oj.uz

Submission #892757

# Submission time Handle Problem Language Result Execution time Memory
892757 2023-12-25T21:39:40 Z juliany2 Jail (JOI22_jail) C++17
49 / 100
 46 ms 1136 KB 
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define all(x) (x).begin(), (x).end()

const int N = 257;
int n, m;
vector<int> adj[N], g[N];
int s[N], t[N];
int vis[N];
bool ok;

void dfs(int v, int p, int t) {
    if (v == t)
        vis[v] = 1;

    for (int u : adj[v]) {
        if (u != p) {
            dfs(u, v, t);
            if (vis[u])
                vis[v] = 1;
        }
    }
}

void go(int v) {
    vis[v] = 1;

    for (int u : g[v]) {
        if (!vis[u])
            go(u);
        else if (vis[u] == 1)
            ok = 0;
    }

    vis[v] = 2;
}

void solve() {
    cin >> n;

    for (int i = 1; i <= n; i++) {
        adj[i].clear();
        g[i].clear();
    }

    for (int i = 1; i < n; i++) {
        int u, v;
        cin >> u >> v;

        adj[u].push_back(v);
        adj[v].push_back(u);
    }

    cin >> m;

    for (int i = 1; i <= m; i++)
        cin >> s[i] >> t[i];

    for (int i = 1; i <= m; i++) {
        memset(vis, 0, sizeof(vis));
        dfs(s[i], 0, t[i]);

        for (int j = 1; j <= m; j++) {
            if (i == j)
                continue;

            if (vis[s[j]])
                g[j].push_back(i);
            if (vis[t[j]])
                g[i].push_back(j);
        }
    }

    memset(vis, 0, sizeof(vis));
    ok = 1;

    for (int i = 1; i <= m; i++)
        if (!vis[i])
            go(i);

    cout << (ok ? "Yes" : "No") << '\n';
}

int main() {
    cin.tie(0)->sync_with_stdio(false);

    int t;
    cin >> t;
    
    while (t--)
        solve();

    return 0;
}

Subtask #1
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 10 ms 744 KB Output is correct
5 Correct 14 ms 1136 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 6 ms 604 KB Output is correct
9 Runtime error 1 ms 604 KB Execution killed with signal 11
10 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 488 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 492 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 488 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 484 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 464 KB Output is correct
28 Correct 0 ms 348 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 488 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 484 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 464 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 6 ms 604 KB Output is correct
30 Correct 3 ms 348 KB Output is correct
31 Correct 4 ms 560 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 4 ms 532 KB Output is correct
35 Correct 5 ms 348 KB Output is correct
36 Correct 4 ms 528 KB Output is correct
37 Correct 3 ms 516 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 488 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 484 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 464 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 6 ms 604 KB Output is correct
30 Correct 3 ms 348 KB Output is correct
31 Correct 4 ms 560 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 4 ms 532 KB Output is correct
35 Correct 5 ms 348 KB Output is correct
36 Correct 4 ms 528 KB Output is correct
37 Correct 3 ms 516 KB Output is correct
38 Runtime error 1 ms 604 KB Execution killed with signal 11
39 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 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 5 ms 600 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 520 KB Output is correct
13 Correct 40 ms 860 KB Output is correct
14 Correct 45 ms 1116 KB Output is correct
15 Correct 46 ms 964 KB Output is correct
16 Runtime error 1 ms 600 KB Execution killed with signal 11
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 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 10 ms 744 KB Output is correct
5 Correct 14 ms 1136 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 6 ms 604 KB Output is correct
9 Runtime error 1 ms 604 KB Execution killed with signal 11
10 Halted 0 ms 0 KB -