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Submission #42294

# Submission time Handle Problem Language Result Execution time Memory
42294 2018-02-25T15:09:12 Z minhtung0404 Birthday gift (IZhO18_treearray) C++14
100 / 100
 1549 ms 113576 KB 
//https://oj.uz/problem/view/IZhO18_treearray

#include<bits/stdc++.h>
const int N = 2e5 + 5;
using namespace std;

vector <int> adj[N];
set <int> ans[2][N];

int n, m, q, a[N], p[N][20], d[N];

void dfs(int u){
    for (int i = 0; i < (int)adj[u].size(); i++){
        int v = adj[u][i];
        if (v == p[u][0]) continue;
        d[v] = d[u] + 1; p[v][0] = u;
        dfs(v);
    }
}

int lca(int u, int v){
    if (d[u] < d[v]) swap(u, v);
    for (int i = 19; i >= 0; i--) if (d[u] - (1 << i) >= d[v]) u = p[u][i];
    for (int i = 19; i >= 0; i--) if (p[u][i] != p[v][i]) u = p[u][i], v = p[v][i];
    return ((u != v) ? p[u][0] : u);
}

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> n >> m >> q;
    for (int i = 2; i <= n; i++){
        int u, v; cin >> u >> v;
        adj[u].push_back(v); adj[v].push_back(u);
    }
    dfs(1);
    for (int i = 1; i < 20; 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++) cin >> a[i];
    for (int i = 1; i <= m; i++) ans[0][a[i]].insert(i);
    for (int i = 1; i <  m; i++) ans[1][lca(a[i], a[i+1])].insert(i);
    while (q--){
        int type;
        cin >> type;
        if (type == 1){
            int pos, v;
            cin >> pos >> v;
            ans[0][a[pos]].erase(pos);
            if (pos > 1) ans[1][lca(a[pos-1], a[pos])].erase(pos-1);
            if (pos < m) ans[1][lca(a[pos], a[pos+1])].erase(pos);
            a[pos] = v;
            ans[0][a[pos]].insert(pos);
            if (pos > 1) ans[1][lca(a[pos-1], a[pos])].insert(pos-1);
            if (pos < m) ans[1][lca(a[pos], a[pos+1])].insert(pos);
        }
        else{
            int l, r, v;
            cin >> l >> r >> v;
            set <int> ::iterator it = ans[0][v].lower_bound(l);
            if (it != ans[0][v].end() && *it <= r) {
                cout << *it << " " << *it << "\n";
                continue;
            }
            it = ans[1][v].lower_bound(l);
            if (it != ans[1][v].end() && *it < r){
                cout << *it << " " << (*it)+1 << "\n";
                continue;
            }
            cout << "-1 -1\n";
        }
    }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 23800 KB n=5
2 Correct 22 ms 24036 KB n=100
3 Correct 21 ms 24036 KB n=100
4 Correct 20 ms 24036 KB n=100
5 Correct 23 ms 24036 KB n=100
6 Correct 23 ms 24036 KB n=100
7 Correct 22 ms 24036 KB n=100
8 Correct 21 ms 24036 KB n=100
9 Correct 21 ms 24036 KB n=100
10 Correct 22 ms 24036 KB n=100
11 Correct 20 ms 24036 KB n=100
12 Correct 21 ms 24128 KB n=100
13 Correct 22 ms 24128 KB n=100
14 Correct 20 ms 24128 KB n=100
15 Correct 21 ms 24128 KB n=100
16 Correct 20 ms 24128 KB n=100
17 Correct 21 ms 24128 KB n=100
18 Correct 21 ms 24128 KB n=100
19 Correct 22 ms 24128 KB n=100
20 Correct 21 ms 24128 KB n=100
21 Correct 22 ms 24128 KB n=100
22 Correct 22 ms 24128 KB n=100
23 Correct 22 ms 24128 KB n=100
24 Correct 21 ms 24128 KB n=100
25 Correct 27 ms 24128 KB n=100
26 Correct 20 ms 24128 KB n=12
27 Correct 20 ms 24132 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 23800 KB n=5
2 Correct 22 ms 24036 KB n=100
3 Correct 21 ms 24036 KB n=100
4 Correct 20 ms 24036 KB n=100
5 Correct 23 ms 24036 KB n=100
6 Correct 23 ms 24036 KB n=100
7 Correct 22 ms 24036 KB n=100
8 Correct 21 ms 24036 KB n=100
9 Correct 21 ms 24036 KB n=100
10 Correct 22 ms 24036 KB n=100
11 Correct 20 ms 24036 KB n=100
12 Correct 21 ms 24128 KB n=100
13 Correct 22 ms 24128 KB n=100
14 Correct 20 ms 24128 KB n=100
15 Correct 21 ms 24128 KB n=100
16 Correct 20 ms 24128 KB n=100
17 Correct 21 ms 24128 KB n=100
18 Correct 21 ms 24128 KB n=100
19 Correct 22 ms 24128 KB n=100
20 Correct 21 ms 24128 KB n=100
21 Correct 22 ms 24128 KB n=100
22 Correct 22 ms 24128 KB n=100
23 Correct 22 ms 24128 KB n=100
24 Correct 21 ms 24128 KB n=100
25 Correct 27 ms 24128 KB n=100
26 Correct 20 ms 24128 KB n=12
27 Correct 20 ms 24132 KB n=100
28 Correct 22 ms 24264 KB n=500
29 Correct 22 ms 24276 KB n=500
30 Correct 21 ms 24292 KB n=500
31 Correct 22 ms 24308 KB n=500
32 Correct 23 ms 24324 KB n=500
33 Correct 22 ms 24336 KB n=500
34 Correct 23 ms 24352 KB n=500
35 Correct 23 ms 24620 KB n=500
36 Correct 27 ms 24620 KB n=500
37 Correct 22 ms 24620 KB n=500
38 Correct 21 ms 24620 KB n=500
39 Correct 21 ms 24620 KB n=500
40 Correct 20 ms 24620 KB n=500
41 Correct 21 ms 24620 KB n=500
42 Correct 22 ms 24620 KB n=500
43 Correct 23 ms 24620 KB n=500
44 Correct 22 ms 24620 KB n=500
45 Correct 23 ms 24620 KB n=500
46 Correct 25 ms 24620 KB n=500
47 Correct 23 ms 24620 KB n=500
48 Correct 21 ms 24620 KB n=500
49 Correct 21 ms 24620 KB n=500
50 Correct 23 ms 24620 KB n=500
51 Correct 28 ms 24620 KB n=500
52 Correct 22 ms 24728 KB n=500
53 Correct 22 ms 24728 KB n=500
54 Correct 22 ms 24728 KB n=500
55 Correct 23 ms 24728 KB n=278
56 Correct 22 ms 24728 KB n=500
57 Correct 22 ms 24728 KB n=500
58 Correct 21 ms 24728 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 23800 KB n=5
2 Correct 22 ms 24036 KB n=100
3 Correct 21 ms 24036 KB n=100
4 Correct 20 ms 24036 KB n=100
5 Correct 23 ms 24036 KB n=100
6 Correct 23 ms 24036 KB n=100
7 Correct 22 ms 24036 KB n=100
8 Correct 21 ms 24036 KB n=100
9 Correct 21 ms 24036 KB n=100
10 Correct 22 ms 24036 KB n=100
11 Correct 20 ms 24036 KB n=100
12 Correct 21 ms 24128 KB n=100
13 Correct 22 ms 24128 KB n=100
14 Correct 20 ms 24128 KB n=100
15 Correct 21 ms 24128 KB n=100
16 Correct 20 ms 24128 KB n=100
17 Correct 21 ms 24128 KB n=100
18 Correct 21 ms 24128 KB n=100
19 Correct 22 ms 24128 KB n=100
20 Correct 21 ms 24128 KB n=100
21 Correct 22 ms 24128 KB n=100
22 Correct 22 ms 24128 KB n=100
23 Correct 22 ms 24128 KB n=100
24 Correct 21 ms 24128 KB n=100
25 Correct 27 ms 24128 KB n=100
26 Correct 20 ms 24128 KB n=12
27 Correct 20 ms 24132 KB n=100
28 Correct 22 ms 24264 KB n=500
29 Correct 22 ms 24276 KB n=500
30 Correct 21 ms 24292 KB n=500
31 Correct 22 ms 24308 KB n=500
32 Correct 23 ms 24324 KB n=500
33 Correct 22 ms 24336 KB n=500
34 Correct 23 ms 24352 KB n=500
35 Correct 23 ms 24620 KB n=500
36 Correct 27 ms 24620 KB n=500
37 Correct 22 ms 24620 KB n=500
38 Correct 21 ms 24620 KB n=500
39 Correct 21 ms 24620 KB n=500
40 Correct 20 ms 24620 KB n=500
41 Correct 21 ms 24620 KB n=500
42 Correct 22 ms 24620 KB n=500
43 Correct 23 ms 24620 KB n=500
44 Correct 22 ms 24620 KB n=500
45 Correct 23 ms 24620 KB n=500
46 Correct 25 ms 24620 KB n=500
47 Correct 23 ms 24620 KB n=500
48 Correct 21 ms 24620 KB n=500
49 Correct 21 ms 24620 KB n=500
50 Correct 23 ms 24620 KB n=500
51 Correct 28 ms 24620 KB n=500
52 Correct 22 ms 24728 KB n=500
53 Correct 22 ms 24728 KB n=500
54 Correct 22 ms 24728 KB n=500
55 Correct 23 ms 24728 KB n=278
56 Correct 22 ms 24728 KB n=500
57 Correct 22 ms 24728 KB n=500
58 Correct 21 ms 24728 KB n=500
59 Correct 27 ms 25076 KB n=2000
60 Correct 27 ms 25336 KB n=2000
61 Correct 25 ms 25336 KB n=2000
62 Correct 27 ms 25336 KB n=2000
63 Correct 27 ms 25336 KB n=2000
64 Correct 28 ms 25508 KB n=2000
65 Correct 26 ms 25508 KB n=2000
66 Correct 28 ms 25648 KB n=2000
67 Correct 27 ms 25648 KB n=2000
68 Correct 27 ms 25760 KB n=2000
69 Correct 28 ms 25760 KB n=2000
70 Correct 24 ms 25760 KB n=2000
71 Correct 27 ms 25784 KB n=2000
72 Correct 24 ms 25964 KB n=2000
73 Correct 23 ms 25964 KB n=2000
74 Correct 28 ms 25964 KB n=1844
75 Correct 25 ms 25992 KB n=2000
76 Correct 25 ms 26052 KB n=2000
77 Correct 25 ms 26136 KB n=2000
78 Correct 26 ms 26136 KB n=2000
79 Correct 26 ms 26136 KB n=2000
80 Correct 26 ms 26136 KB n=2000
81 Correct 26 ms 26136 KB n=2000
82 Correct 24 ms 26148 KB n=2000
83 Correct 27 ms 26148 KB n=2000
84 Correct 24 ms 26148 KB n=2000
85 Correct 24 ms 26148 KB n=2000
86 Correct 24 ms 26148 KB n=2000
87 Correct 24 ms 26148 KB n=2000
88 Correct 24 ms 26260 KB n=2000
89 Correct 24 ms 26260 KB n=2000
90 Correct 24 ms 26264 KB n=2000
91 Correct 22 ms 26264 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 23800 KB n=5
2 Correct 22 ms 24036 KB n=100
3 Correct 21 ms 24036 KB n=100
4 Correct 20 ms 24036 KB n=100
5 Correct 23 ms 24036 KB n=100
6 Correct 23 ms 24036 KB n=100
7 Correct 22 ms 24036 KB n=100
8 Correct 21 ms 24036 KB n=100
9 Correct 21 ms 24036 KB n=100
10 Correct 22 ms 24036 KB n=100
11 Correct 20 ms 24036 KB n=100
12 Correct 21 ms 24128 KB n=100
13 Correct 22 ms 24128 KB n=100
14 Correct 20 ms 24128 KB n=100
15 Correct 21 ms 24128 KB n=100
16 Correct 20 ms 24128 KB n=100
17 Correct 21 ms 24128 KB n=100
18 Correct 21 ms 24128 KB n=100
19 Correct 22 ms 24128 KB n=100
20 Correct 21 ms 24128 KB n=100
21 Correct 22 ms 24128 KB n=100
22 Correct 22 ms 24128 KB n=100
23 Correct 22 ms 24128 KB n=100
24 Correct 21 ms 24128 KB n=100
25 Correct 27 ms 24128 KB n=100
26 Correct 20 ms 24128 KB n=12
27 Correct 20 ms 24132 KB n=100
28 Correct 22 ms 24264 KB n=500
29 Correct 22 ms 24276 KB n=500
30 Correct 21 ms 24292 KB n=500
31 Correct 22 ms 24308 KB n=500
32 Correct 23 ms 24324 KB n=500
33 Correct 22 ms 24336 KB n=500
34 Correct 23 ms 24352 KB n=500
35 Correct 23 ms 24620 KB n=500
36 Correct 27 ms 24620 KB n=500
37 Correct 22 ms 24620 KB n=500
38 Correct 21 ms 24620 KB n=500
39 Correct 21 ms 24620 KB n=500
40 Correct 20 ms 24620 KB n=500
41 Correct 21 ms 24620 KB n=500
42 Correct 22 ms 24620 KB n=500
43 Correct 23 ms 24620 KB n=500
44 Correct 22 ms 24620 KB n=500
45 Correct 23 ms 24620 KB n=500
46 Correct 25 ms 24620 KB n=500
47 Correct 23 ms 24620 KB n=500
48 Correct 21 ms 24620 KB n=500
49 Correct 21 ms 24620 KB n=500
50 Correct 23 ms 24620 KB n=500
51 Correct 28 ms 24620 KB n=500
52 Correct 22 ms 24728 KB n=500
53 Correct 22 ms 24728 KB n=500
54 Correct 22 ms 24728 KB n=500
55 Correct 23 ms 24728 KB n=278
56 Correct 22 ms 24728 KB n=500
57 Correct 22 ms 24728 KB n=500
58 Correct 21 ms 24728 KB n=500
59 Correct 27 ms 25076 KB n=2000
60 Correct 27 ms 25336 KB n=2000
61 Correct 25 ms 25336 KB n=2000
62 Correct 27 ms 25336 KB n=2000
63 Correct 27 ms 25336 KB n=2000
64 Correct 28 ms 25508 KB n=2000
65 Correct 26 ms 25508 KB n=2000
66 Correct 28 ms 25648 KB n=2000
67 Correct 27 ms 25648 KB n=2000
68 Correct 27 ms 25760 KB n=2000
69 Correct 28 ms 25760 KB n=2000
70 Correct 24 ms 25760 KB n=2000
71 Correct 27 ms 25784 KB n=2000
72 Correct 24 ms 25964 KB n=2000
73 Correct 23 ms 25964 KB n=2000
74 Correct 28 ms 25964 KB n=1844
75 Correct 25 ms 25992 KB n=2000
76 Correct 25 ms 26052 KB n=2000
77 Correct 25 ms 26136 KB n=2000
78 Correct 26 ms 26136 KB n=2000
79 Correct 26 ms 26136 KB n=2000
80 Correct 26 ms 26136 KB n=2000
81 Correct 26 ms 26136 KB n=2000
82 Correct 24 ms 26148 KB n=2000
83 Correct 27 ms 26148 KB n=2000
84 Correct 24 ms 26148 KB n=2000
85 Correct 24 ms 26148 KB n=2000
86 Correct 24 ms 26148 KB n=2000
87 Correct 24 ms 26148 KB n=2000
88 Correct 24 ms 26260 KB n=2000
89 Correct 24 ms 26260 KB n=2000
90 Correct 24 ms 26264 KB n=2000
91 Correct 22 ms 26264 KB n=2000
92 Correct 949 ms 70048 KB n=200000
93 Correct 1407 ms 84440 KB n=200000
94 Correct 1373 ms 97840 KB n=200000
95 Correct 982 ms 97840 KB n=200000
96 Correct 922 ms 98076 KB n=200000
97 Correct 1377 ms 103992 KB n=200000
98 Correct 929 ms 103992 KB n=200000
99 Correct 1154 ms 103992 KB n=200000
100 Correct 952 ms 103992 KB n=200000
101 Correct 1443 ms 113228 KB n=200000
102 Correct 529 ms 113228 KB n=200000
103 Correct 546 ms 113228 KB n=200000
104 Correct 565 ms 113228 KB n=200000
105 Correct 529 ms 113228 KB n=200000
106 Correct 530 ms 113228 KB n=200000
107 Correct 535 ms 113228 KB n=200000
108 Correct 1079 ms 113228 KB n=200000
109 Correct 1063 ms 113228 KB n=200000
110 Correct 1088 ms 113228 KB n=200000
111 Correct 925 ms 113228 KB n=200000
112 Correct 1411 ms 113228 KB n=200000
113 Correct 1549 ms 113228 KB n=200000
114 Correct 1000 ms 113228 KB n=200000
115 Correct 1469 ms 113228 KB n=200000
116 Correct 996 ms 113228 KB n=200000
117 Correct 1425 ms 113228 KB n=200000
118 Correct 1468 ms 113228 KB n=200000
119 Correct 957 ms 113228 KB n=200000
120 Correct 1385 ms 113228 KB n=200000
121 Correct 1355 ms 113228 KB n=200000
122 Correct 1361 ms 113576 KB n=200000
123 Correct 547 ms 113576 KB n=200000
124 Correct 311 ms 113576 KB n=25264