oj.uz

Submission #1083652

# Submission time Handle Problem Language Result Execution time Memory
1083652 2024-09-03T18:09:27 Z ShaShi Jail (JOI22_jail) C++17
49 / 100
 755 ms 784544 KB 
#include <bits/stdc++.h>
 
// #define int long long
 
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
 
#define F first 
#define S second
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
#define kill(x) cout << x << "\n", exit(0);
#define pii pair<int, int>
#define endl "\n"
 
 
 
using namespace std;
typedef long long ll;
typedef __int128_t lll;
typedef long double ld;
 
const int MAXN = (int)2e5 + 7;
const int MOD = 998244353;
const ll INF = (ll)1e9 + 7;
const int LG = 18;


int n, m, k, tmp, t, tmp2, tmp3, tmp4, u, v, w, flag, q, ans, flag2;
pii arr[MAXN]; int par[MAXN], h[MAXN], pow2dad[MAXN][LG], fake_t[MAXN][LG], fake_s[MAXN][LG], ind_s[MAXN], ind_t[MAXN];
vector<int> adj[MAXN], G[MAXN*40];
int seen[MAXN*40];


inline void add_edge(int u, int v) { G[u].pb(v); }
inline int up(int v, int k) { for (int i=LG-1; i>=0; i--) if (k >= (1<<i)) k -= (1<<i), v = pow2dad[v][i]; return v; }
inline int LCA(int u, int v) { if (h[u] < h[v]) swap(u, v); u = up(u, h[u]-h[v]); if (u == v) return u; for (int i=LG-1; i>=0; i--) if (h[u] >= (1<<i) && pow2dad[u][i] != pow2dad[v][i]) u = pow2dad[u][i], v = pow2dad[v][i]; return pow2dad[u][0]; }



void DFS(int v) {
    for (int u:adj[v]) {
        if (u == par[v]) continue;

        par[u] = v; h[u] = h[v]+1; DFS(u);
    }
}


void DFS2(int v) {
    seen[v] = 1;

    for (int u:G[v]) {
        if (seen[u] == 0) DFS2(u);
        else if (seen[u] == 1) tmp = 0;
    }

    seen[v] = 2;
}


inline void up_s(int v, int k, int ind) {
    // cout << "S : " << v << " " << k << " " << ind << endl;

    for (int i=LG-1; i>=0; i--) {
        if ((1<<i) <= k) {
            k -= (1<<i); add_edge(fake_s[v][i], ind); v = pow2dad[v][i];
        }
    }
}


inline void up_t(int v, int k, int ind) {
    // cout << "T : " << v << " " << k << " " << ind << endl;

    for (int i=LG-1; i>=0; i--) {
        if ((1<<i) <= k) {
            k -= (1<<i); add_edge(ind, fake_t[v][i]); v = pow2dad[v][i];
        }
    }
}


void solve() {
    cin >> n;

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

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

    cin >> m;

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

        ind_s[u] = i; ind_t[v] = i; arr[i] = {u, v};
    }

    DFS(1); flag = n+1;

    for (int i=1; i<=n; i++) {
        pow2dad[i][0] = par[i];

        fake_s[i][0] = flag++; if (ind_s[i]) add_edge(ind_s[i], fake_s[i][0]);
        fake_t[i][0] = flag++; if (ind_t[i]) add_edge(fake_t[i][0], ind_t[i]);
    }

    for (int j=1; j<LG; j++) {
        for (int i=1; i<=n; i++) {
            pow2dad[i][j] = pow2dad[pow2dad[i][j-1]][j-1];

            fake_s[i][j] = flag++; add_edge(fake_s[i][j-1], fake_s[i][j]); add_edge(fake_s[pow2dad[i][j-1]][j-1], fake_s[i][j]);
            fake_t[i][j] = flag++; add_edge(fake_t[i][j], fake_t[i][j-1]); add_edge(fake_t[i][j], fake_t[pow2dad[i][j-1]][j-1]);
        }
    }


    for (int i=1; i<=m; i++) {
        u = arr[i].F; v = arr[i].S;

        int lca = LCA(u, v);

        if (lca == u) {
            up_s(v, h[v]-h[u], i);
            up_t(par[v], h[v]-h[u], i);
        } else if (lca == v) {
            up_s(par[u], h[u]-h[v], i);
            up_t(u, h[u]-h[v], i);
        } else {
            up_s(par[u], h[u]-h[lca], i); up_t(u, h[u]-h[lca]+1, i);
            up_s(v, h[v]-h[lca]+1, i); up_t(par[v], h[v]-h[lca], i);
        }
    }


    tmp = 1;
    
    for (int i=1; i<=n; i++) {
        if (seen[i]) continue;

        DFS2(i);

        if (!tmp) break;
    }

    cout << (tmp? "Yes\n" : "No\n");


    fill_n(seen, flag+7, 0);  fill_n(ind_s, flag+7, 0); fill_n(ind_t, flag+7, 0);  fill_n(par, flag+7, 0); 
    for (int i=1; i<=flag+7; i++) adj[i].clear(), G[i].clear();
}


int32_t main() {
    #ifdef LOCAL
    freopen("inp.in", "r", stdin);
    freopen("res.out", "w", stdout);
    #else
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #endif

    cin >> t;

    while (t--) solve();

    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 192848 KB Output is correct
2 Correct 77 ms 192868 KB Output is correct
3 Correct 81 ms 192848 KB Output is correct
4 Correct 108 ms 197780 KB Output is correct
5 Correct 133 ms 202380 KB Output is correct
6 Correct 79 ms 193876 KB Output is correct
7 Correct 82 ms 193780 KB Output is correct
8 Correct 80 ms 193872 KB Output is correct
9 Correct 200 ms 209880 KB Output is correct
10 Runtime error 741 ms 782536 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 84 ms 192880 KB Output is correct
2 Correct 85 ms 193032 KB Output is correct
3 Correct 82 ms 193876 KB Output is correct
4 Correct 81 ms 193872 KB Output is correct
5 Correct 91 ms 193872 KB Output is correct
6 Correct 83 ms 193872 KB Output is correct
7 Correct 80 ms 193876 KB Output is correct
8 Correct 78 ms 193876 KB Output is correct
9 Correct 81 ms 193876 KB Output is correct
10 Correct 82 ms 193872 KB Output is correct
11 Correct 85 ms 193872 KB Output is correct
12 Correct 77 ms 193776 KB Output is correct
13 Correct 84 ms 193908 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 84 ms 192880 KB Output is correct
2 Correct 85 ms 193032 KB Output is correct
3 Correct 82 ms 193876 KB Output is correct
4 Correct 81 ms 193872 KB Output is correct
5 Correct 91 ms 193872 KB Output is correct
6 Correct 83 ms 193872 KB Output is correct
7 Correct 80 ms 193876 KB Output is correct
8 Correct 78 ms 193876 KB Output is correct
9 Correct 81 ms 193876 KB Output is correct
10 Correct 82 ms 193872 KB Output is correct
11 Correct 85 ms 193872 KB Output is correct
12 Correct 77 ms 193776 KB Output is correct
13 Correct 84 ms 193908 KB Output is correct
14 Correct 84 ms 192848 KB Output is correct
15 Correct 80 ms 192956 KB Output is correct
16 Correct 86 ms 194128 KB Output is correct
17 Correct 82 ms 194036 KB Output is correct
18 Correct 83 ms 193872 KB Output is correct
19 Correct 89 ms 193104 KB Output is correct
20 Correct 84 ms 193872 KB Output is correct
21 Correct 85 ms 193848 KB Output is correct
22 Correct 81 ms 194032 KB Output is correct
23 Correct 80 ms 193120 KB Output is correct
24 Correct 80 ms 193104 KB Output is correct
25 Correct 80 ms 193928 KB Output is correct
26 Correct 82 ms 193520 KB Output is correct
27 Correct 81 ms 194032 KB Output is correct
28 Correct 82 ms 192948 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 84 ms 192880 KB Output is correct
2 Correct 85 ms 193032 KB Output is correct
3 Correct 82 ms 193876 KB Output is correct
4 Correct 81 ms 193872 KB Output is correct
5 Correct 91 ms 193872 KB Output is correct
6 Correct 83 ms 193872 KB Output is correct
7 Correct 80 ms 193876 KB Output is correct
8 Correct 78 ms 193876 KB Output is correct
9 Correct 81 ms 193876 KB Output is correct
10 Correct 82 ms 193872 KB Output is correct
11 Correct 85 ms 193872 KB Output is correct
12 Correct 77 ms 193776 KB Output is correct
13 Correct 84 ms 193908 KB Output is correct
14 Correct 84 ms 192848 KB Output is correct
15 Correct 80 ms 192956 KB Output is correct
16 Correct 86 ms 194128 KB Output is correct
17 Correct 82 ms 194036 KB Output is correct
18 Correct 83 ms 193872 KB Output is correct
19 Correct 89 ms 193104 KB Output is correct
20 Correct 84 ms 193872 KB Output is correct
21 Correct 85 ms 193848 KB Output is correct
22 Correct 81 ms 194032 KB Output is correct
23 Correct 80 ms 193120 KB Output is correct
24 Correct 80 ms 193104 KB Output is correct
25 Correct 80 ms 193928 KB Output is correct
26 Correct 82 ms 193520 KB Output is correct
27 Correct 81 ms 194032 KB Output is correct
28 Correct 82 ms 192948 KB Output is correct
29 Correct 80 ms 193916 KB Output is correct
30 Correct 88 ms 194032 KB Output is correct
31 Correct 83 ms 193876 KB Output is correct
32 Correct 85 ms 193876 KB Output is correct
33 Correct 83 ms 193872 KB Output is correct
34 Correct 83 ms 193872 KB Output is correct
35 Correct 90 ms 193708 KB Output is correct
36 Correct 84 ms 193800 KB Output is correct
37 Correct 80 ms 193616 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 84 ms 192880 KB Output is correct
2 Correct 85 ms 193032 KB Output is correct
3 Correct 82 ms 193876 KB Output is correct
4 Correct 81 ms 193872 KB Output is correct
5 Correct 91 ms 193872 KB Output is correct
6 Correct 83 ms 193872 KB Output is correct
7 Correct 80 ms 193876 KB Output is correct
8 Correct 78 ms 193876 KB Output is correct
9 Correct 81 ms 193876 KB Output is correct
10 Correct 82 ms 193872 KB Output is correct
11 Correct 85 ms 193872 KB Output is correct
12 Correct 77 ms 193776 KB Output is correct
13 Correct 84 ms 193908 KB Output is correct
14 Correct 84 ms 192848 KB Output is correct
15 Correct 80 ms 192956 KB Output is correct
16 Correct 86 ms 194128 KB Output is correct
17 Correct 82 ms 194036 KB Output is correct
18 Correct 83 ms 193872 KB Output is correct
19 Correct 89 ms 193104 KB Output is correct
20 Correct 84 ms 193872 KB Output is correct
21 Correct 85 ms 193848 KB Output is correct
22 Correct 81 ms 194032 KB Output is correct
23 Correct 80 ms 193120 KB Output is correct
24 Correct 80 ms 193104 KB Output is correct
25 Correct 80 ms 193928 KB Output is correct
26 Correct 82 ms 193520 KB Output is correct
27 Correct 81 ms 194032 KB Output is correct
28 Correct 82 ms 192948 KB Output is correct
29 Correct 80 ms 193916 KB Output is correct
30 Correct 88 ms 194032 KB Output is correct
31 Correct 83 ms 193876 KB Output is correct
32 Correct 85 ms 193876 KB Output is correct
33 Correct 83 ms 193872 KB Output is correct
34 Correct 83 ms 193872 KB Output is correct
35 Correct 90 ms 193708 KB Output is correct
36 Correct 84 ms 193800 KB Output is correct
37 Correct 80 ms 193616 KB Output is correct
38 Correct 201 ms 209856 KB Output is correct
39 Runtime error 755 ms 782472 KB Execution killed with signal 11
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 193068 KB Output is correct
2 Correct 74 ms 193068 KB Output is correct
3 Correct 79 ms 192852 KB Output is correct
4 Correct 77 ms 192852 KB Output is correct
5 Correct 90 ms 195224 KB Output is correct
6 Correct 86 ms 193876 KB Output is correct
7 Correct 80 ms 193856 KB Output is correct
8 Correct 80 ms 193108 KB Output is correct
9 Correct 78 ms 193104 KB Output is correct
10 Correct 80 ms 193264 KB Output is correct
11 Correct 79 ms 193120 KB Output is correct
12 Correct 79 ms 193744 KB Output is correct
13 Correct 113 ms 197576 KB Output is correct
14 Correct 133 ms 202196 KB Output is correct
15 Correct 133 ms 202256 KB Output is correct
16 Runtime error 625 ms 784544 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 80 ms 192848 KB Output is correct
2 Correct 77 ms 192868 KB Output is correct
3 Correct 81 ms 192848 KB Output is correct
4 Correct 108 ms 197780 KB Output is correct
5 Correct 133 ms 202380 KB Output is correct
6 Correct 79 ms 193876 KB Output is correct
7 Correct 82 ms 193780 KB Output is correct
8 Correct 80 ms 193872 KB Output is correct
9 Correct 200 ms 209880 KB Output is correct
10 Runtime error 741 ms 782536 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -