oj.uz

답안 #845918

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
845918 2023-09-06T19:27:30 Z tibinyte 봉쇄 시간 (IOI23_closing) C++17
51 / 100
 1000 ms 1612716 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll inf = 1e18 + 1;
int max_score(int n, int x, int y, ll k, vector<int> u, vector<int> v, vector<int> w)
{
    x++;
    y++;
    vector<vector<pair<int, int>>> g(n + 1);
    for (int i = 0; i < n - 1; ++i)
    {
        u[i]++;
        v[i]++;
        g[u[i]].push_back({v[i], w[i]});
        g[v[i]].push_back({u[i], w[i]});
    }
    vector<vector<ll>> cost(n + 1, vector<ll>(2));
    function<void(int, int, int)> compute_cost = [&](int node, int parent, int qui)
    {
        for (auto i : g[node])
        {
            if (i.first != parent)
            {
                cost[i.first][qui] = cost[node][qui] + i.second;
                compute_cost(i.first, node, qui);
            }
        }
    };
    compute_cost(x, 0, 0);
    compute_cost(y, 0, 1);

    function<int()> greedy = [&]()
    {
        set<tuple<ll, int, int>> accesibile;
        vector<vector<int>> viz(n + 1, vector<int>(2));
        accesibile.insert({0, x, 0});
        accesibile.insert({0, y, 1});
        int ans = 0;
        ll left = k;
        while (!accesibile.empty())
        {
            int adam, qui, byqui;
            tie(adam, qui, byqui) = *accesibile.begin();
            accesibile.erase(accesibile.begin());
            if (adam > left)
            {
                break;
            }
            left -= adam;
            ans++;
            viz[qui][byqui] = true;
            for (auto i : g[qui])
            {
                if (!viz[i.first][byqui])
                {
                    accesibile.insert({cost[i.first][byqui], i.first, byqui});
                }
            }
        }
        return ans;
    };

    function<int(int)> solve_root = [&](int root)
    {
        vector<vector<vector<ll>>> dp(n + 1, vector<vector<ll>>(n + n + 1, vector<ll>(3, inf)));
        vector<bool> important(n + 1);
        vector<int> sz(n + 1);
        function<void(int, int)> dfs_important = [&](int node, int parent)
        {
            if (node == x || node == y)
            {
                important[node] = true;
            }
            for (auto i : g[node])
            {
                if (i.first != parent)
                {
                    dfs_important(i.first, node);
                }
            }
            for (auto i : g[node])
            {
                if (i.first != parent)
                {
                    important[node] = important[node] || important[i.first];
                }
            }
        };
        dfs_important(root, 0);
        vector<ll> merged(n + n + 1, inf);
        function<void(int, int)> dfs = [&](int node, int parent)
        {
            dp[node][1][0] = cost[node][0];
            dp[node][1][1] = cost[node][1];
            dp[node][2][2] = max(cost[node][0], cost[node][1]);
            sz[node] = 1;

            if (node == x)
            {
                dp[node][1][1] = inf;
            }
            if (node == y)
            {
                dp[node][1][0] = inf;
            }
            for (auto i : g[node])
            {
                if (i.first != parent)
                {
                    dfs(i.first, node);
                    int maxleft = sz[node] + sz[node];
                    int maxright = sz[i.first] + sz[i.first];
                    for (int i = 0; i <= maxleft + maxright; ++i)
                    {
                        merged[i] = inf;
                    }
                    for (int color = 0; color <= 2; ++color)
                    {
                        for (int color2 = 0; color2 <= 2; ++color2)
                        {
                            if (color != color2 && color != 2)
                            {
                                continue;
                            }
                            for (int cntleft = 1; cntleft <= maxleft; ++cntleft)
                            {
                                if (dp[node][cntleft][color] > k)
                                {
                                    continue;
                                }
                                for (int cntright = 1; cntright <= maxright; ++cntright)
                                {
                                    merged[cntleft + cntright] = min(merged[cntleft + cntright], dp[node][cntleft][color] + dp[i.first][cntright][color2]);
                                }
                            }
                        }
                        for (int cnt = 1; cnt <= maxleft + maxright; ++cnt)
                        {
                            if (important[i.first])
                            {
                                dp[node][cnt][color] = merged[cnt];
                            }
                            else
                            {
                                dp[node][cnt][color] = min(dp[node][cnt][color], merged[cnt]);
                            }
                        }
                    }
                    sz[node] += sz[i.first];
                }
            }
        };
        dfs(root, 0);
        for (int i = n + n; i >= 1; --i)
        {
            if (dp[root][i][2] <= k)
            {
                return i;
            }
        }
        return 0;
    };
    int ans = greedy();
    ll mini = inf;
    int qui = 0;
    for (int i = 1; i <= n; ++i)
    {
        ll val = abs(cost[i][0] - cost[i][1]);
        if (val < mini)
        {
            mini = val;
            qui = i;
        }
        else
        {
            if (val == mini && cost[i][0] < cost[qui][0])
            {
                qui = i;
            }
        }
    }
    ans = max(ans, solve_root(qui));
    return ans;
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct

Subtask #1
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1119 ms 1612716 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 848 KB Output is correct
11 Correct 1 ms 604 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 848 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 2 ms 1372 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 1368 KB Output is correct
15 Correct 1 ms 1372 KB Output is correct
16 Correct 2 ms 1368 KB Output is correct
17 Correct 2 ms 1380 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 34 ms 27992 KB Output is correct
20 Correct 24 ms 23392 KB Output is correct
21 Correct 28 ms 25608 KB Output is correct
22 Correct 33 ms 27904 KB Output is correct
23 Correct 35 ms 27996 KB Output is correct
24 Correct 30 ms 27996 KB Output is correct

Subtask #4
0.0 / 14.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 848 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 2 ms 1372 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 1368 KB Output is correct
15 Correct 1 ms 1372 KB Output is correct
16 Correct 2 ms 1368 KB Output is correct
17 Correct 2 ms 1380 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 34 ms 27992 KB Output is correct
20 Correct 24 ms 23392 KB Output is correct
21 Correct 28 ms 25608 KB Output is correct
22 Correct 33 ms 27904 KB Output is correct
23 Correct 35 ms 27996 KB Output is correct
24 Correct 30 ms 27996 KB Output is correct
25 Correct 13 ms 772 KB Output is correct
26 Execution timed out 1128 ms 998220 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #5
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 436 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 436 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 440 KB Output is correct
14 Correct 1 ms 440 KB Output is correct
15 Correct 0 ms 352 KB Output is correct
16 Correct 0 ms 436 KB Output is correct
17 Correct 0 ms 612 KB Output is correct
18 Correct 1 ms 440 KB Output is correct
19 Correct 1 ms 356 KB Output is correct
20 Correct 0 ms 352 KB Output is correct
21 Correct 1 ms 352 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 512 KB Output is correct
24 Correct 0 ms 348 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 848 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 1 ms 1368 KB Output is correct
16 Correct 1 ms 1372 KB Output is correct
17 Correct 2 ms 1368 KB Output is correct
18 Correct 2 ms 1380 KB Output is correct
19 Correct 0 ms 436 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 436 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 440 KB Output is correct
26 Correct 1 ms 440 KB Output is correct
27 Correct 0 ms 352 KB Output is correct
28 Correct 0 ms 436 KB Output is correct
29 Correct 0 ms 612 KB Output is correct
30 Correct 1 ms 440 KB Output is correct
31 Correct 1 ms 356 KB Output is correct
32 Correct 0 ms 352 KB Output is correct
33 Correct 1 ms 352 KB Output is correct
34 Correct 1 ms 344 KB Output is correct
35 Correct 1 ms 512 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 600 KB Output is correct
39 Correct 2 ms 1372 KB Output is correct
40 Correct 2 ms 1480 KB Output is correct
41 Correct 1 ms 1372 KB Output is correct
42 Correct 1 ms 1372 KB Output is correct
43 Correct 1 ms 1372 KB Output is correct
44 Correct 2 ms 1372 KB Output is correct
45 Correct 2 ms 1372 KB Output is correct
46 Correct 2 ms 1368 KB Output is correct
47 Correct 2 ms 1372 KB Output is correct
48 Correct 1 ms 1056 KB Output is correct
49 Correct 1 ms 604 KB Output is correct
50 Correct 1 ms 348 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 848 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 1 ms 1368 KB Output is correct
16 Correct 1 ms 1372 KB Output is correct
17 Correct 2 ms 1368 KB Output is correct
18 Correct 2 ms 1380 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 34 ms 27992 KB Output is correct
21 Correct 24 ms 23392 KB Output is correct
22 Correct 28 ms 25608 KB Output is correct
23 Correct 33 ms 27904 KB Output is correct
24 Correct 35 ms 27996 KB Output is correct
25 Correct 30 ms 27996 KB Output is correct
26 Correct 0 ms 436 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 436 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 440 KB Output is correct
33 Correct 1 ms 440 KB Output is correct
34 Correct 0 ms 352 KB Output is correct
35 Correct 0 ms 436 KB Output is correct
36 Correct 0 ms 612 KB Output is correct
37 Correct 1 ms 440 KB Output is correct
38 Correct 1 ms 356 KB Output is correct
39 Correct 0 ms 352 KB Output is correct
40 Correct 1 ms 352 KB Output is correct
41 Correct 1 ms 344 KB Output is correct
42 Correct 1 ms 512 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 600 KB Output is correct
46 Correct 2 ms 1372 KB Output is correct
47 Correct 2 ms 1480 KB Output is correct
48 Correct 1 ms 1372 KB Output is correct
49 Correct 1 ms 1372 KB Output is correct
50 Correct 1 ms 1372 KB Output is correct
51 Correct 2 ms 1372 KB Output is correct
52 Correct 2 ms 1372 KB Output is correct
53 Correct 2 ms 1368 KB Output is correct
54 Correct 2 ms 1372 KB Output is correct
55 Correct 1 ms 1056 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 2 ms 348 KB Output is correct
59 Correct 4 ms 1372 KB Output is correct
60 Correct 5 ms 1372 KB Output is correct
61 Correct 6 ms 2908 KB Output is correct
62 Correct 6 ms 2744 KB Output is correct
63 Correct 29 ms 27996 KB Output is correct
64 Correct 25 ms 24412 KB Output is correct
65 Correct 23 ms 23048 KB Output is correct
66 Correct 29 ms 24752 KB Output is correct
67 Correct 27 ms 27484 KB Output is correct
68 Correct 23 ms 23248 KB Output is correct
69 Correct 29 ms 27484 KB Output is correct
70 Correct 26 ms 25692 KB Output is correct
71 Correct 25 ms 25180 KB Output is correct
72 Correct 27 ms 26216 KB Output is correct
73 Correct 19 ms 17244 KB Output is correct
74 Correct 19 ms 19128 KB Output is correct
75 Correct 4 ms 1460 KB Output is correct

Subtask #8
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 848 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 1 ms 1368 KB Output is correct
16 Correct 1 ms 1372 KB Output is correct
17 Correct 2 ms 1368 KB Output is correct
18 Correct 2 ms 1380 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 34 ms 27992 KB Output is correct
21 Correct 24 ms 23392 KB Output is correct
22 Correct 28 ms 25608 KB Output is correct
23 Correct 33 ms 27904 KB Output is correct
24 Correct 35 ms 27996 KB Output is correct
25 Correct 30 ms 27996 KB Output is correct
26 Correct 13 ms 772 KB Output is correct
27 Execution timed out 1128 ms 998220 KB Time limit exceeded
28 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 848 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 1 ms 1368 KB Output is correct
16 Correct 1 ms 1372 KB Output is correct
17 Correct 2 ms 1368 KB Output is correct
18 Correct 2 ms 1380 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 34 ms 27992 KB Output is correct
21 Correct 24 ms 23392 KB Output is correct
22 Correct 28 ms 25608 KB Output is correct
23 Correct 33 ms 27904 KB Output is correct
24 Correct 35 ms 27996 KB Output is correct
25 Correct 30 ms 27996 KB Output is correct
26 Correct 13 ms 772 KB Output is correct
27 Execution timed out 1128 ms 998220 KB Time limit exceeded
28 Halted 0 ms 0 KB -