oj.uz

답안 #994214

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
994214 2024-06-07T09:08:03 Z vjudge1 Jail (JOI22_jail) C++14
61 / 100
 5000 ms 28632 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define fi first
#define se second

const int maxn = 120'000;
const int logn = 17;

int n, m;
vector<int> graph[1 + maxn];
int lift[1 + maxn][logn];
int dep[1 + maxn];
vector<int> dag[1 + maxn];
bool vis_dag[1 + maxn];
vector<int> top;
int pos[1 + maxn];
int in[1 + maxn];
int out[1 + maxn];
int timer;

void dfs_lift(int cur) {
    timer++;
    in[cur] = timer;
    for(int nei : graph[cur]) {
        if(nei != lift[cur][0]) {
            lift[nei][0] = cur;
            dep[nei] = dep[cur] + 1;
            dfs_lift(nei);
        }
    }
    timer++;
    out[cur] = timer;
}

int lca(int a, int b) {
    if(dep[a] > dep[b]) {
        swap(a, b);
    }
    for(int j = logn - 1; j >= 0; j--) {
        if(dep[b] - (1 << j) >= dep[a]) {
            b = lift[b][j];
        }
    }
    if(a == b) {
        return a;
    }
    for(int j = logn - 1; j >= 0; j--) {
        if(lift[a][j] != lift[b][j]) {
            a = lift[a][j];
            b = lift[b][j];
        }
    }
    return lift[b][0];
}

void add_edge(int a, int b) {
    dag[a].pb(b);
}

void dfs_top(int cur) {
    vis_dag[cur] = true;
    for(int nei : dag[cur]) {
        if(!vis_dag[nei]) {
            dfs_top(nei);
        }
    }
    top.pb(cur);
}

#define ancestor(a, b) (in[a] <= in[b] && out[a] >= out[b])

bool on_path(int a, int b, int c) {
    int ab = lca(a, b);
    return ancestor(ab, c) && (ancestor(c, a) || ancestor(c, b));
}

bool solve() {
    cin >> n;
    for(int i = 1; i <= n - 1; i++) {
        int a, b;
        cin >> a >> b;
        graph[a].pb(b);
        graph[b].pb(a);
    }
    dfs_lift(1);
    lift[1][0] = 1;
    for(int j = 1; j < logn; j++) {
        for(int i = 1; i <= n; i++) {
            lift[i][j] = lift[lift[i][j - 1]][j - 1];
        }
    }
    cin >> m;
    vector<pii > pairs;
    for(int i = 1; i <= m; i++) {
        int a, b;
        cin >> a >> b;
        pairs.pb(mp(a, b));
    }
    for(int i = 0; i < m; i++) {
        for(int j = 0; j < m; j++) {
            if(i != j) {
                if(on_path(pairs[i].fi, pairs[i].se, pairs[j].fi)) {
                    add_edge(j + 1, i + 1);
                }
                if(on_path(pairs[i].fi, pairs[i].se, pairs[j].se)) {
                    add_edge(i + 1, j + 1);
                }
            }
        }
    }
    for(int i = 1; i <= m; i++) {
        if(!vis_dag[i]) {
            dfs_top(i);
        }
    }
    reverse(top.begin(), top.end());
    int idx = 0;
    for(int x : top) {
        idx++;
        pos[x] = idx;
    }
    for(int a = 1; a <= m; a++) {
        for(int b : dag[a]) {
            if(pos[b] < pos[a]) {
                return false;
            }
        }
    }
    return true;
}

/*
int n, m;
vector<int> graph[1 + maxn];
int lift[1 + maxn][logn];
int dep[1 + maxn];
vector<int> dag[1 + maxn];
bool vis_dag[1 + maxn];
vector<int> top;
int pos[1 + maxn];
int in[1 + maxn];
int out[1 + maxn];
int timer;
*/

void reset() {
    for(int i = 1; i <= max(n, m); i++) {
        graph[i].clear();
        for(int j = 0; j < logn; j++) {
            lift[i][j] = 0;
        }
        dep[i] = 0;
        dag[i].clear();
        vis_dag[i] = false;
        pos[i] = 0;
        in[i] = 0;
        out[i] = 0;
    }
    top.clear();
    timer = 0;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int T = 1;
    cin >> T;
    while(T--) {
        cout << (solve() ? "Yes" : "No") << "\n";
        reset();
    }
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9560 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 7 ms 9564 KB Output is correct
5 Correct 13 ms 9748 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 2 ms 9756 KB Output is correct
8 Correct 10 ms 9820 KB Output is correct
9 Correct 214 ms 12176 KB Output is correct
10 Correct 52 ms 28496 KB Output is correct
11 Correct 8 ms 9564 KB Output is correct
12 Correct 112 ms 9756 KB Output is correct
13 Execution timed out 5026 ms 28268 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 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 3 ms 9560 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 3 ms 9564 KB Output is correct
8 Correct 2 ms 9564 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 2 ms 9564 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 3 ms 9560 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 3 ms 9564 KB Output is correct
8 Correct 2 ms 9564 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 2 ms 9564 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9564 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 2 ms 9564 KB Output is correct
17 Correct 2 ms 9564 KB Output is correct
18 Correct 3 ms 9564 KB Output is correct
19 Correct 3 ms 9564 KB Output is correct
20 Correct 3 ms 9564 KB Output is correct
21 Correct 3 ms 9564 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9564 KB Output is correct
24 Correct 2 ms 9564 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9564 KB Output is correct
27 Correct 2 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 3 ms 9560 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 3 ms 9564 KB Output is correct
8 Correct 2 ms 9564 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 2 ms 9564 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9564 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 2 ms 9564 KB Output is correct
17 Correct 2 ms 9564 KB Output is correct
18 Correct 3 ms 9564 KB Output is correct
19 Correct 3 ms 9564 KB Output is correct
20 Correct 3 ms 9564 KB Output is correct
21 Correct 3 ms 9564 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9564 KB Output is correct
24 Correct 2 ms 9564 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9564 KB Output is correct
27 Correct 2 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 10 ms 9816 KB Output is correct
30 Correct 10 ms 9764 KB Output is correct
31 Correct 8 ms 9564 KB Output is correct
32 Correct 6 ms 9712 KB Output is correct
33 Correct 2 ms 9564 KB Output is correct
34 Correct 17 ms 9564 KB Output is correct
35 Correct 19 ms 9564 KB Output is correct
36 Correct 16 ms 9564 KB Output is correct
37 Correct 10 ms 9564 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 3 ms 9560 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 3 ms 9564 KB Output is correct
8 Correct 2 ms 9564 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 2 ms 9564 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9564 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 2 ms 9564 KB Output is correct
17 Correct 2 ms 9564 KB Output is correct
18 Correct 3 ms 9564 KB Output is correct
19 Correct 3 ms 9564 KB Output is correct
20 Correct 3 ms 9564 KB Output is correct
21 Correct 3 ms 9564 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9564 KB Output is correct
24 Correct 2 ms 9564 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9564 KB Output is correct
27 Correct 2 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 10 ms 9816 KB Output is correct
30 Correct 10 ms 9764 KB Output is correct
31 Correct 8 ms 9564 KB Output is correct
32 Correct 6 ms 9712 KB Output is correct
33 Correct 2 ms 9564 KB Output is correct
34 Correct 17 ms 9564 KB Output is correct
35 Correct 19 ms 9564 KB Output is correct
36 Correct 16 ms 9564 KB Output is correct
37 Correct 10 ms 9564 KB Output is correct
38 Correct 212 ms 12212 KB Output is correct
39 Correct 45 ms 28632 KB Output is correct
40 Correct 423 ms 11000 KB Output is correct
41 Correct 425 ms 9816 KB Output is correct
42 Correct 480 ms 11224 KB Output is correct
43 Correct 20 ms 10328 KB Output is correct
44 Correct 370 ms 9820 KB Output is correct
45 Correct 63 ms 19804 KB Output is correct
46 Correct 52 ms 19792 KB Output is correct
47 Correct 54 ms 23564 KB Output is correct
48 Correct 56 ms 23388 KB Output is correct
49 Correct 54 ms 19800 KB Output is correct
50 Correct 50 ms 19800 KB Output is correct
51 Correct 30 ms 21084 KB Output is correct
52 Correct 29 ms 20936 KB Output is correct
53 Correct 348 ms 10060 KB Output is correct
54 Correct 56 ms 19796 KB Output is correct

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9560 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 1 ms 9564 KB Output is correct
4 Correct 1 ms 9564 KB Output is correct
5 Correct 7 ms 9564 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 2 ms 9564 KB Output is correct
8 Correct 2 ms 9564 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 3 ms 9560 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 16 ms 9760 KB Output is correct
13 Correct 171 ms 9772 KB Output is correct
14 Correct 87 ms 9740 KB Output is correct
15 Correct 127 ms 9560 KB Output is correct
16 Execution timed out 5065 ms 20060 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9560 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 7 ms 9564 KB Output is correct
5 Correct 13 ms 9748 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 2 ms 9756 KB Output is correct
8 Correct 10 ms 9820 KB Output is correct
9 Correct 214 ms 12176 KB Output is correct
10 Correct 52 ms 28496 KB Output is correct
11 Correct 8 ms 9564 KB Output is correct
12 Correct 112 ms 9756 KB Output is correct
13 Execution timed out 5026 ms 28268 KB Time limit exceeded
14 Halted 0 ms 0 KB -