oj.uz

Submission #608740

# Submission time Handle Problem Language Result Execution time Memory
608740 2022-07-27T09:49:47 Z messiuuuuu Birthday gift (IZhO18_treearray) C++14
56 / 100
 1212 ms 262144 KB 
///https://codeforces.com/group/Chft8wRRWW/contest/391796/problem/D
///https://oj.uz/problem/submit/IZhO18_treearray
#include<bits/stdc++.h>
#define task "C"
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
using namespace std;
const int MAXN = 2e5 + 5;
const ll INF = 1e18 + 5;
const int LOGN = 19;

int n, m, q;
vector<int> Adj[MAXN];
int a[MAXN];

void Input()
{
    cin >> n >> m >> q;
    for (int i = 1; i < n; i++)
    {
        int u, v;
        cin >> u >> v;
        Adj[u].pb(v);
        Adj[v].pb(u);
    }
    for (int i = 1; i <= m; i++)
    {
        cin >> a[i];
    }
}

int P[MAXN][LOGN], dep[MAXN];

void DFS(int u, int par)
{
    for (int v : Adj[u])
    {
        if (v == par)
        {
            continue;
        }
        dep[v] = dep[u] + 1;
        P[v][0] = u;
        DFS(v, u);
    }
}

int LCA(int u, int v)
{
    if (dep[u] > dep[v])
        swap(u, v);
    for (int i = LOGN - 1; i >= 0; i--)
    {
        if (dep[u] <= dep[P[v][i]])
        {
            v = P[v][i];
        }
    }
    for (int i = LOGN - 1; i >= 0; i--)
    {
        if (P[u][i] != P[v][i])
        {
            u = P[u][i];
            v = P[v][i];
        }
    }
    if (u != v)
    {
        u = P[u][0];
    }
    return u;
}

multiset<int> st[4 * MAXN];

void Update(int id, int l, int r, int p, int oldval, int nval)
{
    if (r < p || p < l)
        return;

    if (oldval != -1)
        st[id].erase(st[id].find(oldval));
    st[id].insert(nval);

    if (l == p && p == r)
    {
        return;
    }
    int mid = (l + r) >> 1;
    Update(2 * id, l, mid, p, oldval, nval);
    Update(2 * id + 1, mid + 1, r, p, oldval, nval);
}

int sta, lft, rght;

void GetAns(int id, int l, int r, int u, int v, int val)
{
    if (u > v || r < u || v < l)
        return;
    if (u <= l && r <= v)
    {
        if (st[id].count(val))
        {
            sta = id;
            lft = l;
            rght = r;
        }
        return;
    }
    int mid = (l + r) >> 1;
    GetAns(2 * id, l, mid, u, v, val);
    GetAns(2 * id + 1, mid + 1, r, u, v, val);
}

int Walk(int id, int l, int r, int val)
{
    if (l == r)
    {
        return l;
    }
    int mid = (l + r) >> 1;
    if (st[2 * id].count(val))
        return Walk(2 * id, l, mid, val);
    else
        return Walk(2 * id + 1, mid + 1, r, val);
}

void Solve()
{
    dep[1] = 1;
    DFS(1, 0);
    for (int i = 1; i < LOGN; i++)
        for (int j = 1; j <= n; j++)
            P[j][i] = P[P[j][i - 1]][i - 1];

    for (int i = 1; i <= m; i++)
    {
        Update(1, 1, m, i, -1, a[i]);
        if (i < m)
            Update(1, 1, m, i, -1, LCA(a[i], a[i + 1]));
    }

    while (q-- > 0)
    {
        int t, l, r;
        cin >> t >> l >> r;
        if (t == 1)
        {
            if (l < m)
                Update(1, 1, m, l, LCA(a[l], a[l + 1]), LCA(r, a[l + 1]));
            if (l > 1)
                Update(1, 1, m, l - 1, LCA(a[l - 1], a[l]), LCA(a[l - 1], r));
            Update(1, 1, m, l, a[l], r);
            a[l] = r;
        } else
        {
            if (n <= 2000)
            {
                int k;
                cin >> k;
                sta = -1;
                GetAns(1, 1, m, l, r - 1, k);
                if (sta == -1)
                {
                    if (a[r] == k)
                    {
                        cout << r << ' ' << r << '\n';
                    } else
                        cout << -1 << ' ' << -1 << '\n';
                } else
                {
                    int res = Walk(sta, lft, rght, k);
                    cout << res << ' ' << res + (LCA(a[res], a[res + 1]) == k) << '\n';
                }
            }
        }
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    if (fopen(task".INP","r"))
    {
        freopen(task".INP","r",stdin);
        //freopen(task".OUT","w",stdout);
    }
    Input();
    Solve();
}

Compilation message

treearray.cpp: In function 'int main()':
treearray.cpp:189:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  189 |         freopen(task".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 42580 KB n=5
2 Correct 23 ms 42580 KB n=100
3 Correct 25 ms 42580 KB n=100
4 Correct 29 ms 42684 KB n=100
5 Correct 24 ms 42580 KB n=100
6 Correct 24 ms 42640 KB n=100
7 Correct 25 ms 42632 KB n=100
8 Correct 24 ms 42580 KB n=100
9 Correct 23 ms 42580 KB n=100
10 Correct 23 ms 42580 KB n=100
11 Correct 24 ms 42608 KB n=100
12 Correct 24 ms 42572 KB n=100
13 Correct 20 ms 42580 KB n=100
14 Correct 20 ms 42580 KB n=100
15 Correct 21 ms 42620 KB n=100
16 Correct 20 ms 42580 KB n=100
17 Correct 20 ms 42648 KB n=100
18 Correct 21 ms 42636 KB n=100
19 Correct 24 ms 42676 KB n=100
20 Correct 21 ms 42692 KB n=100
21 Correct 25 ms 42580 KB n=100
22 Correct 20 ms 42580 KB n=100
23 Correct 20 ms 42580 KB n=100
24 Correct 20 ms 42668 KB n=100
25 Correct 27 ms 42580 KB n=100
26 Correct 21 ms 42624 KB n=12
27 Correct 22 ms 42664 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 42580 KB n=5
2 Correct 23 ms 42580 KB n=100
3 Correct 25 ms 42580 KB n=100
4 Correct 29 ms 42684 KB n=100
5 Correct 24 ms 42580 KB n=100
6 Correct 24 ms 42640 KB n=100
7 Correct 25 ms 42632 KB n=100
8 Correct 24 ms 42580 KB n=100
9 Correct 23 ms 42580 KB n=100
10 Correct 23 ms 42580 KB n=100
11 Correct 24 ms 42608 KB n=100
12 Correct 24 ms 42572 KB n=100
13 Correct 20 ms 42580 KB n=100
14 Correct 20 ms 42580 KB n=100
15 Correct 21 ms 42620 KB n=100
16 Correct 20 ms 42580 KB n=100
17 Correct 20 ms 42648 KB n=100
18 Correct 21 ms 42636 KB n=100
19 Correct 24 ms 42676 KB n=100
20 Correct 21 ms 42692 KB n=100
21 Correct 25 ms 42580 KB n=100
22 Correct 20 ms 42580 KB n=100
23 Correct 20 ms 42580 KB n=100
24 Correct 20 ms 42668 KB n=100
25 Correct 27 ms 42580 KB n=100
26 Correct 21 ms 42624 KB n=12
27 Correct 22 ms 42664 KB n=100
28 Correct 24 ms 43092 KB n=500
29 Correct 23 ms 43168 KB n=500
30 Correct 23 ms 43092 KB n=500
31 Correct 23 ms 43128 KB n=500
32 Correct 23 ms 43092 KB n=500
33 Correct 23 ms 43060 KB n=500
34 Correct 24 ms 43092 KB n=500
35 Correct 25 ms 43088 KB n=500
36 Correct 24 ms 43072 KB n=500
37 Correct 24 ms 43084 KB n=500
38 Correct 27 ms 43120 KB n=500
39 Correct 23 ms 43092 KB n=500
40 Correct 24 ms 43148 KB n=500
41 Correct 22 ms 43048 KB n=500
42 Correct 25 ms 43128 KB n=500
43 Correct 29 ms 43092 KB n=500
44 Correct 28 ms 43096 KB n=500
45 Correct 27 ms 43068 KB n=500
46 Correct 27 ms 43084 KB n=500
47 Correct 30 ms 43152 KB n=500
48 Correct 26 ms 43124 KB n=500
49 Correct 27 ms 43092 KB n=500
50 Correct 26 ms 43092 KB n=500
51 Correct 24 ms 43092 KB n=500
52 Correct 26 ms 43076 KB n=500
53 Correct 31 ms 43132 KB n=500
54 Correct 27 ms 43068 KB n=500
55 Correct 28 ms 42980 KB n=278
56 Correct 27 ms 43052 KB n=500
57 Correct 23 ms 43096 KB n=500
58 Correct 29 ms 43116 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 42580 KB n=5
2 Correct 23 ms 42580 KB n=100
3 Correct 25 ms 42580 KB n=100
4 Correct 29 ms 42684 KB n=100
5 Correct 24 ms 42580 KB n=100
6 Correct 24 ms 42640 KB n=100
7 Correct 25 ms 42632 KB n=100
8 Correct 24 ms 42580 KB n=100
9 Correct 23 ms 42580 KB n=100
10 Correct 23 ms 42580 KB n=100
11 Correct 24 ms 42608 KB n=100
12 Correct 24 ms 42572 KB n=100
13 Correct 20 ms 42580 KB n=100
14 Correct 20 ms 42580 KB n=100
15 Correct 21 ms 42620 KB n=100
16 Correct 20 ms 42580 KB n=100
17 Correct 20 ms 42648 KB n=100
18 Correct 21 ms 42636 KB n=100
19 Correct 24 ms 42676 KB n=100
20 Correct 21 ms 42692 KB n=100
21 Correct 25 ms 42580 KB n=100
22 Correct 20 ms 42580 KB n=100
23 Correct 20 ms 42580 KB n=100
24 Correct 20 ms 42668 KB n=100
25 Correct 27 ms 42580 KB n=100
26 Correct 21 ms 42624 KB n=12
27 Correct 22 ms 42664 KB n=100
28 Correct 24 ms 43092 KB n=500
29 Correct 23 ms 43168 KB n=500
30 Correct 23 ms 43092 KB n=500
31 Correct 23 ms 43128 KB n=500
32 Correct 23 ms 43092 KB n=500
33 Correct 23 ms 43060 KB n=500
34 Correct 24 ms 43092 KB n=500
35 Correct 25 ms 43088 KB n=500
36 Correct 24 ms 43072 KB n=500
37 Correct 24 ms 43084 KB n=500
38 Correct 27 ms 43120 KB n=500
39 Correct 23 ms 43092 KB n=500
40 Correct 24 ms 43148 KB n=500
41 Correct 22 ms 43048 KB n=500
42 Correct 25 ms 43128 KB n=500
43 Correct 29 ms 43092 KB n=500
44 Correct 28 ms 43096 KB n=500
45 Correct 27 ms 43068 KB n=500
46 Correct 27 ms 43084 KB n=500
47 Correct 30 ms 43152 KB n=500
48 Correct 26 ms 43124 KB n=500
49 Correct 27 ms 43092 KB n=500
50 Correct 26 ms 43092 KB n=500
51 Correct 24 ms 43092 KB n=500
52 Correct 26 ms 43076 KB n=500
53 Correct 31 ms 43132 KB n=500
54 Correct 27 ms 43068 KB n=500
55 Correct 28 ms 42980 KB n=278
56 Correct 27 ms 43052 KB n=500
57 Correct 23 ms 43096 KB n=500
58 Correct 29 ms 43116 KB n=500
59 Correct 68 ms 45100 KB n=2000
60 Correct 51 ms 45140 KB n=2000
61 Correct 50 ms 45148 KB n=2000
62 Correct 55 ms 45132 KB n=2000
63 Correct 61 ms 45100 KB n=2000
64 Correct 52 ms 45128 KB n=2000
65 Correct 75 ms 45108 KB n=2000
66 Correct 54 ms 45164 KB n=2000
67 Correct 53 ms 45020 KB n=2000
68 Correct 45 ms 45148 KB n=2000
69 Correct 38 ms 45096 KB n=2000
70 Correct 33 ms 45120 KB n=2000
71 Correct 43 ms 45012 KB n=2000
72 Correct 31 ms 45004 KB n=2000
73 Correct 30 ms 45012 KB n=2000
74 Correct 42 ms 45008 KB n=1844
75 Correct 30 ms 45096 KB n=2000
76 Correct 42 ms 45004 KB n=2000
77 Correct 52 ms 45044 KB n=2000
78 Correct 42 ms 45092 KB n=2000
79 Correct 55 ms 44984 KB n=2000
80 Correct 60 ms 45160 KB n=2000
81 Correct 57 ms 45072 KB n=2000
82 Correct 49 ms 45092 KB n=2000
83 Correct 49 ms 45156 KB n=2000
84 Correct 45 ms 45072 KB n=2000
85 Correct 47 ms 45048 KB n=2000
86 Correct 49 ms 45112 KB n=2000
87 Correct 58 ms 44976 KB n=2000
88 Correct 44 ms 45192 KB n=2000
89 Correct 53 ms 45080 KB n=2000
90 Correct 50 ms 45204 KB n=2000
91 Correct 32 ms 44996 KB n=2000

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 42580 KB n=5
2 Correct 23 ms 42580 KB n=100
3 Correct 25 ms 42580 KB n=100
4 Correct 29 ms 42684 KB n=100
5 Correct 24 ms 42580 KB n=100
6 Correct 24 ms 42640 KB n=100
7 Correct 25 ms 42632 KB n=100
8 Correct 24 ms 42580 KB n=100
9 Correct 23 ms 42580 KB n=100
10 Correct 23 ms 42580 KB n=100
11 Correct 24 ms 42608 KB n=100
12 Correct 24 ms 42572 KB n=100
13 Correct 20 ms 42580 KB n=100
14 Correct 20 ms 42580 KB n=100
15 Correct 21 ms 42620 KB n=100
16 Correct 20 ms 42580 KB n=100
17 Correct 20 ms 42648 KB n=100
18 Correct 21 ms 42636 KB n=100
19 Correct 24 ms 42676 KB n=100
20 Correct 21 ms 42692 KB n=100
21 Correct 25 ms 42580 KB n=100
22 Correct 20 ms 42580 KB n=100
23 Correct 20 ms 42580 KB n=100
24 Correct 20 ms 42668 KB n=100
25 Correct 27 ms 42580 KB n=100
26 Correct 21 ms 42624 KB n=12
27 Correct 22 ms 42664 KB n=100
28 Correct 24 ms 43092 KB n=500
29 Correct 23 ms 43168 KB n=500
30 Correct 23 ms 43092 KB n=500
31 Correct 23 ms 43128 KB n=500
32 Correct 23 ms 43092 KB n=500
33 Correct 23 ms 43060 KB n=500
34 Correct 24 ms 43092 KB n=500
35 Correct 25 ms 43088 KB n=500
36 Correct 24 ms 43072 KB n=500
37 Correct 24 ms 43084 KB n=500
38 Correct 27 ms 43120 KB n=500
39 Correct 23 ms 43092 KB n=500
40 Correct 24 ms 43148 KB n=500
41 Correct 22 ms 43048 KB n=500
42 Correct 25 ms 43128 KB n=500
43 Correct 29 ms 43092 KB n=500
44 Correct 28 ms 43096 KB n=500
45 Correct 27 ms 43068 KB n=500
46 Correct 27 ms 43084 KB n=500
47 Correct 30 ms 43152 KB n=500
48 Correct 26 ms 43124 KB n=500
49 Correct 27 ms 43092 KB n=500
50 Correct 26 ms 43092 KB n=500
51 Correct 24 ms 43092 KB n=500
52 Correct 26 ms 43076 KB n=500
53 Correct 31 ms 43132 KB n=500
54 Correct 27 ms 43068 KB n=500
55 Correct 28 ms 42980 KB n=278
56 Correct 27 ms 43052 KB n=500
57 Correct 23 ms 43096 KB n=500
58 Correct 29 ms 43116 KB n=500
59 Correct 68 ms 45100 KB n=2000
60 Correct 51 ms 45140 KB n=2000
61 Correct 50 ms 45148 KB n=2000
62 Correct 55 ms 45132 KB n=2000
63 Correct 61 ms 45100 KB n=2000
64 Correct 52 ms 45128 KB n=2000
65 Correct 75 ms 45108 KB n=2000
66 Correct 54 ms 45164 KB n=2000
67 Correct 53 ms 45020 KB n=2000
68 Correct 45 ms 45148 KB n=2000
69 Correct 38 ms 45096 KB n=2000
70 Correct 33 ms 45120 KB n=2000
71 Correct 43 ms 45012 KB n=2000
72 Correct 31 ms 45004 KB n=2000
73 Correct 30 ms 45012 KB n=2000
74 Correct 42 ms 45008 KB n=1844
75 Correct 30 ms 45096 KB n=2000
76 Correct 42 ms 45004 KB n=2000
77 Correct 52 ms 45044 KB n=2000
78 Correct 42 ms 45092 KB n=2000
79 Correct 55 ms 44984 KB n=2000
80 Correct 60 ms 45160 KB n=2000
81 Correct 57 ms 45072 KB n=2000
82 Correct 49 ms 45092 KB n=2000
83 Correct 49 ms 45156 KB n=2000
84 Correct 45 ms 45072 KB n=2000
85 Correct 47 ms 45048 KB n=2000
86 Correct 49 ms 45112 KB n=2000
87 Correct 58 ms 44976 KB n=2000
88 Correct 44 ms 45192 KB n=2000
89 Correct 53 ms 45080 KB n=2000
90 Correct 50 ms 45204 KB n=2000
91 Correct 32 ms 44996 KB n=2000
92 Runtime error 1212 ms 262144 KB Execution killed with signal 9
93 Halted 0 ms 0 KB -