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답안 #609671

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
609671 2022-07-27T19:05:29 Z Mher Jail (JOI22_jail) C++14
72 / 100
 5000 ms 851420 KB 
#include <bits/stdc++.h>

using namespace std;

const int inf = 1e9 + 7;

int n, m;
vector<vector<int>> g, p;
vector<int> tin, tout;
vector<int> s, f;
vector<int> col;
vector<int> parent;
vector<int> st, ft;
int cnt = 0;

void dfs(int v, int pr)
{
    tin[v] = cnt++;
    parent[v] = pr;
    for (int to : g[v])
    {
        if (to == pr)
            continue;

        dfs(to, v);
    }
    tout[v] = cnt;
}

bool child(int a, int b)
{
    return tin[a] <= tin[b] && tout[a] >= tout[b];
}

void build(int v)
{
    //cout << v << endl;
    int pnt = s[v];
    while (!child(pnt, f[v]))
    {
        //cout << '-' << pnt << endl;
        if (st[pnt] >= 0)
        {
            p[v].push_back(st[pnt]);
        }
        if (ft[pnt] >= 0)
        {
            p[ft[pnt]].push_back(v);
        }
        pnt = parent[pnt];
    }
    pnt = f[v];
    while (!child(pnt, s[v]))
    {
        //cout << '-' << pnt << endl;
        if (st[pnt] >= 0)
        {
            p[v].push_back(st[pnt]);
        }
        if (ft[pnt] >= 0)
        {
            p[ft[pnt]].push_back(v);
        }
        pnt = parent[pnt];
    }
    if (st[pnt] >= 0)
    {
        p[v].push_back(st[pnt]);
    }
    if (ft[pnt] >= 0)
    {
        p[ft[pnt]].push_back(v);
    }
}

bool cicle(int v)
{
    col[v] = 1;
    bool ans = true;
    for (int to : p[v])
    {
        if (to == v)
            continue;
        if (col[to] == 1)
            return false;
        if (col[to] == 0)
            ans &= cicle(to);
    }
    col[v] = 2;
    return ans;
}

void solve()
{
    cin >> n;
    g.resize(n + 1);
    for (int i = 1; i < n; i++)
    {
        int a, b;
        cin >> a >> b;
        g[a].push_back(b);
        g[b].push_back(a);
    }
    cin >> m;
    p.resize(m);
    s.resize(m);
    f.resize(m);
    st.resize(n + 1, -1);
    ft.resize(n + 1, -1);
    for (int i = 0; i < m; i++)
    {
        cin >> s[i] >> f[i];
        st[s[i]] = i;
        ft[f[i]] = i;
    }
    tin.resize(n + 1);
    tout.resize(n + 1);
    parent.resize(n + 1);
    dfs(1, 0);
    col.resize(m, 0);
    for (int i = 0; i < m; i++)
    {
        build(i);
    }
    bool ans = true;
    for (int i = 0; i < m; i++)
    {
        if (col[i] == 0)
            ans &= cicle(i);
    }
    cout << (ans ? "Yes" : "No") << endl;
    g.clear();
    p.clear();
    tin.clear();
    tout.clear();
    s.clear();
    f.clear();
    col.clear();
    parent.clear();
    st.clear();
    ft.clear();
}

int main()
{
    int q;
    cin >> q;
    while (q--)
        solve();
    return 0;
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 24 ms 212 KB Output is correct
5 Correct 52 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 6 ms 340 KB Output is correct
9 Correct 157 ms 2320 KB Output is correct
10 Correct 260 ms 16200 KB Output is correct
11 Correct 13 ms 212 KB Output is correct
12 Correct 83 ms 396 KB Output is correct
13 Correct 227 ms 46816 KB Output is correct
14 Correct 221 ms 60692 KB Output is correct
15 Execution timed out 5094 ms 851420 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Correct 3 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 2 ms 212 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Correct 3 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 2 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 212 KB Output is correct
17 Correct 3 ms 212 KB Output is correct
18 Correct 3 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 4 ms 212 KB Output is correct
21 Correct 3 ms 212 KB Output is correct
22 Correct 4 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 3 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 2 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Correct 3 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 2 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 212 KB Output is correct
17 Correct 3 ms 212 KB Output is correct
18 Correct 3 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 4 ms 212 KB Output is correct
21 Correct 3 ms 212 KB Output is correct
22 Correct 4 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 3 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 2 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 5 ms 340 KB Output is correct
30 Correct 4 ms 212 KB Output is correct
31 Correct 4 ms 340 KB Output is correct
32 Correct 3 ms 212 KB Output is correct
33 Correct 4 ms 212 KB Output is correct
34 Correct 3 ms 212 KB Output is correct
35 Correct 5 ms 340 KB Output is correct
36 Correct 3 ms 340 KB Output is correct
37 Correct 2 ms 212 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Correct 3 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 2 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 212 KB Output is correct
17 Correct 3 ms 212 KB Output is correct
18 Correct 3 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 4 ms 212 KB Output is correct
21 Correct 3 ms 212 KB Output is correct
22 Correct 4 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 3 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 2 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 5 ms 340 KB Output is correct
30 Correct 4 ms 212 KB Output is correct
31 Correct 4 ms 340 KB Output is correct
32 Correct 3 ms 212 KB Output is correct
33 Correct 4 ms 212 KB Output is correct
34 Correct 3 ms 212 KB Output is correct
35 Correct 5 ms 340 KB Output is correct
36 Correct 3 ms 340 KB Output is correct
37 Correct 2 ms 212 KB Output is correct
38 Correct 133 ms 2364 KB Output is correct
39 Correct 260 ms 16124 KB Output is correct
40 Correct 94 ms 1348 KB Output is correct
41 Correct 68 ms 724 KB Output is correct
42 Correct 86 ms 1492 KB Output is correct
43 Correct 86 ms 852 KB Output is correct
44 Correct 18 ms 456 KB Output is correct
45 Correct 84 ms 9208 KB Output is correct
46 Correct 88 ms 9212 KB Output is correct
47 Correct 104 ms 12176 KB Output is correct
48 Correct 118 ms 11992 KB Output is correct
49 Correct 92 ms 9400 KB Output is correct
50 Correct 86 ms 9420 KB Output is correct
51 Correct 81 ms 10100 KB Output is correct
52 Correct 80 ms 10152 KB Output is correct
53 Correct 29 ms 952 KB Output is correct
54 Correct 117 ms 9212 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 14 ms 212 KB Output is correct
6 Correct 2 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 3 ms 212 KB Output is correct
13 Correct 47 ms 212 KB Output is correct
14 Correct 77 ms 292 KB Output is correct
15 Correct 76 ms 212 KB Output is correct
16 Correct 101 ms 10140 KB Output is correct
17 Correct 180 ms 17688 KB Output is correct
18 Correct 415 ms 39636 KB Output is correct
19 Correct 114 ms 10812 KB Output is correct
20 Correct 107 ms 10700 KB Output is correct
21 Correct 105 ms 10808 KB Output is correct
22 Correct 180 ms 18288 KB Output is correct
23 Correct 152 ms 18128 KB Output is correct
24 Correct 150 ms 18316 KB Output is correct
25 Correct 149 ms 18664 KB Output is correct
26 Correct 182 ms 18592 KB Output is correct
27 Correct 211 ms 21952 KB Output is correct
28 Correct 185 ms 23220 KB Output is correct
29 Correct 186 ms 20348 KB Output is correct
30 Correct 136 ms 15768 KB Output is correct
31 Correct 164 ms 16188 KB Output is correct
32 Correct 148 ms 15572 KB Output is correct
33 Correct 137 ms 16184 KB Output is correct

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 24 ms 212 KB Output is correct
5 Correct 52 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 6 ms 340 KB Output is correct
9 Correct 157 ms 2320 KB Output is correct
10 Correct 260 ms 16200 KB Output is correct
11 Correct 13 ms 212 KB Output is correct
12 Correct 83 ms 396 KB Output is correct
13 Correct 227 ms 46816 KB Output is correct
14 Correct 221 ms 60692 KB Output is correct
15 Execution timed out 5094 ms 851420 KB Time limit exceeded
16 Halted 0 ms 0 KB -