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Submission #685549

# Submission time Handle Problem Language Result Execution time Memory
685549 2023-01-24T14:09:47 Z speedyArda Birthday gift (IZhO18_treearray) C++14
100 / 100
 1207 ms 83416 KB 
#include "bits/stdc++.h"
using namespace std;
const int MAXN = 4e5+10; // 4e5 because euler can have 2 * n size which would requires n * 8 size for segment tree or otherwise it could cause error
int seglca[MAXN * 4], in[MAXN], out[MAXN], height[MAXN], seq[MAXN];
vector<int> euler;
vector< vector<int> > adj(MAXN);
set< pair<int, int> > pref[MAXN];
void dfs(int v, int p, int h)
{
    in[v] = euler.size();
    euler.push_back(v);
    height[v] = h;
    for(int e : adj[v])
    {
        if(e == p)
            continue;
        dfs(e, v, h + 1);
        euler.push_back(v);
    }
    out[v] = euler.size() - 1;

}

void buildlca(int v, int tl, int tr)
{
    if(tl == tr)
    {
        seglca[v] = euler[tl];
        //cout << v << " " << tl << " " << tr << " " << seglca[v] << "\n";
        return;
    }

    int tm = (tl + tr) / 2;
    buildlca(2 * v, tl, tm);
    buildlca(2 * v + 1, tm + 1, tr);
    if(height[seglca[v * 2]] < height[seglca[v * 2 + 1]])
        seglca[v] = seglca[v * 2];
    else   
        seglca[v] = seglca[v * 2 + 1];
    //cout << v << " " << tl << " " << tr << " " << seglca[v * 2] << " " << seglca[2 * v + 1] << " " <<  in[seglca[v * 2]] << " " << in[seglca[v * 2 + 1]] << " " << seglca[v] << "\n";
}

int getlca(int v, int tl, int tr, int l, int r)
{
    if(l > r)
        return -1;
    if(tl == l && tr == r)
        return seglca[v];
    int tm = (tl + tr) / 2;

    int left = getlca(2 * v, tl, tm, l, min(r, tm)), right = getlca(2 * v + 1, tm + 1, tr, max(l, tm + 1), r);
    if(right == -1)
        return left;
    if(left == -1)
        return right;
    if(height[left] < height[right])
        return left;
    else
        return right;

}

int lca(int a, int b)
{
    if(in[a] > in[b])
        swap(a, b);
    return getlca(1, 0, euler.size() - 1, in[a], in[b]);
}


int main() 
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m, q;
    cin >> n >> m >> q;
    for(int i = 1; i <= n - 1; i++)
    {
        int f, s;
        cin >> f >> s;
        adj[f].push_back(s);
        adj[s].push_back(f);
    }

    dfs(1, -1, 0);
    buildlca(1, 0, euler.size() - 1);
    for(int i = 0; i < m; i++) {
        cin >> seq[i];
        pref[seq[i]].insert({i, i});
        if(i > 0)
        {
            pref[lca(seq[i - 1], seq[i])].insert({i - 1, i});
        }
    }

    while(q--)
    {
        int type;
        cin >> type;
        if(type == 1)
        {
            int pos, val;
            cin >> pos >> val;
            pos--;
            pref[seq[pos]].erase({pos, pos});
            if(pos > 0)
                pref[lca(seq[pos - 1], seq[pos])].erase({pos - 1, pos});
            if(pos < m - 1)
                pref[lca(seq[pos + 1], seq[pos])].erase({pos, pos + 1});

            seq[pos] = val;
            pref[seq[pos]].insert({pos, pos});
            if(pos > 0)
                pref[lca(seq[pos - 1], seq[pos])].insert({pos - 1, pos});
            if(pos < m - 1)
                pref[lca(seq[pos + 1], seq[pos])].insert({pos, pos + 1});
            //updateans(1, 0, m - 1, pos, val);
        } else 
        {
            int l, r, v;
            cin >> l >> r >> v;
            l--;
            r--;

            auto it = pref[v].lower_bound({l, l});

            if(it != pref[v].end() && (*it).first >= l && (*it).second <= r)
                cout << (*it).first + 1 << " " << (*it).second + 1 << "\n";
            else
                cout << "-1 -1\n";
           
        }
    }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 28512 KB n=5
2 Correct 13 ms 28512 KB n=100
3 Correct 13 ms 28512 KB n=100
4 Correct 16 ms 28536 KB n=100
5 Correct 13 ms 28512 KB n=100
6 Correct 13 ms 28512 KB n=100
7 Correct 13 ms 28552 KB n=100
8 Correct 13 ms 28512 KB n=100
9 Correct 13 ms 28588 KB n=100
10 Correct 13 ms 28484 KB n=100
11 Correct 13 ms 28528 KB n=100
12 Correct 13 ms 28512 KB n=100
13 Correct 13 ms 28568 KB n=100
14 Correct 14 ms 28512 KB n=100
15 Correct 13 ms 28540 KB n=100
16 Correct 13 ms 28512 KB n=100
17 Correct 13 ms 28468 KB n=100
18 Correct 13 ms 28500 KB n=100
19 Correct 13 ms 28476 KB n=100
20 Correct 13 ms 28500 KB n=100
21 Correct 14 ms 28500 KB n=100
22 Correct 13 ms 28500 KB n=100
23 Correct 13 ms 28500 KB n=100
24 Correct 13 ms 28504 KB n=100
25 Correct 13 ms 28500 KB n=100
26 Correct 14 ms 28444 KB n=12
27 Correct 16 ms 28500 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 28512 KB n=5
2 Correct 13 ms 28512 KB n=100
3 Correct 13 ms 28512 KB n=100
4 Correct 16 ms 28536 KB n=100
5 Correct 13 ms 28512 KB n=100
6 Correct 13 ms 28512 KB n=100
7 Correct 13 ms 28552 KB n=100
8 Correct 13 ms 28512 KB n=100
9 Correct 13 ms 28588 KB n=100
10 Correct 13 ms 28484 KB n=100
11 Correct 13 ms 28528 KB n=100
12 Correct 13 ms 28512 KB n=100
13 Correct 13 ms 28568 KB n=100
14 Correct 14 ms 28512 KB n=100
15 Correct 13 ms 28540 KB n=100
16 Correct 13 ms 28512 KB n=100
17 Correct 13 ms 28468 KB n=100
18 Correct 13 ms 28500 KB n=100
19 Correct 13 ms 28476 KB n=100
20 Correct 13 ms 28500 KB n=100
21 Correct 14 ms 28500 KB n=100
22 Correct 13 ms 28500 KB n=100
23 Correct 13 ms 28500 KB n=100
24 Correct 13 ms 28504 KB n=100
25 Correct 13 ms 28500 KB n=100
26 Correct 14 ms 28444 KB n=12
27 Correct 16 ms 28500 KB n=100
28 Correct 15 ms 28628 KB n=500
29 Correct 16 ms 28564 KB n=500
30 Correct 17 ms 28632 KB n=500
31 Correct 17 ms 28640 KB n=500
32 Correct 16 ms 28628 KB n=500
33 Correct 16 ms 28628 KB n=500
34 Correct 14 ms 28552 KB n=500
35 Correct 16 ms 28600 KB n=500
36 Correct 15 ms 28640 KB n=500
37 Correct 14 ms 28640 KB n=500
38 Correct 14 ms 28640 KB n=500
39 Correct 15 ms 28640 KB n=500
40 Correct 16 ms 28640 KB n=500
41 Correct 14 ms 28556 KB n=500
42 Correct 15 ms 28640 KB n=500
43 Correct 14 ms 28640 KB n=500
44 Correct 14 ms 28640 KB n=500
45 Correct 17 ms 28640 KB n=500
46 Correct 20 ms 28640 KB n=500
47 Correct 19 ms 28640 KB n=500
48 Correct 16 ms 28640 KB n=500
49 Correct 14 ms 28640 KB n=500
50 Correct 13 ms 28576 KB n=500
51 Correct 15 ms 28588 KB n=500
52 Correct 15 ms 28636 KB n=500
53 Correct 16 ms 28640 KB n=500
54 Correct 14 ms 28668 KB n=500
55 Correct 15 ms 28636 KB n=278
56 Correct 18 ms 28640 KB n=500
57 Correct 16 ms 28548 KB n=500
58 Correct 14 ms 28640 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 28512 KB n=5
2 Correct 13 ms 28512 KB n=100
3 Correct 13 ms 28512 KB n=100
4 Correct 16 ms 28536 KB n=100
5 Correct 13 ms 28512 KB n=100
6 Correct 13 ms 28512 KB n=100
7 Correct 13 ms 28552 KB n=100
8 Correct 13 ms 28512 KB n=100
9 Correct 13 ms 28588 KB n=100
10 Correct 13 ms 28484 KB n=100
11 Correct 13 ms 28528 KB n=100
12 Correct 13 ms 28512 KB n=100
13 Correct 13 ms 28568 KB n=100
14 Correct 14 ms 28512 KB n=100
15 Correct 13 ms 28540 KB n=100
16 Correct 13 ms 28512 KB n=100
17 Correct 13 ms 28468 KB n=100
18 Correct 13 ms 28500 KB n=100
19 Correct 13 ms 28476 KB n=100
20 Correct 13 ms 28500 KB n=100
21 Correct 14 ms 28500 KB n=100
22 Correct 13 ms 28500 KB n=100
23 Correct 13 ms 28500 KB n=100
24 Correct 13 ms 28504 KB n=100
25 Correct 13 ms 28500 KB n=100
26 Correct 14 ms 28444 KB n=12
27 Correct 16 ms 28500 KB n=100
28 Correct 15 ms 28628 KB n=500
29 Correct 16 ms 28564 KB n=500
30 Correct 17 ms 28632 KB n=500
31 Correct 17 ms 28640 KB n=500
32 Correct 16 ms 28628 KB n=500
33 Correct 16 ms 28628 KB n=500
34 Correct 14 ms 28552 KB n=500
35 Correct 16 ms 28600 KB n=500
36 Correct 15 ms 28640 KB n=500
37 Correct 14 ms 28640 KB n=500
38 Correct 14 ms 28640 KB n=500
39 Correct 15 ms 28640 KB n=500
40 Correct 16 ms 28640 KB n=500
41 Correct 14 ms 28556 KB n=500
42 Correct 15 ms 28640 KB n=500
43 Correct 14 ms 28640 KB n=500
44 Correct 14 ms 28640 KB n=500
45 Correct 17 ms 28640 KB n=500
46 Correct 20 ms 28640 KB n=500
47 Correct 19 ms 28640 KB n=500
48 Correct 16 ms 28640 KB n=500
49 Correct 14 ms 28640 KB n=500
50 Correct 13 ms 28576 KB n=500
51 Correct 15 ms 28588 KB n=500
52 Correct 15 ms 28636 KB n=500
53 Correct 16 ms 28640 KB n=500
54 Correct 14 ms 28668 KB n=500
55 Correct 15 ms 28636 KB n=278
56 Correct 18 ms 28640 KB n=500
57 Correct 16 ms 28548 KB n=500
58 Correct 14 ms 28640 KB n=500
59 Correct 20 ms 28896 KB n=2000
60 Correct 18 ms 29016 KB n=2000
61 Correct 20 ms 28928 KB n=2000
62 Correct 18 ms 28788 KB n=2000
63 Correct 20 ms 28776 KB n=2000
64 Correct 20 ms 28816 KB n=2000
65 Correct 20 ms 28804 KB n=2000
66 Correct 17 ms 28884 KB n=2000
67 Correct 18 ms 28824 KB n=2000
68 Correct 17 ms 28856 KB n=2000
69 Correct 16 ms 28796 KB n=2000
70 Correct 17 ms 28764 KB n=2000
71 Correct 18 ms 28900 KB n=2000
72 Correct 16 ms 28884 KB n=2000
73 Correct 17 ms 28828 KB n=2000
74 Correct 18 ms 28756 KB n=1844
75 Correct 16 ms 28896 KB n=2000
76 Correct 18 ms 28884 KB n=2000
77 Correct 18 ms 28824 KB n=2000
78 Correct 19 ms 28884 KB n=2000
79 Correct 21 ms 28884 KB n=2000
80 Correct 18 ms 28884 KB n=2000
81 Correct 18 ms 28884 KB n=2000
82 Correct 18 ms 28840 KB n=2000
83 Correct 18 ms 28896 KB n=2000
84 Correct 20 ms 28884 KB n=2000
85 Correct 18 ms 28884 KB n=2000
86 Correct 18 ms 28788 KB n=2000
87 Correct 18 ms 28880 KB n=2000
88 Correct 18 ms 28920 KB n=2000
89 Correct 17 ms 28884 KB n=2000
90 Correct 19 ms 28884 KB n=2000
91 Correct 23 ms 28884 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 28512 KB n=5
2 Correct 13 ms 28512 KB n=100
3 Correct 13 ms 28512 KB n=100
4 Correct 16 ms 28536 KB n=100
5 Correct 13 ms 28512 KB n=100
6 Correct 13 ms 28512 KB n=100
7 Correct 13 ms 28552 KB n=100
8 Correct 13 ms 28512 KB n=100
9 Correct 13 ms 28588 KB n=100
10 Correct 13 ms 28484 KB n=100
11 Correct 13 ms 28528 KB n=100
12 Correct 13 ms 28512 KB n=100
13 Correct 13 ms 28568 KB n=100
14 Correct 14 ms 28512 KB n=100
15 Correct 13 ms 28540 KB n=100
16 Correct 13 ms 28512 KB n=100
17 Correct 13 ms 28468 KB n=100
18 Correct 13 ms 28500 KB n=100
19 Correct 13 ms 28476 KB n=100
20 Correct 13 ms 28500 KB n=100
21 Correct 14 ms 28500 KB n=100
22 Correct 13 ms 28500 KB n=100
23 Correct 13 ms 28500 KB n=100
24 Correct 13 ms 28504 KB n=100
25 Correct 13 ms 28500 KB n=100
26 Correct 14 ms 28444 KB n=12
27 Correct 16 ms 28500 KB n=100
28 Correct 15 ms 28628 KB n=500
29 Correct 16 ms 28564 KB n=500
30 Correct 17 ms 28632 KB n=500
31 Correct 17 ms 28640 KB n=500
32 Correct 16 ms 28628 KB n=500
33 Correct 16 ms 28628 KB n=500
34 Correct 14 ms 28552 KB n=500
35 Correct 16 ms 28600 KB n=500
36 Correct 15 ms 28640 KB n=500
37 Correct 14 ms 28640 KB n=500
38 Correct 14 ms 28640 KB n=500
39 Correct 15 ms 28640 KB n=500
40 Correct 16 ms 28640 KB n=500
41 Correct 14 ms 28556 KB n=500
42 Correct 15 ms 28640 KB n=500
43 Correct 14 ms 28640 KB n=500
44 Correct 14 ms 28640 KB n=500
45 Correct 17 ms 28640 KB n=500
46 Correct 20 ms 28640 KB n=500
47 Correct 19 ms 28640 KB n=500
48 Correct 16 ms 28640 KB n=500
49 Correct 14 ms 28640 KB n=500
50 Correct 13 ms 28576 KB n=500
51 Correct 15 ms 28588 KB n=500
52 Correct 15 ms 28636 KB n=500
53 Correct 16 ms 28640 KB n=500
54 Correct 14 ms 28668 KB n=500
55 Correct 15 ms 28636 KB n=278
56 Correct 18 ms 28640 KB n=500
57 Correct 16 ms 28548 KB n=500
58 Correct 14 ms 28640 KB n=500
59 Correct 20 ms 28896 KB n=2000
60 Correct 18 ms 29016 KB n=2000
61 Correct 20 ms 28928 KB n=2000
62 Correct 18 ms 28788 KB n=2000
63 Correct 20 ms 28776 KB n=2000
64 Correct 20 ms 28816 KB n=2000
65 Correct 20 ms 28804 KB n=2000
66 Correct 17 ms 28884 KB n=2000
67 Correct 18 ms 28824 KB n=2000
68 Correct 17 ms 28856 KB n=2000
69 Correct 16 ms 28796 KB n=2000
70 Correct 17 ms 28764 KB n=2000
71 Correct 18 ms 28900 KB n=2000
72 Correct 16 ms 28884 KB n=2000
73 Correct 17 ms 28828 KB n=2000
74 Correct 18 ms 28756 KB n=1844
75 Correct 16 ms 28896 KB n=2000
76 Correct 18 ms 28884 KB n=2000
77 Correct 18 ms 28824 KB n=2000
78 Correct 19 ms 28884 KB n=2000
79 Correct 21 ms 28884 KB n=2000
80 Correct 18 ms 28884 KB n=2000
81 Correct 18 ms 28884 KB n=2000
82 Correct 18 ms 28840 KB n=2000
83 Correct 18 ms 28896 KB n=2000
84 Correct 20 ms 28884 KB n=2000
85 Correct 18 ms 28884 KB n=2000
86 Correct 18 ms 28788 KB n=2000
87 Correct 18 ms 28880 KB n=2000
88 Correct 18 ms 28920 KB n=2000
89 Correct 17 ms 28884 KB n=2000
90 Correct 19 ms 28884 KB n=2000
91 Correct 23 ms 28884 KB n=2000
92 Correct 886 ms 68644 KB n=200000
93 Correct 833 ms 77244 KB n=200000
94 Correct 771 ms 81772 KB n=200000
95 Correct 908 ms 70696 KB n=200000
96 Correct 852 ms 70564 KB n=200000
97 Correct 883 ms 76048 KB n=200000
98 Correct 867 ms 70536 KB n=200000
99 Correct 1068 ms 70968 KB n=200000
100 Correct 1207 ms 70660 KB n=200000
101 Correct 858 ms 83416 KB n=200000
102 Correct 534 ms 71812 KB n=200000
103 Correct 561 ms 71772 KB n=200000
104 Correct 503 ms 71800 KB n=200000
105 Correct 506 ms 72252 KB n=200000
106 Correct 527 ms 72284 KB n=200000
107 Correct 508 ms 72208 KB n=200000
108 Correct 938 ms 70804 KB n=200000
109 Correct 1066 ms 70756 KB n=200000
110 Correct 1062 ms 70672 KB n=200000
111 Correct 964 ms 70096 KB n=200000
112 Correct 935 ms 82116 KB n=200000
113 Correct 936 ms 75944 KB n=200000
114 Correct 1050 ms 70124 KB n=200000
115 Correct 1035 ms 73248 KB n=200000
116 Correct 876 ms 70800 KB n=200000
117 Correct 742 ms 82552 KB n=200000
118 Correct 1010 ms 74592 KB n=200000
119 Correct 859 ms 70764 KB n=200000
120 Correct 891 ms 82424 KB n=200000
121 Correct 868 ms 82360 KB n=200000
122 Correct 859 ms 82728 KB n=200000
123 Correct 608 ms 72036 KB n=200000
124 Correct 305 ms 42648 KB n=25264