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Submission #874900

# Submission time Handle Problem Language Result Execution time Memory
874900 2023-11-18T04:59:20 Z 12345678 Birthday gift (IZhO18_treearray) C++17
56 / 100
 171 ms 1052 KB 
#include <bits/stdc++.h>

using namespace std;

const int nx=2e3+5, kx=11;
int n, m, q, u, v, lvl[nx], pa[nx][kx], t, l, r, vl, x;
vector<int> d[nx], a(nx);

void dfs(int u, int p)
{
    lvl[u]=lvl[p]+1;
    pa[u][0]=p;
    for (int i=1; i<kx; i++) pa[u][i]=pa[pa[u][i-1]][i-1];
    for (auto v:d[u]) if (v!=p) dfs(v, u);
}

int lca(int u, int v)
{
    if (lvl[u]>lvl[v]) swap(u, v);
    for (int i=kx-1; i>=0; i--) if (lvl[pa[v][i]]>=lvl[u]) v=pa[v][i];
    if (u==v) return u;
    for (int i=kx-1; i>=0; i--) if (pa[u][i]!=pa[v][i]) u=pa[u][i], v=pa[v][i];
    return pa[u][0];
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>m>>q;
    for (int i=0; i<n-1; i++) cin>>u>>v, d[u].push_back(v), d[v].push_back(u);
    dfs(1, 1);
    for (int i=1; i<=m; i++) cin>>a[i];
    while (q--)
    {
        cin>>t;
        if (t==1) cin>>x>>vl, a[x]=vl;
        else
        {
            cin>>l>>r>>vl;
            int c=-1, idx=l;
            for (int i=l; i<=r; i++)
            {
                if (c==-1) c=a[i];
                else c=lca(c, a[i]);
                if (c==vl)
                {
                    cout<<idx<<' '<<i<<'\n';
                    break;
                }
                if (lca(c, vl)!=vl) c=-1, idx=i+1;
                if (i==r) cout<<-1<<' '<<-1<<'\n';
            }
        }
    }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB n=5
2 Correct 1 ms 348 KB n=100
3 Correct 1 ms 348 KB n=100
4 Correct 0 ms 348 KB n=100
5 Correct 0 ms 348 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 1 ms 516 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 1 ms 348 KB n=100
10 Correct 1 ms 344 KB n=100
11 Correct 1 ms 344 KB n=100
12 Correct 0 ms 348 KB n=100
13 Correct 1 ms 348 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 0 ms 348 KB n=100
16 Correct 1 ms 348 KB n=100
17 Correct 0 ms 348 KB n=100
18 Correct 0 ms 348 KB n=100
19 Correct 0 ms 348 KB n=100
20 Correct 0 ms 348 KB n=100
21 Correct 1 ms 348 KB n=100
22 Correct 0 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB n=5
2 Correct 1 ms 348 KB n=100
3 Correct 1 ms 348 KB n=100
4 Correct 0 ms 348 KB n=100
5 Correct 0 ms 348 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 1 ms 516 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 1 ms 348 KB n=100
10 Correct 1 ms 344 KB n=100
11 Correct 1 ms 344 KB n=100
12 Correct 0 ms 348 KB n=100
13 Correct 1 ms 348 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 0 ms 348 KB n=100
16 Correct 1 ms 348 KB n=100
17 Correct 0 ms 348 KB n=100
18 Correct 0 ms 348 KB n=100
19 Correct 0 ms 348 KB n=100
20 Correct 0 ms 348 KB n=100
21 Correct 1 ms 348 KB n=100
22 Correct 0 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Correct 1 ms 348 KB n=500
29 Correct 2 ms 348 KB n=500
30 Correct 2 ms 348 KB n=500
31 Correct 2 ms 348 KB n=500
32 Correct 1 ms 348 KB n=500
33 Correct 2 ms 348 KB n=500
34 Correct 1 ms 348 KB n=500
35 Correct 2 ms 528 KB n=500
36 Correct 11 ms 524 KB n=500
37 Correct 11 ms 348 KB n=500
38 Correct 11 ms 572 KB n=500
39 Correct 6 ms 348 KB n=500
40 Correct 7 ms 792 KB n=500
41 Correct 6 ms 344 KB n=500
42 Correct 6 ms 348 KB n=500
43 Correct 6 ms 348 KB n=500
44 Correct 6 ms 348 KB n=500
45 Correct 1 ms 348 KB n=500
46 Correct 2 ms 348 KB n=500
47 Correct 2 ms 348 KB n=500
48 Correct 1 ms 344 KB n=500
49 Correct 2 ms 344 KB n=500
50 Correct 3 ms 348 KB n=500
51 Correct 3 ms 348 KB n=500
52 Correct 3 ms 344 KB n=500
53 Correct 3 ms 348 KB n=500
54 Correct 5 ms 524 KB n=500
55 Correct 1 ms 348 KB n=278
56 Correct 9 ms 348 KB n=500
57 Correct 9 ms 600 KB n=500
58 Correct 9 ms 344 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB n=5
2 Correct 1 ms 348 KB n=100
3 Correct 1 ms 348 KB n=100
4 Correct 0 ms 348 KB n=100
5 Correct 0 ms 348 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 1 ms 516 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 1 ms 348 KB n=100
10 Correct 1 ms 344 KB n=100
11 Correct 1 ms 344 KB n=100
12 Correct 0 ms 348 KB n=100
13 Correct 1 ms 348 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 0 ms 348 KB n=100
16 Correct 1 ms 348 KB n=100
17 Correct 0 ms 348 KB n=100
18 Correct 0 ms 348 KB n=100
19 Correct 0 ms 348 KB n=100
20 Correct 0 ms 348 KB n=100
21 Correct 1 ms 348 KB n=100
22 Correct 0 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Correct 1 ms 348 KB n=500
29 Correct 2 ms 348 KB n=500
30 Correct 2 ms 348 KB n=500
31 Correct 2 ms 348 KB n=500
32 Correct 1 ms 348 KB n=500
33 Correct 2 ms 348 KB n=500
34 Correct 1 ms 348 KB n=500
35 Correct 2 ms 528 KB n=500
36 Correct 11 ms 524 KB n=500
37 Correct 11 ms 348 KB n=500
38 Correct 11 ms 572 KB n=500
39 Correct 6 ms 348 KB n=500
40 Correct 7 ms 792 KB n=500
41 Correct 6 ms 344 KB n=500
42 Correct 6 ms 348 KB n=500
43 Correct 6 ms 348 KB n=500
44 Correct 6 ms 348 KB n=500
45 Correct 1 ms 348 KB n=500
46 Correct 2 ms 348 KB n=500
47 Correct 2 ms 348 KB n=500
48 Correct 1 ms 344 KB n=500
49 Correct 2 ms 344 KB n=500
50 Correct 3 ms 348 KB n=500
51 Correct 3 ms 348 KB n=500
52 Correct 3 ms 344 KB n=500
53 Correct 3 ms 348 KB n=500
54 Correct 5 ms 524 KB n=500
55 Correct 1 ms 348 KB n=278
56 Correct 9 ms 348 KB n=500
57 Correct 9 ms 600 KB n=500
58 Correct 9 ms 344 KB n=500
59 Correct 2 ms 600 KB n=2000
60 Correct 26 ms 604 KB n=2000
61 Correct 26 ms 752 KB n=2000
62 Correct 19 ms 604 KB n=2000
63 Correct 2 ms 600 KB n=2000
64 Correct 25 ms 668 KB n=2000
65 Correct 2 ms 604 KB n=2000
66 Correct 28 ms 604 KB n=2000
67 Correct 3 ms 604 KB n=2000
68 Correct 30 ms 600 KB n=2000
69 Correct 171 ms 604 KB n=2000
70 Correct 171 ms 716 KB n=2000
71 Correct 171 ms 604 KB n=2000
72 Correct 89 ms 604 KB n=2000
73 Correct 87 ms 600 KB n=2000
74 Correct 1 ms 604 KB n=1844
75 Correct 90 ms 604 KB n=2000
76 Correct 91 ms 848 KB n=2000
77 Correct 88 ms 704 KB n=2000
78 Correct 93 ms 600 KB n=2000
79 Correct 1 ms 604 KB n=2000
80 Correct 23 ms 796 KB n=2000
81 Correct 22 ms 604 KB n=2000
82 Correct 1 ms 600 KB n=2000
83 Correct 23 ms 780 KB n=2000
84 Correct 47 ms 604 KB n=2000
85 Correct 45 ms 600 KB n=2000
86 Correct 49 ms 604 KB n=2000
87 Correct 50 ms 728 KB n=2000
88 Correct 160 ms 600 KB n=2000
89 Correct 154 ms 600 KB n=2000
90 Correct 78 ms 784 KB n=2000
91 Correct 135 ms 1052 KB n=2000

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB n=5
2 Correct 1 ms 348 KB n=100
3 Correct 1 ms 348 KB n=100
4 Correct 0 ms 348 KB n=100
5 Correct 0 ms 348 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 1 ms 516 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 1 ms 348 KB n=100
10 Correct 1 ms 344 KB n=100
11 Correct 1 ms 344 KB n=100
12 Correct 0 ms 348 KB n=100
13 Correct 1 ms 348 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 0 ms 348 KB n=100
16 Correct 1 ms 348 KB n=100
17 Correct 0 ms 348 KB n=100
18 Correct 0 ms 348 KB n=100
19 Correct 0 ms 348 KB n=100
20 Correct 0 ms 348 KB n=100
21 Correct 1 ms 348 KB n=100
22 Correct 0 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Correct 1 ms 348 KB n=500
29 Correct 2 ms 348 KB n=500
30 Correct 2 ms 348 KB n=500
31 Correct 2 ms 348 KB n=500
32 Correct 1 ms 348 KB n=500
33 Correct 2 ms 348 KB n=500
34 Correct 1 ms 348 KB n=500
35 Correct 2 ms 528 KB n=500
36 Correct 11 ms 524 KB n=500
37 Correct 11 ms 348 KB n=500
38 Correct 11 ms 572 KB n=500
39 Correct 6 ms 348 KB n=500
40 Correct 7 ms 792 KB n=500
41 Correct 6 ms 344 KB n=500
42 Correct 6 ms 348 KB n=500
43 Correct 6 ms 348 KB n=500
44 Correct 6 ms 348 KB n=500
45 Correct 1 ms 348 KB n=500
46 Correct 2 ms 348 KB n=500
47 Correct 2 ms 348 KB n=500
48 Correct 1 ms 344 KB n=500
49 Correct 2 ms 344 KB n=500
50 Correct 3 ms 348 KB n=500
51 Correct 3 ms 348 KB n=500
52 Correct 3 ms 344 KB n=500
53 Correct 3 ms 348 KB n=500
54 Correct 5 ms 524 KB n=500
55 Correct 1 ms 348 KB n=278
56 Correct 9 ms 348 KB n=500
57 Correct 9 ms 600 KB n=500
58 Correct 9 ms 344 KB n=500
59 Correct 2 ms 600 KB n=2000
60 Correct 26 ms 604 KB n=2000
61 Correct 26 ms 752 KB n=2000
62 Correct 19 ms 604 KB n=2000
63 Correct 2 ms 600 KB n=2000
64 Correct 25 ms 668 KB n=2000
65 Correct 2 ms 604 KB n=2000
66 Correct 28 ms 604 KB n=2000
67 Correct 3 ms 604 KB n=2000
68 Correct 30 ms 600 KB n=2000
69 Correct 171 ms 604 KB n=2000
70 Correct 171 ms 716 KB n=2000
71 Correct 171 ms 604 KB n=2000
72 Correct 89 ms 604 KB n=2000
73 Correct 87 ms 600 KB n=2000
74 Correct 1 ms 604 KB n=1844
75 Correct 90 ms 604 KB n=2000
76 Correct 91 ms 848 KB n=2000
77 Correct 88 ms 704 KB n=2000
78 Correct 93 ms 600 KB n=2000
79 Correct 1 ms 604 KB n=2000
80 Correct 23 ms 796 KB n=2000
81 Correct 22 ms 604 KB n=2000
82 Correct 1 ms 600 KB n=2000
83 Correct 23 ms 780 KB n=2000
84 Correct 47 ms 604 KB n=2000
85 Correct 45 ms 600 KB n=2000
86 Correct 49 ms 604 KB n=2000
87 Correct 50 ms 728 KB n=2000
88 Correct 160 ms 600 KB n=2000
89 Correct 154 ms 600 KB n=2000
90 Correct 78 ms 784 KB n=2000
91 Correct 135 ms 1052 KB n=2000
92 Runtime error 1 ms 540 KB Execution killed with signal 11
93 Halted 0 ms 0 KB -