oj.uz

Submission #1096944

# Submission time Handle Problem Language Result Execution time Memory
1096944 2024-10-05T14:01:22 Z abczz Fountain Parks (IOI21_parks) C++17
55 / 100
 1601 ms 131972 KB 
#include "parks.h"
#include <iostream>
#include <map>
#include <array>
#include <queue>
#define ll long long

using namespace std;

map <array<ll, 2>, ll> mp;
map <array<ll, 2>, ll> visited;
map <array<ll, 2>, ll> pt;
map <array<ll, 3>, ll> edge;
queue <array<ll, 2>> Q;
vector <int> U, V, A, B;
ll dj[4][2] = {-1, -1, -1, 1, 1, 1, 1, -1}, dk[4][2] = {-2, 0, 0, 2, 2, 0, 0, -2};

void dfs(ll u, ll v) {
    ++visited[{u, v}];
    for (int i=0; i<4; ++i) {
        ll nx = u + dk[i][0], ny = v + dk[i][1];
        if (pt.count({nx, ny}) && !visited.count({nx, ny})) dfs(nx, ny);
    }
}

void solve(ll u, ll v) {
    for (int i=0; i<4; ++i) {
        if (edge.count({u, v, i})) {
            U.push_back(pt[{u + dj[i][0], v + dj[i][1]}]);
            V.push_back(pt[{u + dj[(i+1)%4][0], v + dj[(i+1)%4][1]}]);
            A.push_back(u);
            B.push_back(v);
            edge.erase({u, v, i});
            edge.erase({u + dk[i][0], v + dk[i][1], i ^ 2});
            solve(u + dk[i][0], v + dk[i][1]);
            break;
        }
    }
}

int construct_roads(std::vector<int> x, std::vector<int> y) {
    ll n = x.size();
    for (int i=0; i<n; ++i) {
        pt[{x[i], y[i]}] = i;
        for (int j=0; j<4; ++j) {
            ll nx = x[i] + dj[j][0], ny = y[i] + dj[j][1];
            ++mp[{nx, ny}];
        }
    }
    dfs(x[0], y[0]);
    if (visited.size() != pt.size()) return 0;
    for (auto it = mp.begin(); it != mp.end();) {
        auto nx = next(it);
        auto [u, v] = it->first;
        ll tot = 0;
        for (int i=0; i<4; ++i) {
            if (pt.count({u + dj[i][0], v + dj[i][1]}) && pt.count({u + dj[(i+1)%4][0], v + dj[(i+1)%4][1]})) {
                ++tot;
                ++edge[{u, v, i}];
            }
        }
        mp[{u, v}] = tot;
        if (tot == 0) mp.erase(it);
        else if (tot == 1) Q.push({u, v});
        it = nx;
    }
    while (!Q.empty()) {
        auto [u, v] = Q.front();
        Q.pop();
        if (!mp.count({u, v})) continue;
        for (int i=0; i<4; ++i) {
            if (edge.count({u, v, i})) {
                U.push_back(pt[{u + dj[i][0], v + dj[i][1]}]);
                V.push_back(pt[{u + dj[(i+1)%4][0], v + dj[(i+1)%4][1]}]);
                edge.erase({u, v, i});
                edge.erase({u + dk[i][0], v + dk[i][1], i ^ 2});
                --mp[{u + dk[i][0], v + dk[i][1]}];
                if (mp[{u + dk[i][0], v + dk[i][1]}] == 1) Q.push({u + dk[i][0], v + dk[i][1]});
                else if (mp[{u + dk[i][0], v + dk[i][1]}] == 0) mp.erase({u + dk[i][0], v + dk[i][1]});
            }
        }
        mp.erase({u, v});
        A.push_back(u);
        B.push_back(v);
    }
    for (auto [y, z] : mp) {
        if (z == 4) return 0;
    }
    for (auto [y, z] : mp) {
        auto [u, v] = y;
        solve(u, v);
    }
    build(U, V, A, B);
    return 1;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 0 ms 512 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 452 ms 61372 KB Output is correct
10 Correct 33 ms 6496 KB Output is correct
11 Correct 241 ms 33756 KB Output is correct
12 Correct 62 ms 9528 KB Output is correct
13 Correct 66 ms 15700 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 2 ms 832 KB Output is correct
16 Correct 429 ms 55620 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 0 ms 512 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 452 ms 61372 KB Output is correct
10 Correct 33 ms 6496 KB Output is correct
11 Correct 241 ms 33756 KB Output is correct
12 Correct 62 ms 9528 KB Output is correct
13 Correct 66 ms 15700 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 2 ms 832 KB Output is correct
16 Correct 429 ms 55620 KB Output is correct
17 Correct 0 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 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1316 ms 131512 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 4 ms 1116 KB Output is correct
26 Correct 4 ms 1116 KB Output is correct
27 Correct 4 ms 1208 KB Output is correct
28 Correct 410 ms 54228 KB Output is correct
29 Correct 676 ms 81676 KB Output is correct
30 Correct 1012 ms 111612 KB Output is correct
31 Correct 1341 ms 128760 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 436 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 2 ms 860 KB Output is correct
44 Correct 3 ms 1020 KB Output is correct
45 Correct 515 ms 54800 KB Output is correct
46 Correct 817 ms 81044 KB Output is correct
47 Correct 735 ms 79536 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 0 ms 512 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 452 ms 61372 KB Output is correct
10 Correct 33 ms 6496 KB Output is correct
11 Correct 241 ms 33756 KB Output is correct
12 Correct 62 ms 9528 KB Output is correct
13 Correct 66 ms 15700 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 2 ms 832 KB Output is correct
16 Correct 429 ms 55620 KB Output is correct
17 Correct 0 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 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1316 ms 131512 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 4 ms 1116 KB Output is correct
26 Correct 4 ms 1116 KB Output is correct
27 Correct 4 ms 1208 KB Output is correct
28 Correct 410 ms 54228 KB Output is correct
29 Correct 676 ms 81676 KB Output is correct
30 Correct 1012 ms 111612 KB Output is correct
31 Correct 1341 ms 128760 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 436 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 2 ms 860 KB Output is correct
44 Correct 3 ms 1020 KB Output is correct
45 Correct 515 ms 54800 KB Output is correct
46 Correct 817 ms 81044 KB Output is correct
47 Correct 735 ms 79536 KB Output is correct
48 Correct 0 ms 344 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 Incorrect 1253 ms 131972 KB Tree @(3, 5) appears more than once: for edges on positions 133335 and 200001
56 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 0 ms 512 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 452 ms 61372 KB Output is correct
10 Correct 33 ms 6496 KB Output is correct
11 Correct 241 ms 33756 KB Output is correct
12 Correct 62 ms 9528 KB Output is correct
13 Correct 66 ms 15700 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 2 ms 832 KB Output is correct
16 Correct 429 ms 55620 KB Output is correct
17 Correct 0 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 1041 ms 120904 KB Output is correct
21 Correct 1051 ms 115076 KB Output is correct
22 Correct 1077 ms 111764 KB Output is correct
23 Correct 815 ms 99512 KB Output is correct
24 Correct 388 ms 67780 KB Output is correct
25 Correct 341 ms 42836 KB Output is correct
26 Correct 343 ms 42832 KB Output is correct
27 Correct 990 ms 99840 KB Output is correct
28 Correct 901 ms 99756 KB Output is correct
29 Correct 998 ms 98304 KB Output is correct
30 Correct 1108 ms 98640 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 59 ms 7876 KB Output is correct
33 Correct 139 ms 28172 KB Output is correct
34 Correct 1018 ms 116240 KB Output is correct
35 Correct 14 ms 2652 KB Output is correct
36 Correct 66 ms 10752 KB Output is correct
37 Correct 153 ms 20648 KB Output is correct
38 Correct 400 ms 36420 KB Output is correct
39 Correct 592 ms 49504 KB Output is correct
40 Correct 808 ms 63292 KB Output is correct
41 Correct 942 ms 76488 KB Output is correct
42 Correct 1123 ms 90948 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 344 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 344 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 3 ms 860 KB Output is correct
55 Correct 3 ms 1116 KB Output is correct
56 Correct 522 ms 54740 KB Output is correct
57 Correct 737 ms 81116 KB Output is correct
58 Correct 806 ms 79532 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 1098 ms 118288 KB Output is correct
63 Correct 1065 ms 118540 KB Output is correct
64 Correct 965 ms 120420 KB Output is correct
65 Correct 4 ms 1372 KB Output is correct
66 Correct 8 ms 2164 KB Output is correct
67 Correct 491 ms 50292 KB Output is correct
68 Correct 785 ms 79324 KB Output is correct
69 Correct 1260 ms 104472 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 0 ms 512 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 452 ms 61372 KB Output is correct
10 Correct 33 ms 6496 KB Output is correct
11 Correct 241 ms 33756 KB Output is correct
12 Correct 62 ms 9528 KB Output is correct
13 Correct 66 ms 15700 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 2 ms 832 KB Output is correct
16 Correct 429 ms 55620 KB Output is correct
17 Correct 1035 ms 127044 KB Output is correct
18 Correct 1018 ms 123788 KB Output is correct
19 Correct 1010 ms 118912 KB Output is correct
20 Correct 1028 ms 109240 KB Output is correct
21 Correct 961 ms 99960 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 138 ms 16080 KB Output is correct
24 Correct 30 ms 5460 KB Output is correct
25 Correct 92 ms 14928 KB Output is correct
26 Correct 176 ms 24152 KB Output is correct
27 Correct 580 ms 56420 KB Output is correct
28 Correct 781 ms 70232 KB Output is correct
29 Correct 920 ms 84948 KB Output is correct
30 Correct 1175 ms 98256 KB Output is correct
31 Correct 1601 ms 112672 KB Output is correct
32 Correct 1289 ms 121552 KB Output is correct
33 Correct 1053 ms 126196 KB Output is correct
34 Correct 7 ms 1728 KB Output is correct
35 Correct 10 ms 2676 KB Output is correct
36 Correct 532 ms 54548 KB Output is correct
37 Correct 921 ms 84096 KB Output is correct
38 Correct 1329 ms 110832 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 0 ms 512 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 452 ms 61372 KB Output is correct
10 Correct 33 ms 6496 KB Output is correct
11 Correct 241 ms 33756 KB Output is correct
12 Correct 62 ms 9528 KB Output is correct
13 Correct 66 ms 15700 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 2 ms 832 KB Output is correct
16 Correct 429 ms 55620 KB Output is correct
17 Correct 0 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 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1316 ms 131512 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 4 ms 1116 KB Output is correct
26 Correct 4 ms 1116 KB Output is correct
27 Correct 4 ms 1208 KB Output is correct
28 Correct 410 ms 54228 KB Output is correct
29 Correct 676 ms 81676 KB Output is correct
30 Correct 1012 ms 111612 KB Output is correct
31 Correct 1341 ms 128760 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 436 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 2 ms 860 KB Output is correct
44 Correct 3 ms 1020 KB Output is correct
45 Correct 515 ms 54800 KB Output is correct
46 Correct 817 ms 81044 KB Output is correct
47 Correct 735 ms 79536 KB Output is correct
48 Correct 0 ms 344 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 Incorrect 1253 ms 131972 KB Tree @(3, 5) appears more than once: for edges on positions 133335 and 200001
56 Halted 0 ms 0 KB -