oj.uz

답안 #631602

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
631602 2022-08-18T09:46:50 Z abc864197532 Jail (JOI22_jail) C++17
61 / 100
 5000 ms 34836 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long int
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define pii pair <int, int>
#define X first
#define Y second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
    cout << a << ' ', abc(b...);
}
template <typename T> void printv(T l, T r) {
    for (; l != r; ++l) cout << *l << " \n"[l + 1 == r];
}
template <typename A, typename B> istream& operator >> (istream& o, pair<A, B> &a) {
    return o >> a.X >> a.Y;
}
template <typename A, typename B> ostream& operator << (ostream& o, pair<A, B> a) {
    return o << '(' << a.X << ", " << a.Y << ')';
}
template <typename T> ostream& operator << (ostream& o, vector<T> a) {
    bool is = false;
    if (a.empty()) return o << "{}";
    for (T i : a) {o << (is ? ' ' : '{'), is = true, o << i;}
    return o << '}';
}
template <typename T> struct vv : vector <vector <T>> {
    vv (int n, int m, T v) : vector <vector <T>> (n, vector <T>(m, v)) {}
    vv (int n, int m) : vector <vector <T>> (n, vector <T>(m)) {}
    vv () {}
};
template <typename T> struct vvv : vector <vv <T>> {
    vvv (int n, int m, int k, T v) : vector <vv <T>> (n, vv <T>(m, k, v)) {}
    vvv (int n, int m, int k) : vector <vv <T>> (n, vv <T>(m, k)) {}
    vvv () {}
};
#ifdef Doludu
#define test(args...) abc("[" + string(#args) + "]", args)
#define owo freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#else
#define test(args...) void(0)
#define owo ios::sync_with_stdio(false); cin.tie(0)
#endif
const int mod = 1e9 + 7, N = 130002;

vector <int> adj[N];

struct BinaryLifting {
    // 0-index
    vector <int> in, out, dep;
    vector <vector <int>> jump;
    int _t, n, lg;
    BinaryLifting () = default;
    BinaryLifting (int _n) : n(_n) {
        lg = __lg(n) + 1, _t = 0;
        jump.assign(n, vector <int> (lg, -1));
        in.assign(n, 0), out.assign(n, 0), dep.assign(n, 0);
        dfs(0, -1);
    }
    void dfs(int v, int pa) {
        in[v] = _t++, jump[v][0] = pa;
        dep[v] = ~pa ? dep[pa] + 1 : 0;
        for (int i = 1; i < lg; ++i) {
            int k = jump[v][i - 1];
            jump[v][i] = ~k ? jump[k][i - 1] : k;
        }
        for (int u : adj[v]) if (u != pa) {
            dfs(u, v);
        }
        out[v] = _t++;
    }
    bool anc(int u, int v) {
        return in[u] <= in[v] && out[u] >= out[v];
    }
    int lca(int u, int v) {
        if (anc(u, v))
            return u;
        if (anc(v, u))
            return v;
        for (int i = lg - 1; ~i; --i) {
            int k = jump[u][i];
            if (~k && !anc(k, v))
                u = k;
        }
        return jump[u][0];
    }
    int lift(int u, int d) {
        for (int i = 0; i < lg; ++i) if (d >> i & 1)
            u = jump[u][i];
        return u;
    }
    int dis(int u, int v) {
        return dep[u] + dep[v] - dep[lca(u, v)] * 2;
    }
};

void solve() {
    int n, m;
    cin >> n;
    for (int i = 0, u, v; i < n - 1; ++i) {
        cin >> u >> v, --u, --v;
        adj[u].pb(v), adj[v].pb(u);
    }
    BinaryLifting solver(n);
    cin >> m;
    vector <int> u(m), v(m);
    for (int i = 0; i < m; ++i) {
        cin >> u[i] >> v[i], --u[i], --v[i];
    }
    vector <vector <int>> g(m);
    for (int i = 0; i < m; ++i) for (int j = 0; j < m; ++j) if (i ^ j) {
        // u[j] on (u[i], v[i]) => j -> i
        // v[j] on (u[i], v[i]) => i -> j
        int lca = solver.lca(u[i], v[i]);
        if (lca == u[j] || (solver.anc(lca, u[j]) && solver.anc(u[j], u[i])) || (solver.anc(lca, u[j]) && solver.anc(u[j], v[i]))) {
            g[i].pb(j);
        }
        if (lca == v[j] || (solver.anc(lca, v[j]) && solver.anc(v[j], u[i])) || (solver.anc(lca, v[j]) && solver.anc(v[j], v[i]))) {
            g[j].pb(i);
        }
    }
    vector <int> in(m);
    for (int i = 0; i < m; ++i) for (int j : g[i])
        in[j]++;
    queue <int> q;
    for (int i = 0; i < m; ++i) if (!in[i])
        q.push(i);
    int ans = 0;
    while (!q.empty()) {
        int v = q.front(); q.pop();
        ans++;
        for (int u : g[v]) {
            in[u]--;
            if (!in[u])
                q.push(u);
        }
    }
    cout << (ans == m ? "Yes\n" : "No\n");
    for (int i = 0; i < n; ++i)
        adj[i].clear();
}

int main () {
    owo;
    int t = 1;
    cin >> t;
    while (t--)
        solve();
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3284 KB Output is correct
2 Correct 2 ms 3284 KB Output is correct
3 Correct 2 ms 3284 KB Output is correct
4 Correct 12 ms 3524 KB Output is correct
5 Correct 24 ms 3516 KB Output is correct
6 Correct 3 ms 3412 KB Output is correct
7 Correct 3 ms 3540 KB Output is correct
8 Correct 7 ms 3412 KB Output is correct
9 Correct 90 ms 5656 KB Output is correct
10 Correct 67 ms 26700 KB Output is correct
11 Correct 9 ms 3284 KB Output is correct
12 Correct 76 ms 3484 KB Output is correct
13 Execution timed out 5093 ms 34836 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3284 KB Output is correct
2 Correct 2 ms 3284 KB Output is correct
3 Correct 3 ms 3412 KB Output is correct
4 Correct 3 ms 3284 KB Output is correct
5 Correct 3 ms 3412 KB Output is correct
6 Correct 3 ms 3284 KB Output is correct
7 Correct 3 ms 3412 KB Output is correct
8 Correct 3 ms 3284 KB Output is correct
9 Correct 3 ms 3284 KB Output is correct
10 Correct 3 ms 3284 KB Output is correct
11 Correct 3 ms 3412 KB Output is correct
12 Correct 2 ms 3284 KB Output is correct
13 Correct 2 ms 3284 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3284 KB Output is correct
2 Correct 2 ms 3284 KB Output is correct
3 Correct 3 ms 3412 KB Output is correct
4 Correct 3 ms 3284 KB Output is correct
5 Correct 3 ms 3412 KB Output is correct
6 Correct 3 ms 3284 KB Output is correct
7 Correct 3 ms 3412 KB Output is correct
8 Correct 3 ms 3284 KB Output is correct
9 Correct 3 ms 3284 KB Output is correct
10 Correct 3 ms 3284 KB Output is correct
11 Correct 3 ms 3412 KB Output is correct
12 Correct 2 ms 3284 KB Output is correct
13 Correct 2 ms 3284 KB Output is correct
14 Correct 2 ms 3252 KB Output is correct
15 Correct 2 ms 3284 KB Output is correct
16 Correct 3 ms 3284 KB Output is correct
17 Correct 3 ms 3412 KB Output is correct
18 Correct 3 ms 3284 KB Output is correct
19 Correct 2 ms 3284 KB Output is correct
20 Correct 3 ms 3284 KB Output is correct
21 Correct 3 ms 3284 KB Output is correct
22 Correct 3 ms 3412 KB Output is correct
23 Correct 2 ms 3284 KB Output is correct
24 Correct 2 ms 3348 KB Output is correct
25 Correct 3 ms 3404 KB Output is correct
26 Correct 2 ms 3284 KB Output is correct
27 Correct 3 ms 3284 KB Output is correct
28 Correct 2 ms 3284 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3284 KB Output is correct
2 Correct 2 ms 3284 KB Output is correct
3 Correct 3 ms 3412 KB Output is correct
4 Correct 3 ms 3284 KB Output is correct
5 Correct 3 ms 3412 KB Output is correct
6 Correct 3 ms 3284 KB Output is correct
7 Correct 3 ms 3412 KB Output is correct
8 Correct 3 ms 3284 KB Output is correct
9 Correct 3 ms 3284 KB Output is correct
10 Correct 3 ms 3284 KB Output is correct
11 Correct 3 ms 3412 KB Output is correct
12 Correct 2 ms 3284 KB Output is correct
13 Correct 2 ms 3284 KB Output is correct
14 Correct 2 ms 3252 KB Output is correct
15 Correct 2 ms 3284 KB Output is correct
16 Correct 3 ms 3284 KB Output is correct
17 Correct 3 ms 3412 KB Output is correct
18 Correct 3 ms 3284 KB Output is correct
19 Correct 2 ms 3284 KB Output is correct
20 Correct 3 ms 3284 KB Output is correct
21 Correct 3 ms 3284 KB Output is correct
22 Correct 3 ms 3412 KB Output is correct
23 Correct 2 ms 3284 KB Output is correct
24 Correct 2 ms 3348 KB Output is correct
25 Correct 3 ms 3404 KB Output is correct
26 Correct 2 ms 3284 KB Output is correct
27 Correct 3 ms 3284 KB Output is correct
28 Correct 2 ms 3284 KB Output is correct
29 Correct 6 ms 3412 KB Output is correct
30 Correct 6 ms 3412 KB Output is correct
31 Correct 6 ms 3428 KB Output is correct
32 Correct 4 ms 3412 KB Output is correct
33 Correct 3 ms 3408 KB Output is correct
34 Correct 7 ms 3416 KB Output is correct
35 Correct 9 ms 3448 KB Output is correct
36 Correct 8 ms 3416 KB Output is correct
37 Correct 6 ms 3412 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3284 KB Output is correct
2 Correct 2 ms 3284 KB Output is correct
3 Correct 3 ms 3412 KB Output is correct
4 Correct 3 ms 3284 KB Output is correct
5 Correct 3 ms 3412 KB Output is correct
6 Correct 3 ms 3284 KB Output is correct
7 Correct 3 ms 3412 KB Output is correct
8 Correct 3 ms 3284 KB Output is correct
9 Correct 3 ms 3284 KB Output is correct
10 Correct 3 ms 3284 KB Output is correct
11 Correct 3 ms 3412 KB Output is correct
12 Correct 2 ms 3284 KB Output is correct
13 Correct 2 ms 3284 KB Output is correct
14 Correct 2 ms 3252 KB Output is correct
15 Correct 2 ms 3284 KB Output is correct
16 Correct 3 ms 3284 KB Output is correct
17 Correct 3 ms 3412 KB Output is correct
18 Correct 3 ms 3284 KB Output is correct
19 Correct 2 ms 3284 KB Output is correct
20 Correct 3 ms 3284 KB Output is correct
21 Correct 3 ms 3284 KB Output is correct
22 Correct 3 ms 3412 KB Output is correct
23 Correct 2 ms 3284 KB Output is correct
24 Correct 2 ms 3348 KB Output is correct
25 Correct 3 ms 3404 KB Output is correct
26 Correct 2 ms 3284 KB Output is correct
27 Correct 3 ms 3284 KB Output is correct
28 Correct 2 ms 3284 KB Output is correct
29 Correct 6 ms 3412 KB Output is correct
30 Correct 6 ms 3412 KB Output is correct
31 Correct 6 ms 3428 KB Output is correct
32 Correct 4 ms 3412 KB Output is correct
33 Correct 3 ms 3408 KB Output is correct
34 Correct 7 ms 3416 KB Output is correct
35 Correct 9 ms 3448 KB Output is correct
36 Correct 8 ms 3416 KB Output is correct
37 Correct 6 ms 3412 KB Output is correct
38 Correct 92 ms 5624 KB Output is correct
39 Correct 53 ms 26752 KB Output is correct
40 Correct 218 ms 4736 KB Output is correct
41 Correct 219 ms 4232 KB Output is correct
42 Correct 202 ms 4936 KB Output is correct
43 Correct 32 ms 4264 KB Output is correct
44 Correct 108 ms 3540 KB Output is correct
45 Correct 83 ms 20812 KB Output is correct
46 Correct 81 ms 20788 KB Output is correct
47 Correct 71 ms 23096 KB Output is correct
48 Correct 71 ms 23088 KB Output is correct
49 Correct 77 ms 20908 KB Output is correct
50 Correct 73 ms 20892 KB Output is correct
51 Correct 59 ms 21564 KB Output is correct
52 Correct 57 ms 21684 KB Output is correct
53 Correct 126 ms 4412 KB Output is correct
54 Correct 98 ms 20756 KB Output is correct

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3284 KB Output is correct
2 Correct 2 ms 3284 KB Output is correct
3 Correct 2 ms 3284 KB Output is correct
4 Correct 2 ms 3284 KB Output is correct
5 Correct 8 ms 3380 KB Output is correct
6 Correct 2 ms 3284 KB Output is correct
7 Correct 2 ms 3284 KB Output is correct
8 Correct 2 ms 3284 KB Output is correct
9 Correct 2 ms 3336 KB Output is correct
10 Correct 2 ms 3284 KB Output is correct
11 Correct 2 ms 3284 KB Output is correct
12 Correct 9 ms 3412 KB Output is correct
13 Correct 83 ms 3396 KB Output is correct
14 Correct 56 ms 3400 KB Output is correct
15 Correct 59 ms 3284 KB Output is correct
16 Correct 4643 ms 21632 KB Output is correct
17 Execution timed out 5073 ms 23280 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3284 KB Output is correct
2 Correct 2 ms 3284 KB Output is correct
3 Correct 2 ms 3284 KB Output is correct
4 Correct 12 ms 3524 KB Output is correct
5 Correct 24 ms 3516 KB Output is correct
6 Correct 3 ms 3412 KB Output is correct
7 Correct 3 ms 3540 KB Output is correct
8 Correct 7 ms 3412 KB Output is correct
9 Correct 90 ms 5656 KB Output is correct
10 Correct 67 ms 26700 KB Output is correct
11 Correct 9 ms 3284 KB Output is correct
12 Correct 76 ms 3484 KB Output is correct
13 Execution timed out 5093 ms 34836 KB Time limit exceeded
14 Halted 0 ms 0 KB -