oj.uz

Submission #601319

# Submission time Handle Problem Language Result Execution time Memory
601319 2022-07-21T16:58:25 Z dxz05 Jail (JOI22_jail) C++14
21 / 100
 1155 ms 83820 KB 
//#pragma GCC optimize("Ofast,O2,O3,unroll-loops")
//#pragma GCC target("avx2")

#include <bits/stdc++.h>

using namespace std;

void debug_out() { cerr << endl; }

template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << "[" << H << "]";
    debug_out(T...);
}

#ifdef dddxxz
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

#define SZ(s) ((int)s.size())
#define all(x) (x).begin(), (x).end()
#define lla(x) (x).rbegin(), (x).rend()
#define bpc(x) __builtin_popcount(x)
#define bpcll(x) __builtin_popcountll(x)
#define MP make_pair

clock_t startTime;

double getCurrentTime() {
    return (double) (clock() - startTime) / CLOCKS_PER_SEC;
}

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

typedef long long ll;
const int MOD = 1e9 + 7;
const int INF = 1000000101;
const long long LLINF = 1223372000000000555;
const int N = 2e5 + 3e2;
const int M = 5555;

vector<int> g[N];

int tin[N], tout[N], timer = 0;
int up[N][18], depth[N];

inline void dfs(int v, int p){
    tin[v] = ++timer;
    depth[v] = depth[p] + 1;

    up[v][0] = p;
    for (int i = 1; i < 18; i++){
        up[v][i] = up[up[v][i - 1]][i - 1];
    }
    for (int u : g[v]){
        if (u != p) dfs(u, v);
    }
    tout[v] = ++timer;
}

inline bool upper(int u, int v){
    return tin[u] <= tin[v] && tout[v] <= tout[u];
}

inline int lca(int u, int v){
    if (upper(u, v)) return u;
    if (upper(v, u)) return v;
    for (int i = 17; i >= 0; i--){
        if (!upper(up[u][i], v)) u = up[u][i];
    }
    return up[u][0];
}

inline int dist(int u, int v){
    return depth[u] + depth[v] - 2 * depth[lca(u, v)];
}

inline bool in(int a, int b, int c){
    return dist(a, c) == dist(a, b) + dist(b, c);
}

vector<int> gg[N];

int color[N];
bool dfs(int v){
    color[v] = 1;
    for (int u : gg[v]){
        if (color[u] == 1) return true;
        if (color[u] == 0 && dfs(u)) return true;
    }
    color[v] = 2;
    return false;
}

void solve(int TC) {
    int n;
    cin >> n;

    timer = 0;
    for (int i = 0; i < n; i++) g[i].clear();

    for (int i = 0; i < n - 1; i++){
        int a, b;
        cin >> a >> b;
        --a, --b;
        g[a].push_back(b);
        g[b].push_back(a);
    }

    dfs(0, 0);

    int m;
    cin >> m;

    vector<int> S(m), T(m);
    for (int i = 0; i < m; i++){
        cin >> S[i] >> T[i];
        S[i]--, T[i]--;
    }

    for (int i = 0; i < m; i++){
        gg[i].clear();
        color[i] = 0;
    }

    for (int i = 0; i < m; i++){
        for (int it = 0; it < 100; it++){
            int j = rng() % m;
            while (i == j) j = rng() % m;
            if (in(S[i], S[j], T[i])) gg[j].push_back(i);
            if (in(S[i], T[j], T[i])) gg[i].push_back(j);
        }
    }

    for (int i = 0; i < m; i++){
        if (color[i] == 0 && dfs(i)){
            cout << "No\n";
            return;
        }
    }

    cout << "Yes\n";

}

int main() {
    startTime = clock();
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);

#ifdef dddxxz
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif

    int TC = 1;
    cin >> TC;

    for (int test = 1; test <= TC; test++) {
        //debug(test);
        //cout << "Case #" << test << ": ";
        solve(test);
    }

#ifdef dddxxz
    cerr << endl << "Time: " << int(getCurrentTime() * 1000) << " ms" << endl;
#endif

    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9752 KB Output is correct
3 Correct 5 ms 9668 KB Output is correct
4 Correct 22 ms 10108 KB Output is correct
5 Correct 44 ms 10396 KB Output is correct
6 Correct 6 ms 9828 KB Output is correct
7 Correct 6 ms 9764 KB Output is correct
8 Correct 12 ms 9940 KB Output is correct
9 Correct 64 ms 12268 KB Output is correct
10 Correct 53 ms 29136 KB Output is correct
11 Correct 37 ms 9920 KB Output is correct
12 Correct 167 ms 10796 KB Output is correct
13 Correct 237 ms 30276 KB Output is correct
14 Correct 239 ms 30276 KB Output is correct
15 Correct 464 ms 51724 KB Output is correct
16 Correct 1155 ms 83820 KB Output is correct
17 Correct 526 ms 73680 KB Output is correct
18 Correct 536 ms 31620 KB Output is correct
19 Correct 409 ms 43452 KB Output is correct
20 Incorrect 464 ms 43312 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 7 ms 9812 KB Output is correct
4 Correct 6 ms 9812 KB Output is correct
5 Correct 9 ms 9812 KB Output is correct
6 Correct 8 ms 9764 KB Output is correct
7 Correct 8 ms 9832 KB Output is correct
8 Correct 7 ms 9824 KB Output is correct
9 Correct 8 ms 9812 KB Output is correct
10 Correct 9 ms 9760 KB Output is correct
11 Correct 6 ms 9812 KB Output is correct
12 Correct 7 ms 9752 KB Output is correct
13 Correct 7 ms 9812 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 7 ms 9812 KB Output is correct
4 Correct 6 ms 9812 KB Output is correct
5 Correct 9 ms 9812 KB Output is correct
6 Correct 8 ms 9764 KB Output is correct
7 Correct 8 ms 9832 KB Output is correct
8 Correct 7 ms 9824 KB Output is correct
9 Correct 8 ms 9812 KB Output is correct
10 Correct 9 ms 9760 KB Output is correct
11 Correct 6 ms 9812 KB Output is correct
12 Correct 7 ms 9752 KB Output is correct
13 Correct 7 ms 9812 KB Output is correct
14 Correct 7 ms 9684 KB Output is correct
15 Correct 6 ms 9684 KB Output is correct
16 Correct 7 ms 9812 KB Output is correct
17 Correct 12 ms 9812 KB Output is correct
18 Correct 11 ms 9816 KB Output is correct
19 Correct 8 ms 9684 KB Output is correct
20 Correct 13 ms 9812 KB Output is correct
21 Correct 11 ms 9704 KB Output is correct
22 Correct 12 ms 9796 KB Output is correct
23 Correct 13 ms 9748 KB Output is correct
24 Correct 10 ms 9684 KB Output is correct
25 Correct 12 ms 9812 KB Output is correct
26 Correct 11 ms 9684 KB Output is correct
27 Correct 12 ms 9760 KB Output is correct
28 Correct 12 ms 9812 KB Output is correct

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 7 ms 9812 KB Output is correct
4 Correct 6 ms 9812 KB Output is correct
5 Correct 9 ms 9812 KB Output is correct
6 Correct 8 ms 9764 KB Output is correct
7 Correct 8 ms 9832 KB Output is correct
8 Correct 7 ms 9824 KB Output is correct
9 Correct 8 ms 9812 KB Output is correct
10 Correct 9 ms 9760 KB Output is correct
11 Correct 6 ms 9812 KB Output is correct
12 Correct 7 ms 9752 KB Output is correct
13 Correct 7 ms 9812 KB Output is correct
14 Correct 7 ms 9684 KB Output is correct
15 Correct 6 ms 9684 KB Output is correct
16 Correct 7 ms 9812 KB Output is correct
17 Correct 12 ms 9812 KB Output is correct
18 Correct 11 ms 9816 KB Output is correct
19 Correct 8 ms 9684 KB Output is correct
20 Correct 13 ms 9812 KB Output is correct
21 Correct 11 ms 9704 KB Output is correct
22 Correct 12 ms 9796 KB Output is correct
23 Correct 13 ms 9748 KB Output is correct
24 Correct 10 ms 9684 KB Output is correct
25 Correct 12 ms 9812 KB Output is correct
26 Correct 11 ms 9684 KB Output is correct
27 Correct 12 ms 9760 KB Output is correct
28 Correct 12 ms 9812 KB Output is correct
29 Correct 12 ms 9916 KB Output is correct
30 Correct 74 ms 9840 KB Output is correct
31 Correct 47 ms 9812 KB Output is correct
32 Correct 69 ms 9772 KB Output is correct
33 Correct 23 ms 9812 KB Output is correct
34 Correct 126 ms 9836 KB Output is correct
35 Correct 101 ms 9984 KB Output is correct
36 Incorrect 107 ms 9756 KB Output isn't correct
37 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 7 ms 9812 KB Output is correct
4 Correct 6 ms 9812 KB Output is correct
5 Correct 9 ms 9812 KB Output is correct
6 Correct 8 ms 9764 KB Output is correct
7 Correct 8 ms 9832 KB Output is correct
8 Correct 7 ms 9824 KB Output is correct
9 Correct 8 ms 9812 KB Output is correct
10 Correct 9 ms 9760 KB Output is correct
11 Correct 6 ms 9812 KB Output is correct
12 Correct 7 ms 9752 KB Output is correct
13 Correct 7 ms 9812 KB Output is correct
14 Correct 7 ms 9684 KB Output is correct
15 Correct 6 ms 9684 KB Output is correct
16 Correct 7 ms 9812 KB Output is correct
17 Correct 12 ms 9812 KB Output is correct
18 Correct 11 ms 9816 KB Output is correct
19 Correct 8 ms 9684 KB Output is correct
20 Correct 13 ms 9812 KB Output is correct
21 Correct 11 ms 9704 KB Output is correct
22 Correct 12 ms 9796 KB Output is correct
23 Correct 13 ms 9748 KB Output is correct
24 Correct 10 ms 9684 KB Output is correct
25 Correct 12 ms 9812 KB Output is correct
26 Correct 11 ms 9684 KB Output is correct
27 Correct 12 ms 9760 KB Output is correct
28 Correct 12 ms 9812 KB Output is correct
29 Correct 12 ms 9916 KB Output is correct
30 Correct 74 ms 9840 KB Output is correct
31 Correct 47 ms 9812 KB Output is correct
32 Correct 69 ms 9772 KB Output is correct
33 Correct 23 ms 9812 KB Output is correct
34 Correct 126 ms 9836 KB Output is correct
35 Correct 101 ms 9984 KB Output is correct
36 Incorrect 107 ms 9756 KB Output isn't correct
37 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9768 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 5 ms 9748 KB Output is correct
5 Correct 38 ms 9908 KB Output is correct
6 Correct 8 ms 9764 KB Output is correct
7 Correct 7 ms 9744 KB Output is correct
8 Correct 9 ms 9748 KB Output is correct
9 Correct 11 ms 9832 KB Output is correct
10 Correct 10 ms 9684 KB Output is correct
11 Correct 12 ms 9744 KB Output is correct
12 Incorrect 109 ms 9804 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9752 KB Output is correct
3 Correct 5 ms 9668 KB Output is correct
4 Correct 22 ms 10108 KB Output is correct
5 Correct 44 ms 10396 KB Output is correct
6 Correct 6 ms 9828 KB Output is correct
7 Correct 6 ms 9764 KB Output is correct
8 Correct 12 ms 9940 KB Output is correct
9 Correct 64 ms 12268 KB Output is correct
10 Correct 53 ms 29136 KB Output is correct
11 Correct 37 ms 9920 KB Output is correct
12 Correct 167 ms 10796 KB Output is correct
13 Correct 237 ms 30276 KB Output is correct
14 Correct 239 ms 30276 KB Output is correct
15 Correct 464 ms 51724 KB Output is correct
16 Correct 1155 ms 83820 KB Output is correct
17 Correct 526 ms 73680 KB Output is correct
18 Correct 536 ms 31620 KB Output is correct
19 Correct 409 ms 43452 KB Output is correct
20 Incorrect 464 ms 43312 KB Output isn't correct
21 Halted 0 ms 0 KB -