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Submission #368239

# Submission time Handle Problem Language Result Execution time Memory
368239 2021-02-19T20:15:08 Z nicolaalexandra Birthday gift (IZhO18_treearray) C++14
100 / 100
 1465 ms 132016 KB 
#include <bits/stdc++.h>
#define DIM 200010
using namespace std;

vector <int> L[DIM];
pair <int,int> rmq[20][DIM*3];
set <int> s[DIM],s2[DIM];
int E[DIM*3],p[DIM*3],first[DIM],level[DIM],v[DIM];
int n,m,i,j,x,y,pos,val,q,k,tip,l,r;

void dfs (int nod, int tata){
    level[nod] = 1 + level[tata];
    E[++k] = nod;
    first[nod] = k;
    for (auto vecin : L[nod])
        if (vecin != tata){
            dfs (vecin,nod);
            E[++k] = nod;
        }
}

int get_lca (int x, int y){
    int posx = first[x], posy = first[y];
    if (posx > posy)
        swap (posx,posy);
    int nr = p[posy-posx+1];
    pair <int,int> sol = min (rmq[nr][posx],rmq[nr][posy-(1<<nr)+1]);
    return E[sol.second];
}

int main (){

    //ifstream cin ("date.in");
    //ofstream cout ("date.out");

    cin>>n>>m>>q;
    for (i=1;i<n;i++){
        cin>>x>>y;
        L[x].push_back(y);
        L[y].push_back(x);
    }

    dfs (1,0);

    for (i=1;i<=k;i++)
        rmq[0][i] = make_pair(level[E[i]],i);

    for (i=1;(1<<i)<=k;i++)
        for (j=1;j<=k;j++){
            rmq[i][j] = rmq[i-1][j];
            if (j + (1<<(i-1)) <= k && rmq[i-1][j + (1<<(i-1))].first < rmq[i][j].first)
                rmq[i][j] = rmq[i-1][j + (1<<(i-1))];
        }

    for (i=2;i<=k;i++)
        p[i] = p[i/2] + 1;

    for (i=1;i<=m;i++){
        cin>>v[i];
        s2[v[i]].insert(i);
    }

    for (i=1;i<m;i++){
        int lca = get_lca (v[i],v[i+1]);
        s[lca].insert(i);
    }

    for (;q--;){
        cin>>tip;
        if (tip == 1){
            cin>>pos>>val;

            if (pos > 1){
                int lca = get_lca (v[pos-1],v[pos]);
                s[lca].erase(pos-1);
            }
            if (pos < m){
                int lca = get_lca (v[pos],v[pos+1]);
                s[lca].erase(pos);
            }

            s2[v[pos]].erase(pos);

            v[pos] = val;

            s2[v[pos]].insert(pos);

            if (pos > 1){
                int lca = get_lca (v[pos-1],v[pos]);
                s[lca].insert(pos-1);
            }
            if (pos < m){
                int lca = get_lca (v[pos],v[pos+1]);
                s[lca].insert(pos);
            }

        } else {
            cin>>l>>r>>val;

            set <int> :: iterator it = s2[val].lower_bound(l);

            if (it != s2[val].end() && *it <= r){
                cout<<(*it)<<" "<<(*it)<<"\n";
                continue;
            }


            it = s[val].lower_bound(l);
            pos = *it;
            if (it == s[val].end() || *it >= r)
                cout<<"-1 -1\n";
            else cout<<(*it)<<" "<<(*it)+1<<"\n";

        }
    }

    return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23916 KB n=5
2 Correct 17 ms 23916 KB n=100
3 Correct 17 ms 23916 KB n=100
4 Correct 19 ms 23916 KB n=100
5 Correct 17 ms 23916 KB n=100
6 Correct 17 ms 23916 KB n=100
7 Correct 19 ms 23916 KB n=100
8 Correct 16 ms 23916 KB n=100
9 Correct 16 ms 23916 KB n=100
10 Correct 18 ms 23916 KB n=100
11 Correct 16 ms 23916 KB n=100
12 Correct 17 ms 23916 KB n=100
13 Correct 16 ms 23916 KB n=100
14 Correct 16 ms 23916 KB n=100
15 Correct 16 ms 23916 KB n=100
16 Correct 16 ms 23916 KB n=100
17 Correct 16 ms 23916 KB n=100
18 Correct 18 ms 23916 KB n=100
19 Correct 20 ms 23916 KB n=100
20 Correct 17 ms 23916 KB n=100
21 Correct 17 ms 23916 KB n=100
22 Correct 16 ms 23916 KB n=100
23 Correct 19 ms 23916 KB n=100
24 Correct 16 ms 23916 KB n=100
25 Correct 17 ms 23916 KB n=100
26 Correct 19 ms 23916 KB n=12
27 Correct 19 ms 23916 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23916 KB n=5
2 Correct 17 ms 23916 KB n=100
3 Correct 17 ms 23916 KB n=100
4 Correct 19 ms 23916 KB n=100
5 Correct 17 ms 23916 KB n=100
6 Correct 17 ms 23916 KB n=100
7 Correct 19 ms 23916 KB n=100
8 Correct 16 ms 23916 KB n=100
9 Correct 16 ms 23916 KB n=100
10 Correct 18 ms 23916 KB n=100
11 Correct 16 ms 23916 KB n=100
12 Correct 17 ms 23916 KB n=100
13 Correct 16 ms 23916 KB n=100
14 Correct 16 ms 23916 KB n=100
15 Correct 16 ms 23916 KB n=100
16 Correct 16 ms 23916 KB n=100
17 Correct 16 ms 23916 KB n=100
18 Correct 18 ms 23916 KB n=100
19 Correct 20 ms 23916 KB n=100
20 Correct 17 ms 23916 KB n=100
21 Correct 17 ms 23916 KB n=100
22 Correct 16 ms 23916 KB n=100
23 Correct 19 ms 23916 KB n=100
24 Correct 16 ms 23916 KB n=100
25 Correct 17 ms 23916 KB n=100
26 Correct 19 ms 23916 KB n=12
27 Correct 19 ms 23916 KB n=100
28 Correct 20 ms 24044 KB n=500
29 Correct 18 ms 24044 KB n=500
30 Correct 18 ms 24044 KB n=500
31 Correct 20 ms 24044 KB n=500
32 Correct 18 ms 24044 KB n=500
33 Correct 18 ms 24044 KB n=500
34 Correct 21 ms 24044 KB n=500
35 Correct 18 ms 24044 KB n=500
36 Correct 18 ms 24044 KB n=500
37 Correct 20 ms 24300 KB n=500
38 Correct 18 ms 24044 KB n=500
39 Correct 18 ms 24044 KB n=500
40 Correct 18 ms 24044 KB n=500
41 Correct 19 ms 24064 KB n=500
42 Correct 19 ms 24308 KB n=500
43 Correct 18 ms 24044 KB n=500
44 Correct 18 ms 24044 KB n=500
45 Correct 18 ms 24044 KB n=500
46 Correct 18 ms 24192 KB n=500
47 Correct 19 ms 24044 KB n=500
48 Correct 19 ms 24172 KB n=500
49 Correct 21 ms 24044 KB n=500
50 Correct 22 ms 24044 KB n=500
51 Correct 18 ms 24044 KB n=500
52 Correct 18 ms 24172 KB n=500
53 Correct 19 ms 24044 KB n=500
54 Correct 18 ms 24044 KB n=500
55 Correct 20 ms 24044 KB n=278
56 Correct 18 ms 24044 KB n=500
57 Correct 18 ms 24044 KB n=500
58 Correct 19 ms 24044 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23916 KB n=5
2 Correct 17 ms 23916 KB n=100
3 Correct 17 ms 23916 KB n=100
4 Correct 19 ms 23916 KB n=100
5 Correct 17 ms 23916 KB n=100
6 Correct 17 ms 23916 KB n=100
7 Correct 19 ms 23916 KB n=100
8 Correct 16 ms 23916 KB n=100
9 Correct 16 ms 23916 KB n=100
10 Correct 18 ms 23916 KB n=100
11 Correct 16 ms 23916 KB n=100
12 Correct 17 ms 23916 KB n=100
13 Correct 16 ms 23916 KB n=100
14 Correct 16 ms 23916 KB n=100
15 Correct 16 ms 23916 KB n=100
16 Correct 16 ms 23916 KB n=100
17 Correct 16 ms 23916 KB n=100
18 Correct 18 ms 23916 KB n=100
19 Correct 20 ms 23916 KB n=100
20 Correct 17 ms 23916 KB n=100
21 Correct 17 ms 23916 KB n=100
22 Correct 16 ms 23916 KB n=100
23 Correct 19 ms 23916 KB n=100
24 Correct 16 ms 23916 KB n=100
25 Correct 17 ms 23916 KB n=100
26 Correct 19 ms 23916 KB n=12
27 Correct 19 ms 23916 KB n=100
28 Correct 20 ms 24044 KB n=500
29 Correct 18 ms 24044 KB n=500
30 Correct 18 ms 24044 KB n=500
31 Correct 20 ms 24044 KB n=500
32 Correct 18 ms 24044 KB n=500
33 Correct 18 ms 24044 KB n=500
34 Correct 21 ms 24044 KB n=500
35 Correct 18 ms 24044 KB n=500
36 Correct 18 ms 24044 KB n=500
37 Correct 20 ms 24300 KB n=500
38 Correct 18 ms 24044 KB n=500
39 Correct 18 ms 24044 KB n=500
40 Correct 18 ms 24044 KB n=500
41 Correct 19 ms 24064 KB n=500
42 Correct 19 ms 24308 KB n=500
43 Correct 18 ms 24044 KB n=500
44 Correct 18 ms 24044 KB n=500
45 Correct 18 ms 24044 KB n=500
46 Correct 18 ms 24192 KB n=500
47 Correct 19 ms 24044 KB n=500
48 Correct 19 ms 24172 KB n=500
49 Correct 21 ms 24044 KB n=500
50 Correct 22 ms 24044 KB n=500
51 Correct 18 ms 24044 KB n=500
52 Correct 18 ms 24172 KB n=500
53 Correct 19 ms 24044 KB n=500
54 Correct 18 ms 24044 KB n=500
55 Correct 20 ms 24044 KB n=278
56 Correct 18 ms 24044 KB n=500
57 Correct 18 ms 24044 KB n=500
58 Correct 19 ms 24044 KB n=500
59 Correct 24 ms 24684 KB n=2000
60 Correct 25 ms 24812 KB n=2000
61 Correct 28 ms 24684 KB n=2000
62 Correct 24 ms 24684 KB n=2000
63 Correct 25 ms 24684 KB n=2000
64 Correct 24 ms 24684 KB n=2000
65 Correct 29 ms 24684 KB n=2000
66 Correct 29 ms 24812 KB n=2000
67 Correct 24 ms 24684 KB n=2000
68 Correct 24 ms 24684 KB n=2000
69 Correct 26 ms 24684 KB n=2000
70 Correct 29 ms 24684 KB n=2000
71 Correct 26 ms 24684 KB n=2000
72 Correct 26 ms 24684 KB n=2000
73 Correct 28 ms 24684 KB n=2000
74 Correct 23 ms 24684 KB n=1844
75 Correct 25 ms 24684 KB n=2000
76 Correct 24 ms 24812 KB n=2000
77 Correct 24 ms 24684 KB n=2000
78 Correct 24 ms 24684 KB n=2000
79 Correct 24 ms 24684 KB n=2000
80 Correct 24 ms 24812 KB n=2000
81 Correct 25 ms 24684 KB n=2000
82 Correct 24 ms 24684 KB n=2000
83 Correct 24 ms 24812 KB n=2000
84 Correct 31 ms 24684 KB n=2000
85 Correct 28 ms 24684 KB n=2000
86 Correct 24 ms 24684 KB n=2000
87 Correct 24 ms 24684 KB n=2000
88 Correct 26 ms 24812 KB n=2000
89 Correct 27 ms 24812 KB n=2000
90 Correct 27 ms 24812 KB n=2000
91 Correct 26 ms 24684 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23916 KB n=5
2 Correct 17 ms 23916 KB n=100
3 Correct 17 ms 23916 KB n=100
4 Correct 19 ms 23916 KB n=100
5 Correct 17 ms 23916 KB n=100
6 Correct 17 ms 23916 KB n=100
7 Correct 19 ms 23916 KB n=100
8 Correct 16 ms 23916 KB n=100
9 Correct 16 ms 23916 KB n=100
10 Correct 18 ms 23916 KB n=100
11 Correct 16 ms 23916 KB n=100
12 Correct 17 ms 23916 KB n=100
13 Correct 16 ms 23916 KB n=100
14 Correct 16 ms 23916 KB n=100
15 Correct 16 ms 23916 KB n=100
16 Correct 16 ms 23916 KB n=100
17 Correct 16 ms 23916 KB n=100
18 Correct 18 ms 23916 KB n=100
19 Correct 20 ms 23916 KB n=100
20 Correct 17 ms 23916 KB n=100
21 Correct 17 ms 23916 KB n=100
22 Correct 16 ms 23916 KB n=100
23 Correct 19 ms 23916 KB n=100
24 Correct 16 ms 23916 KB n=100
25 Correct 17 ms 23916 KB n=100
26 Correct 19 ms 23916 KB n=12
27 Correct 19 ms 23916 KB n=100
28 Correct 20 ms 24044 KB n=500
29 Correct 18 ms 24044 KB n=500
30 Correct 18 ms 24044 KB n=500
31 Correct 20 ms 24044 KB n=500
32 Correct 18 ms 24044 KB n=500
33 Correct 18 ms 24044 KB n=500
34 Correct 21 ms 24044 KB n=500
35 Correct 18 ms 24044 KB n=500
36 Correct 18 ms 24044 KB n=500
37 Correct 20 ms 24300 KB n=500
38 Correct 18 ms 24044 KB n=500
39 Correct 18 ms 24044 KB n=500
40 Correct 18 ms 24044 KB n=500
41 Correct 19 ms 24064 KB n=500
42 Correct 19 ms 24308 KB n=500
43 Correct 18 ms 24044 KB n=500
44 Correct 18 ms 24044 KB n=500
45 Correct 18 ms 24044 KB n=500
46 Correct 18 ms 24192 KB n=500
47 Correct 19 ms 24044 KB n=500
48 Correct 19 ms 24172 KB n=500
49 Correct 21 ms 24044 KB n=500
50 Correct 22 ms 24044 KB n=500
51 Correct 18 ms 24044 KB n=500
52 Correct 18 ms 24172 KB n=500
53 Correct 19 ms 24044 KB n=500
54 Correct 18 ms 24044 KB n=500
55 Correct 20 ms 24044 KB n=278
56 Correct 18 ms 24044 KB n=500
57 Correct 18 ms 24044 KB n=500
58 Correct 19 ms 24044 KB n=500
59 Correct 24 ms 24684 KB n=2000
60 Correct 25 ms 24812 KB n=2000
61 Correct 28 ms 24684 KB n=2000
62 Correct 24 ms 24684 KB n=2000
63 Correct 25 ms 24684 KB n=2000
64 Correct 24 ms 24684 KB n=2000
65 Correct 29 ms 24684 KB n=2000
66 Correct 29 ms 24812 KB n=2000
67 Correct 24 ms 24684 KB n=2000
68 Correct 24 ms 24684 KB n=2000
69 Correct 26 ms 24684 KB n=2000
70 Correct 29 ms 24684 KB n=2000
71 Correct 26 ms 24684 KB n=2000
72 Correct 26 ms 24684 KB n=2000
73 Correct 28 ms 24684 KB n=2000
74 Correct 23 ms 24684 KB n=1844
75 Correct 25 ms 24684 KB n=2000
76 Correct 24 ms 24812 KB n=2000
77 Correct 24 ms 24684 KB n=2000
78 Correct 24 ms 24684 KB n=2000
79 Correct 24 ms 24684 KB n=2000
80 Correct 24 ms 24812 KB n=2000
81 Correct 25 ms 24684 KB n=2000
82 Correct 24 ms 24684 KB n=2000
83 Correct 24 ms 24812 KB n=2000
84 Correct 31 ms 24684 KB n=2000
85 Correct 28 ms 24684 KB n=2000
86 Correct 24 ms 24684 KB n=2000
87 Correct 24 ms 24684 KB n=2000
88 Correct 26 ms 24812 KB n=2000
89 Correct 27 ms 24812 KB n=2000
90 Correct 27 ms 24812 KB n=2000
91 Correct 26 ms 24684 KB n=2000
92 Correct 1399 ms 122628 KB n=200000
93 Correct 1410 ms 127552 KB n=200000
94 Correct 1349 ms 130668 KB n=200000
95 Correct 1365 ms 122336 KB n=200000
96 Correct 1405 ms 122460 KB n=200000
97 Correct 1420 ms 126444 KB n=200000
98 Correct 1367 ms 122336 KB n=200000
99 Correct 1465 ms 122840 KB n=200000
100 Correct 1406 ms 122508 KB n=200000
101 Correct 1334 ms 132016 KB n=200000
102 Correct 1238 ms 123628 KB n=200000
103 Correct 1160 ms 123640 KB n=200000
104 Correct 1233 ms 123676 KB n=200000
105 Correct 1248 ms 123952 KB n=200000
106 Correct 1221 ms 124012 KB n=200000
107 Correct 1222 ms 124028 KB n=200000
108 Correct 1379 ms 122476 KB n=200000
109 Correct 1307 ms 122328 KB n=200000
110 Correct 1356 ms 122348 KB n=200000
111 Correct 1410 ms 121880 KB n=200000
112 Correct 1317 ms 131052 KB n=200000
113 Correct 1391 ms 126692 KB n=200000
114 Correct 1338 ms 121952 KB n=200000
115 Correct 1442 ms 124428 KB n=200000
116 Correct 1325 ms 122592 KB n=200000
117 Correct 1277 ms 131308 KB n=200000
118 Correct 1415 ms 125376 KB n=200000
119 Correct 1295 ms 122592 KB n=200000
120 Correct 1235 ms 130924 KB n=200000
121 Correct 1223 ms 131380 KB n=200000
122 Correct 1211 ms 131436 KB n=200000
123 Correct 1165 ms 123804 KB n=200000
124 Correct 427 ms 44012 KB n=25264