oj.uz

Submission #992073

# Submission time Handle Problem Language Result Execution time Memory
992073 2024-06-03T19:10:31 Z VMaksimoski008 Birthday gift (IZhO18_treearray) C++17
30 / 100
 4000 ms 5536 KB 
#include <bits/stdc++.h>

#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long

using namespace std;

using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
const double eps = 1e-9;

int n, m, q, depth[maxn], up[maxn][LOG];
vector<int> graph[maxn], val(maxn);

void dfs(int u, int p) {
    for(int i=1; i<LOG; i++) up[u][i] = up[up[u][i-1]][i-1];

    for(int &v : graph[u]) {
        if(v == p) continue;
        up[v][0] = u;
        depth[v] = depth[u] + 1;
        dfs(v, u);
    }
}

int jmp(int x, int d) {
    for(int j=LOG-1; j>=0; j--)
        if(d & (1 << j)) x = up[x][j];
    return x;
}

int get_lca(int a, int b) {
    if(a == 1e9) return b;
    if(b == 1e9) return a;
    if(depth[a] < depth[b]) swap(a, b);

    a = jmp(a, depth[a] - depth[b]);
    if(a == b) return a;
    for(int j=LOG-1; j>=0; j--)
        if(up[a][j] != up[b][j])
            a = up[a][j], b = up[b][j];

    return up[a][0];
}

struct SegTree {
    int n;
    vector<int> v;
    vector<int> tree;

    SegTree(int _n) {
        n = _n;
        tree.resize(4*n+5, 1e9);
    }

    void build(int u, int tl, int tr) {
        if(tl == tr) {
            tree[u] = v[tl];
        } else {
            int tm = (tl + tr) / 2;
            build(2*u, tl, tm);
            build(2*u+1, tm+1, tr);
            tree[u] = get_lca(tree[2*u], tree[2*u+1]);
        }
    }

    void update(int u, int tl, int tr, int p, int v) {
        if(tl == tr) {
            tree[u] = v;
        } else {
            int tm = (tl + tr) / 2;
            if(p <= tm) update(2*u, tl, tm, p, v);
            else update(2*u+1, tm+1, tr, p, v);
            tree[u] = get_lca(tree[2*u], tree[2*u+1]);
        }
    }

    int query(int u, int tl, int tr, int l, int r) {
        if(tl > tr || l > tr || tl > r) return 1e9;
        if(l <= tl && tr <= r) return tree[u];
        int tm = (tl + tr) / 2;
        return get_lca(
            query(2*u, tl, tm, l, r),
            query(2*u+1, tm+1, tr, l, r)
        );
    }

    void update(int p, int v) { update(1, 0, n-1, p, v); }
    int query(int l, int r) { return query(1, 0, n-1, l, r); }
};

int32_t main() {
    ios_base::sync_with_stdio(false);
    cout.tie(0); cin.tie(0);

    cin >> n >> m >> q;

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

    dfs(1, 0);

    for(int i=1; i<=m; i++) {
        cin >> val[i];
    }

    SegTree tree(m+1);
    for(int i=1; i<=m; i++) tree.update(i, val[i]);

    while(q--) {
        int t;
        cin >> t;

        if(t == 1) {
            int p, v;
            cin >> p >> v;
            val[p] = v;
            tree.update(p, v);
        } else {
            int l, r, v;
            cin >> l >> r >> v;

            bool ok = 0;

            for(int i=l; i<=r; i++) {
                int d = depth[v];
                int tl=i, tr=r, pos=i;
                while(tl <= tr) {
                    int mid = (tl + tr) / 2;
                    if(depth[tree.query(i, mid)] >= d) pos = mid, tl = mid + 1;
                    else tr = mid - 1;
                }

                //cout << i << ": " << pos << ", " << d << '\n';
                //cout << tree.query(i, pos) << '\n';
                if(tree.query(i, pos) == v && !ok) {
                    ok = 1;
                    cout << i << " " << pos << '\n';
                    break;
                }
            }

            if(!ok) cout << "-1 -1" << '\n';
        }
    }

    return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4956 KB n=5
2 Correct 1 ms 4956 KB n=100
3 Correct 1 ms 4952 KB n=100
4 Correct 1 ms 4952 KB n=100
5 Correct 2 ms 4956 KB n=100
6 Correct 3 ms 4956 KB n=100
7 Correct 3 ms 4956 KB n=100
8 Correct 2 ms 5208 KB n=100
9 Correct 2 ms 4956 KB n=100
10 Correct 3 ms 4956 KB n=100
11 Correct 2 ms 4956 KB n=100
12 Correct 1 ms 4956 KB n=100
13 Correct 2 ms 4956 KB n=100
14 Correct 2 ms 4952 KB n=100
15 Correct 1 ms 4956 KB n=100
16 Correct 1 ms 4956 KB n=100
17 Correct 2 ms 4956 KB n=100
18 Correct 2 ms 4956 KB n=100
19 Correct 1 ms 4952 KB n=100
20 Correct 2 ms 4952 KB n=100
21 Correct 2 ms 4952 KB n=100
22 Correct 1 ms 4952 KB n=100
23 Correct 3 ms 4956 KB n=100
24 Correct 4 ms 5116 KB n=100
25 Correct 2 ms 4956 KB n=100
26 Correct 1 ms 4952 KB n=12
27 Correct 3 ms 4956 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4956 KB n=5
2 Correct 1 ms 4956 KB n=100
3 Correct 1 ms 4952 KB n=100
4 Correct 1 ms 4952 KB n=100
5 Correct 2 ms 4956 KB n=100
6 Correct 3 ms 4956 KB n=100
7 Correct 3 ms 4956 KB n=100
8 Correct 2 ms 5208 KB n=100
9 Correct 2 ms 4956 KB n=100
10 Correct 3 ms 4956 KB n=100
11 Correct 2 ms 4956 KB n=100
12 Correct 1 ms 4956 KB n=100
13 Correct 2 ms 4956 KB n=100
14 Correct 2 ms 4952 KB n=100
15 Correct 1 ms 4956 KB n=100
16 Correct 1 ms 4956 KB n=100
17 Correct 2 ms 4956 KB n=100
18 Correct 2 ms 4956 KB n=100
19 Correct 1 ms 4952 KB n=100
20 Correct 2 ms 4952 KB n=100
21 Correct 2 ms 4952 KB n=100
22 Correct 1 ms 4952 KB n=100
23 Correct 3 ms 4956 KB n=100
24 Correct 4 ms 5116 KB n=100
25 Correct 2 ms 4956 KB n=100
26 Correct 1 ms 4952 KB n=12
27 Correct 3 ms 4956 KB n=100
28 Correct 2 ms 4956 KB n=500
29 Correct 27 ms 4952 KB n=500
30 Correct 21 ms 4956 KB n=500
31 Correct 24 ms 4956 KB n=500
32 Correct 4 ms 4956 KB n=500
33 Correct 19 ms 4952 KB n=500
34 Correct 2 ms 4956 KB n=500
35 Correct 24 ms 5208 KB n=500
36 Correct 136 ms 4956 KB n=500
37 Correct 138 ms 4956 KB n=500
38 Correct 135 ms 4956 KB n=500
39 Correct 44 ms 4956 KB n=500
40 Correct 42 ms 4952 KB n=500
41 Correct 42 ms 4956 KB n=500
42 Correct 82 ms 4956 KB n=500
43 Correct 71 ms 4956 KB n=500
44 Correct 68 ms 4956 KB n=500
45 Correct 3 ms 4956 KB n=500
46 Correct 25 ms 4956 KB n=500
47 Correct 22 ms 4956 KB n=500
48 Correct 2 ms 4952 KB n=500
49 Correct 20 ms 4956 KB n=500
50 Correct 27 ms 4956 KB n=500
51 Correct 34 ms 4952 KB n=500
52 Correct 44 ms 4952 KB n=500
53 Correct 36 ms 4956 KB n=500
54 Correct 33 ms 4952 KB n=500
55 Correct 5 ms 4956 KB n=278
56 Correct 185 ms 4956 KB n=500
57 Correct 195 ms 4952 KB n=500
58 Correct 84 ms 4952 KB n=500

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4956 KB n=5
2 Correct 1 ms 4956 KB n=100
3 Correct 1 ms 4952 KB n=100
4 Correct 1 ms 4952 KB n=100
5 Correct 2 ms 4956 KB n=100
6 Correct 3 ms 4956 KB n=100
7 Correct 3 ms 4956 KB n=100
8 Correct 2 ms 5208 KB n=100
9 Correct 2 ms 4956 KB n=100
10 Correct 3 ms 4956 KB n=100
11 Correct 2 ms 4956 KB n=100
12 Correct 1 ms 4956 KB n=100
13 Correct 2 ms 4956 KB n=100
14 Correct 2 ms 4952 KB n=100
15 Correct 1 ms 4956 KB n=100
16 Correct 1 ms 4956 KB n=100
17 Correct 2 ms 4956 KB n=100
18 Correct 2 ms 4956 KB n=100
19 Correct 1 ms 4952 KB n=100
20 Correct 2 ms 4952 KB n=100
21 Correct 2 ms 4952 KB n=100
22 Correct 1 ms 4952 KB n=100
23 Correct 3 ms 4956 KB n=100
24 Correct 4 ms 5116 KB n=100
25 Correct 2 ms 4956 KB n=100
26 Correct 1 ms 4952 KB n=12
27 Correct 3 ms 4956 KB n=100
28 Correct 2 ms 4956 KB n=500
29 Correct 27 ms 4952 KB n=500
30 Correct 21 ms 4956 KB n=500
31 Correct 24 ms 4956 KB n=500
32 Correct 4 ms 4956 KB n=500
33 Correct 19 ms 4952 KB n=500
34 Correct 2 ms 4956 KB n=500
35 Correct 24 ms 5208 KB n=500
36 Correct 136 ms 4956 KB n=500
37 Correct 138 ms 4956 KB n=500
38 Correct 135 ms 4956 KB n=500
39 Correct 44 ms 4956 KB n=500
40 Correct 42 ms 4952 KB n=500
41 Correct 42 ms 4956 KB n=500
42 Correct 82 ms 4956 KB n=500
43 Correct 71 ms 4956 KB n=500
44 Correct 68 ms 4956 KB n=500
45 Correct 3 ms 4956 KB n=500
46 Correct 25 ms 4956 KB n=500
47 Correct 22 ms 4956 KB n=500
48 Correct 2 ms 4952 KB n=500
49 Correct 20 ms 4956 KB n=500
50 Correct 27 ms 4956 KB n=500
51 Correct 34 ms 4952 KB n=500
52 Correct 44 ms 4952 KB n=500
53 Correct 36 ms 4956 KB n=500
54 Correct 33 ms 4952 KB n=500
55 Correct 5 ms 4956 KB n=278
56 Correct 185 ms 4956 KB n=500
57 Correct 195 ms 4952 KB n=500
58 Correct 84 ms 4952 KB n=500
59 Correct 9 ms 5208 KB n=2000
60 Correct 603 ms 5424 KB n=2000
61 Correct 597 ms 5212 KB n=2000
62 Correct 370 ms 5212 KB n=2000
63 Correct 12 ms 5208 KB n=2000
64 Correct 501 ms 5208 KB n=2000
65 Correct 6 ms 5212 KB n=2000
66 Correct 648 ms 5384 KB n=2000
67 Correct 35 ms 5212 KB n=2000
68 Correct 524 ms 5212 KB n=2000
69 Correct 3456 ms 5212 KB n=2000
70 Correct 3345 ms 5212 KB n=2000
71 Correct 3393 ms 5276 KB n=2000
72 Correct 1147 ms 5292 KB n=2000
73 Correct 1204 ms 5276 KB n=2000
74 Correct 5 ms 5292 KB n=1844
75 Correct 1143 ms 5272 KB n=2000
76 Correct 1852 ms 5212 KB n=2000
77 Correct 1810 ms 5272 KB n=2000
78 Correct 1940 ms 5276 KB n=2000
79 Correct 5 ms 5212 KB n=2000
80 Correct 536 ms 5212 KB n=2000
81 Correct 463 ms 5212 KB n=2000
82 Correct 6 ms 5212 KB n=2000
83 Correct 606 ms 5212 KB n=2000
84 Correct 723 ms 5212 KB n=2000
85 Correct 900 ms 5212 KB n=2000
86 Correct 977 ms 5212 KB n=2000
87 Correct 766 ms 5536 KB n=2000
88 Execution timed out 4022 ms 5212 KB Time limit exceeded
89 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4956 KB n=5
2 Correct 1 ms 4956 KB n=100
3 Correct 1 ms 4952 KB n=100
4 Correct 1 ms 4952 KB n=100
5 Correct 2 ms 4956 KB n=100
6 Correct 3 ms 4956 KB n=100
7 Correct 3 ms 4956 KB n=100
8 Correct 2 ms 5208 KB n=100
9 Correct 2 ms 4956 KB n=100
10 Correct 3 ms 4956 KB n=100
11 Correct 2 ms 4956 KB n=100
12 Correct 1 ms 4956 KB n=100
13 Correct 2 ms 4956 KB n=100
14 Correct 2 ms 4952 KB n=100
15 Correct 1 ms 4956 KB n=100
16 Correct 1 ms 4956 KB n=100
17 Correct 2 ms 4956 KB n=100
18 Correct 2 ms 4956 KB n=100
19 Correct 1 ms 4952 KB n=100
20 Correct 2 ms 4952 KB n=100
21 Correct 2 ms 4952 KB n=100
22 Correct 1 ms 4952 KB n=100
23 Correct 3 ms 4956 KB n=100
24 Correct 4 ms 5116 KB n=100
25 Correct 2 ms 4956 KB n=100
26 Correct 1 ms 4952 KB n=12
27 Correct 3 ms 4956 KB n=100
28 Correct 2 ms 4956 KB n=500
29 Correct 27 ms 4952 KB n=500
30 Correct 21 ms 4956 KB n=500
31 Correct 24 ms 4956 KB n=500
32 Correct 4 ms 4956 KB n=500
33 Correct 19 ms 4952 KB n=500
34 Correct 2 ms 4956 KB n=500
35 Correct 24 ms 5208 KB n=500
36 Correct 136 ms 4956 KB n=500
37 Correct 138 ms 4956 KB n=500
38 Correct 135 ms 4956 KB n=500
39 Correct 44 ms 4956 KB n=500
40 Correct 42 ms 4952 KB n=500
41 Correct 42 ms 4956 KB n=500
42 Correct 82 ms 4956 KB n=500
43 Correct 71 ms 4956 KB n=500
44 Correct 68 ms 4956 KB n=500
45 Correct 3 ms 4956 KB n=500
46 Correct 25 ms 4956 KB n=500
47 Correct 22 ms 4956 KB n=500
48 Correct 2 ms 4952 KB n=500
49 Correct 20 ms 4956 KB n=500
50 Correct 27 ms 4956 KB n=500
51 Correct 34 ms 4952 KB n=500
52 Correct 44 ms 4952 KB n=500
53 Correct 36 ms 4956 KB n=500
54 Correct 33 ms 4952 KB n=500
55 Correct 5 ms 4956 KB n=278
56 Correct 185 ms 4956 KB n=500
57 Correct 195 ms 4952 KB n=500
58 Correct 84 ms 4952 KB n=500
59 Correct 9 ms 5208 KB n=2000
60 Correct 603 ms 5424 KB n=2000
61 Correct 597 ms 5212 KB n=2000
62 Correct 370 ms 5212 KB n=2000
63 Correct 12 ms 5208 KB n=2000
64 Correct 501 ms 5208 KB n=2000
65 Correct 6 ms 5212 KB n=2000
66 Correct 648 ms 5384 KB n=2000
67 Correct 35 ms 5212 KB n=2000
68 Correct 524 ms 5212 KB n=2000
69 Correct 3456 ms 5212 KB n=2000
70 Correct 3345 ms 5212 KB n=2000
71 Correct 3393 ms 5276 KB n=2000
72 Correct 1147 ms 5292 KB n=2000
73 Correct 1204 ms 5276 KB n=2000
74 Correct 5 ms 5292 KB n=1844
75 Correct 1143 ms 5272 KB n=2000
76 Correct 1852 ms 5212 KB n=2000
77 Correct 1810 ms 5272 KB n=2000
78 Correct 1940 ms 5276 KB n=2000
79 Correct 5 ms 5212 KB n=2000
80 Correct 536 ms 5212 KB n=2000
81 Correct 463 ms 5212 KB n=2000
82 Correct 6 ms 5212 KB n=2000
83 Correct 606 ms 5212 KB n=2000
84 Correct 723 ms 5212 KB n=2000
85 Correct 900 ms 5212 KB n=2000
86 Correct 977 ms 5212 KB n=2000
87 Correct 766 ms 5536 KB n=2000
88 Execution timed out 4022 ms 5212 KB Time limit exceeded
89 Halted 0 ms 0 KB -