[mp[{x[i] - 2, y[i]}]].push_back(i);
        }
    }
    for (int i = 0; i < u.size(); i ++) {
        u[i] --;
        v[i] --;
    }
    int num = 0;
    vector<int> vis(n + 1);
    function<void(int)> go = [&] (int x) {
        num ++;
        vis[x] = 1;
        for (auto u : gr[x]) {
            if (vis[u]) continue;
            go(u);
        }
    };
    go(1);

    if (num == n) {
        build(u, v, a, b);
        return 1;
    }
    return 0;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:88:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |     for (int i = 0; i < u.size(); i ++) {
      |                     ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 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 295 ms 44276 KB Output is correct
10 Correct 14 ms 4900 KB Output is correct
11 Correct 88 ms 24232 KB Output is correct
12 Correct 19 ms 7000 KB Output is correct
13 Correct 58 ms 17668 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 298 ms 41852 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 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 295 ms 44276 KB Output is correct
10 Correct 14 ms 4900 KB Output is correct
11 Correct 88 ms 24232 KB Output is correct
12 Correct 19 ms 7000 KB Output is correct
13 Correct 58 ms 17668 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 298 ms 41852 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 436 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 942 ms 86704 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 3 ms 860 KB Output is correct
26 Correct 5 ms 1372 KB Output is correct
27 Correct 7 ms 1680 KB Output is correct
28 Correct 256 ms 35352 KB Output is correct
29 Correct 465 ms 52628 KB Output is correct
30 Correct 710 ms 70252 KB Output is correct
31 Correct 944 ms 87468 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 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 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 3 ms 1160 KB Output is correct
44 Correct 5 ms 1372 KB Output is correct
45 Correct 411 ms 40508 KB Output is correct
46 Correct 618 ms 58916 KB Output is correct
47 Correct 674 ms 58592 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 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 295 ms 44276 KB Output is correct
10 Correct 14 ms 4900 KB Output is correct
11 Correct 88 ms 24232 KB Output is correct
12 Correct 19 ms 7000 KB Output is correct
13 Correct 58 ms 17668 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 298 ms 41852 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 436 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 942 ms 86704 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 3 ms 860 KB Output is correct
26 Correct 5 ms 1372 KB Output is correct
27 Correct 7 ms 1680 KB Output is correct
28 Correct 256 ms 35352 KB Output is correct
29 Correct 465 ms 52628 KB Output is correct
30 Correct 710 ms 70252 KB Output is correct
31 Correct 944 ms 87468 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 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 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 3 ms 1160 KB Output is correct
44 Correct 5 ms 1372 KB Output is correct
45 Correct 411 ms 40508 KB Output is correct
46 Correct 618 ms 58916 KB Output is correct
47 Correct 674 ms 58592 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 1 ms 436 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 1 ms 344 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 1162 ms 88000 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 3 ms 1268 KB Output is correct
58 Correct 19 ms 3148 KB Output is correct
59 Correct 33 ms 3924 KB Output is correct
60 Correct 397 ms 45440 KB Output is correct
61 Correct 601 ms 61548 KB Output is correct
62 Correct 824 ms 72716 KB Output is correct
63 Correct 1261 ms 89648 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 782 ms 79340 KB Output is correct
68 Correct 740 ms 79408 KB Output is correct
69 Correct 817 ms 80540 KB Output is correct
70 Correct 9 ms 1880 KB Output is correct
71 Correct 14 ms 3164 KB Output is correct
72 Correct 356 ms 39960 KB Output is correct
73 Correct 599 ms 61216 KB Output is correct
74 Correct 971 ms 79604 KB Output is correct
75 Correct 941 ms 88372 KB Output is correct
76 Correct 732 ms 82744 KB Output is correct
77 Correct 9 ms 2136 KB Output is correct
78 Correct 16 ms 3676 KB Output is correct
79 Correct 351 ms 41588 KB Output is correct
80 Correct 645 ms 62396 KB Output is correct
81 Correct 981 ms 83248 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 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 295 ms 44276 KB Output is correct
10 Correct 14 ms 4900 KB Output is correct
11 Correct 88 ms 24232 KB Output is correct
12 Correct 19 ms 7000 KB Output is correct
13 Correct 58 ms 17668 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 298 ms 41852 KB Output is correct
17 Incorrect 1 ms 344 KB Solution announced impossible, but it is possible.
18 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 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 295 ms 44276 KB Output is correct
10 Correct 14 ms 4900 KB Output is correct
11 Correct 88 ms 24232 KB Output is correct
12 Correct 19 ms 7000 KB Output is correct
13 Correct 58 ms 17668 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 298 ms 41852 KB Output is correct
17 Incorrect 216 ms 33176 KB Solution announced impossible, but it is possible.
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 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 295 ms 44276 KB Output is correct
10 Correct 14 ms 4900 KB Output is correct
11 Correct 88 ms 24232 KB Output is correct
12 Correct 19 ms 7000 KB Output is correct
13 Correct 58 ms 17668 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 298 ms 41852 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 436 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 942 ms 86704 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 3 ms 860 KB Output is correct
26 Correct 5 ms 1372 KB Output is correct
27 Correct 7 ms 1680 KB Output is correct
28 Correct 256 ms 35352 KB Output is correct
29 Correct 465 ms 52628 KB Output is correct
30 Correct 710 ms 70252 KB Output is correct
31 Correct 944 ms 87468 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 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 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 3 ms 1160 KB Output is correct
44 Correct 5 ms 1372 KB Output is correct
45 Correct 411 ms 40508 KB Output is correct
46 Correct 618 ms 58916 KB Output is correct
47 Correct 674 ms 58592 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 1 ms 436 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 1 ms 344 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 1162 ms 88000 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 3 ms 1268 KB Output is correct
58 Correct 19 ms 3148 KB Output is correct
59 Correct 33 ms 3924 KB Output is correct
60 Correct 397 ms 45440 KB Output is correct
61 Correct 601 ms 61548 KB Output is correct
62 Correct 824 ms 72716 KB Output is correct
63 Correct 1261 ms 89648 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 782 ms 79340 KB Output is correct
68 Correct 740 ms 79408 KB Output is correct
69 Correct 817 ms 80540 KB Output is correct
70 Correct 9 ms 1880 KB Output is correct
71 Correct 14 ms 3164 KB Output is correct
72 Correct 356 ms 39960 KB Output is correct
73 Correct 599 ms 61216 KB Output is correct
74 Correct 971 ms 79604 KB Output is correct
75 Correct 941 ms 88372 KB Output is correct
76 Correct 732 ms 82744 KB Output is correct
77 Correct 9 ms 2136 KB Output is correct
78 Correct 16 ms 3676 KB Output is correct
79 Correct 351 ms 41588 KB Output is correct
80 Correct 645 ms 62396 KB Output is correct
81 Correct 981 ms 83248 KB Output is correct
82 Incorrect 1 ms 344 KB Solution announced impossible, but it is possible.
83 Halted 0 ms 0 KB -