oj.uz

Submission #379388

# Submission time Handle Problem Language Result Execution time Memory
379388 2021-03-18T05:47:18 Z syl123456 Birthday gift (IZhO18_treearray) C++17
100 / 100
 1855 ms 77676 KB 
#include <bits/stdc++.h>
#define all(i) i.begin(), i.end()
#define rall(i) i.rbegin(), i.rend()
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
vector<vector<int>> g, pa;
vector<int> d;
void dfs(int i, int p) {
    for (int j : g[i]) if (j != p)
        d[j] = d[i] + 1, pa[j][0] = i, dfs(j, i);
}
int lca(int i, int j) {
    if (d[i] < d[j]) swap(i, j);
    for (int ii = 19; ~ii; --ii) if (d[pa[i][ii]] >= d[j])
            i = pa[i][ii];
    for (int ii = 19; ~ii; --ii) if (pa[i][ii] != pa[j][ii])
            i = pa[i][ii], j = pa[j][ii];
    return i == j ? i : pa[i][0];
}
int main() {
    ios::sync_with_stdio(0), cin.tie(0);
    int n, m, q;
    cin >> n >> m >> q;
    g.resize(n), pa.assign(n, vector<int>(20)), d.resize(n);
    for (int i = 0; i < n - 1; ++i) {
        int x, y;
        cin >> x >> y;
        --x, --y;
        g[x].push_back(y), g[y].push_back(x);
    }
    pa[0][0] = d[0] = 0;
    dfs(0, 0);
    for (int i = 1; i < 20; ++i) for (int j = 0; j < n; ++j)
        pa[j][i] = pa[pa[j][i - 1]][i - 1];
    int a[m];
    for (int &i : a) cin >> i, --i;
    set<int> s[n], s1[n];
    for (int i = 1; i < m; ++i) s[lca(a[i], a[i - 1])].insert(i - 1);
    for (int i = 0; i < m; ++i) s1[a[i]].insert(i);
    while (q--) {
        int ty, x, y, z;
        cin >> ty >> x >> y;
        --x, --y;
        if (ty == 1) {
            if (x) s[lca(a[x], a[x - 1])].erase(x - 1);
            if (x < m - 1) s[lca(a[x], a[x + 1])].erase(x);
            s1[a[x]].erase(x);
            a[x] = y;
            if (x) s[lca(a[x], a[x - 1])].insert(x - 1);
            if (x < m - 1) s[lca(a[x], a[x + 1])].insert(x);
            s1[a[x]].insert(x);
        }
        else {
            cin >> z;
            --z;
            auto it = s1[z].lower_bound(x);
            if (it != s1[z].end() && *it <= y) {
                cout << *it + 1 << ' ' << *it + 1 << '\n';
                continue;
            }
            it = s[z].lower_bound(x);
            if (it == s[z].lower_bound(y))
                cout << "-1 -1\n";
            else cout << *it + 1 << ' ' << *it + 2 << '\n';
        }
    }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=5
2 Correct 1 ms 364 KB n=100
3 Correct 1 ms 364 KB n=100
4 Correct 1 ms 364 KB n=100
5 Correct 1 ms 364 KB n=100
6 Correct 1 ms 364 KB n=100
7 Correct 1 ms 364 KB n=100
8 Correct 1 ms 364 KB n=100
9 Correct 1 ms 364 KB n=100
10 Correct 1 ms 364 KB n=100
11 Correct 1 ms 364 KB n=100
12 Correct 1 ms 364 KB n=100
13 Correct 1 ms 364 KB n=100
14 Correct 1 ms 364 KB n=100
15 Correct 1 ms 364 KB n=100
16 Correct 1 ms 364 KB n=100
17 Correct 1 ms 364 KB n=100
18 Correct 1 ms 364 KB n=100
19 Correct 1 ms 364 KB n=100
20 Correct 1 ms 364 KB n=100
21 Correct 1 ms 364 KB n=100
22 Correct 1 ms 364 KB n=100
23 Correct 1 ms 492 KB n=100
24 Correct 1 ms 364 KB n=100
25 Correct 1 ms 364 KB n=100
26 Correct 1 ms 364 KB n=12
27 Correct 1 ms 364 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=5
2 Correct 1 ms 364 KB n=100
3 Correct 1 ms 364 KB n=100
4 Correct 1 ms 364 KB n=100
5 Correct 1 ms 364 KB n=100
6 Correct 1 ms 364 KB n=100
7 Correct 1 ms 364 KB n=100
8 Correct 1 ms 364 KB n=100
9 Correct 1 ms 364 KB n=100
10 Correct 1 ms 364 KB n=100
11 Correct 1 ms 364 KB n=100
12 Correct 1 ms 364 KB n=100
13 Correct 1 ms 364 KB n=100
14 Correct 1 ms 364 KB n=100
15 Correct 1 ms 364 KB n=100
16 Correct 1 ms 364 KB n=100
17 Correct 1 ms 364 KB n=100
18 Correct 1 ms 364 KB n=100
19 Correct 1 ms 364 KB n=100
20 Correct 1 ms 364 KB n=100
21 Correct 1 ms 364 KB n=100
22 Correct 1 ms 364 KB n=100
23 Correct 1 ms 492 KB n=100
24 Correct 1 ms 364 KB n=100
25 Correct 1 ms 364 KB n=100
26 Correct 1 ms 364 KB n=12
27 Correct 1 ms 364 KB n=100
28 Correct 2 ms 492 KB n=500
29 Correct 2 ms 492 KB n=500
30 Correct 2 ms 620 KB n=500
31 Correct 2 ms 492 KB n=500
32 Correct 2 ms 492 KB n=500
33 Correct 2 ms 492 KB n=500
34 Correct 2 ms 492 KB n=500
35 Correct 2 ms 492 KB n=500
36 Correct 2 ms 492 KB n=500
37 Correct 1 ms 492 KB n=500
38 Correct 1 ms 492 KB n=500
39 Correct 2 ms 492 KB n=500
40 Correct 2 ms 492 KB n=500
41 Correct 1 ms 492 KB n=500
42 Correct 2 ms 492 KB n=500
43 Correct 2 ms 492 KB n=500
44 Correct 2 ms 492 KB n=500
45 Correct 2 ms 524 KB n=500
46 Correct 2 ms 492 KB n=500
47 Correct 2 ms 492 KB n=500
48 Correct 2 ms 620 KB n=500
49 Correct 2 ms 492 KB n=500
50 Correct 2 ms 492 KB n=500
51 Correct 2 ms 512 KB n=500
52 Correct 2 ms 492 KB n=500
53 Correct 2 ms 492 KB n=500
54 Correct 2 ms 492 KB n=500
55 Correct 1 ms 492 KB n=278
56 Correct 2 ms 492 KB n=500
57 Correct 2 ms 492 KB n=500
58 Correct 1 ms 492 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=5
2 Correct 1 ms 364 KB n=100
3 Correct 1 ms 364 KB n=100
4 Correct 1 ms 364 KB n=100
5 Correct 1 ms 364 KB n=100
6 Correct 1 ms 364 KB n=100
7 Correct 1 ms 364 KB n=100
8 Correct 1 ms 364 KB n=100
9 Correct 1 ms 364 KB n=100
10 Correct 1 ms 364 KB n=100
11 Correct 1 ms 364 KB n=100
12 Correct 1 ms 364 KB n=100
13 Correct 1 ms 364 KB n=100
14 Correct 1 ms 364 KB n=100
15 Correct 1 ms 364 KB n=100
16 Correct 1 ms 364 KB n=100
17 Correct 1 ms 364 KB n=100
18 Correct 1 ms 364 KB n=100
19 Correct 1 ms 364 KB n=100
20 Correct 1 ms 364 KB n=100
21 Correct 1 ms 364 KB n=100
22 Correct 1 ms 364 KB n=100
23 Correct 1 ms 492 KB n=100
24 Correct 1 ms 364 KB n=100
25 Correct 1 ms 364 KB n=100
26 Correct 1 ms 364 KB n=12
27 Correct 1 ms 364 KB n=100
28 Correct 2 ms 492 KB n=500
29 Correct 2 ms 492 KB n=500
30 Correct 2 ms 620 KB n=500
31 Correct 2 ms 492 KB n=500
32 Correct 2 ms 492 KB n=500
33 Correct 2 ms 492 KB n=500
34 Correct 2 ms 492 KB n=500
35 Correct 2 ms 492 KB n=500
36 Correct 2 ms 492 KB n=500
37 Correct 1 ms 492 KB n=500
38 Correct 1 ms 492 KB n=500
39 Correct 2 ms 492 KB n=500
40 Correct 2 ms 492 KB n=500
41 Correct 1 ms 492 KB n=500
42 Correct 2 ms 492 KB n=500
43 Correct 2 ms 492 KB n=500
44 Correct 2 ms 492 KB n=500
45 Correct 2 ms 524 KB n=500
46 Correct 2 ms 492 KB n=500
47 Correct 2 ms 492 KB n=500
48 Correct 2 ms 620 KB n=500
49 Correct 2 ms 492 KB n=500
50 Correct 2 ms 492 KB n=500
51 Correct 2 ms 512 KB n=500
52 Correct 2 ms 492 KB n=500
53 Correct 2 ms 492 KB n=500
54 Correct 2 ms 492 KB n=500
55 Correct 1 ms 492 KB n=278
56 Correct 2 ms 492 KB n=500
57 Correct 2 ms 492 KB n=500
58 Correct 1 ms 492 KB n=500
59 Correct 5 ms 1132 KB n=2000
60 Correct 5 ms 1132 KB n=2000
61 Correct 5 ms 1132 KB n=2000
62 Correct 7 ms 1132 KB n=2000
63 Correct 5 ms 1132 KB n=2000
64 Correct 7 ms 1132 KB n=2000
65 Correct 5 ms 1260 KB n=2000
66 Correct 5 ms 1132 KB n=2000
67 Correct 5 ms 1132 KB n=2000
68 Correct 5 ms 1132 KB n=2000
69 Correct 4 ms 1132 KB n=2000
70 Correct 4 ms 1260 KB n=2000
71 Correct 4 ms 1132 KB n=2000
72 Correct 3 ms 1132 KB n=2000
73 Correct 3 ms 1132 KB n=2000
74 Correct 4 ms 1132 KB n=1844
75 Correct 4 ms 1132 KB n=2000
76 Correct 5 ms 1132 KB n=2000
77 Correct 5 ms 1132 KB n=2000
78 Correct 5 ms 1132 KB n=2000
79 Correct 5 ms 1132 KB n=2000
80 Correct 5 ms 1132 KB n=2000
81 Correct 5 ms 1132 KB n=2000
82 Correct 5 ms 1132 KB n=2000
83 Correct 5 ms 1132 KB n=2000
84 Correct 6 ms 1132 KB n=2000
85 Correct 5 ms 1132 KB n=2000
86 Correct 5 ms 1132 KB n=2000
87 Correct 5 ms 1132 KB n=2000
88 Correct 5 ms 1132 KB n=2000
89 Correct 5 ms 1132 KB n=2000
90 Correct 6 ms 1260 KB n=2000
91 Correct 4 ms 1132 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=5
2 Correct 1 ms 364 KB n=100
3 Correct 1 ms 364 KB n=100
4 Correct 1 ms 364 KB n=100
5 Correct 1 ms 364 KB n=100
6 Correct 1 ms 364 KB n=100
7 Correct 1 ms 364 KB n=100
8 Correct 1 ms 364 KB n=100
9 Correct 1 ms 364 KB n=100
10 Correct 1 ms 364 KB n=100
11 Correct 1 ms 364 KB n=100
12 Correct 1 ms 364 KB n=100
13 Correct 1 ms 364 KB n=100
14 Correct 1 ms 364 KB n=100
15 Correct 1 ms 364 KB n=100
16 Correct 1 ms 364 KB n=100
17 Correct 1 ms 364 KB n=100
18 Correct 1 ms 364 KB n=100
19 Correct 1 ms 364 KB n=100
20 Correct 1 ms 364 KB n=100
21 Correct 1 ms 364 KB n=100
22 Correct 1 ms 364 KB n=100
23 Correct 1 ms 492 KB n=100
24 Correct 1 ms 364 KB n=100
25 Correct 1 ms 364 KB n=100
26 Correct 1 ms 364 KB n=12
27 Correct 1 ms 364 KB n=100
28 Correct 2 ms 492 KB n=500
29 Correct 2 ms 492 KB n=500
30 Correct 2 ms 620 KB n=500
31 Correct 2 ms 492 KB n=500
32 Correct 2 ms 492 KB n=500
33 Correct 2 ms 492 KB n=500
34 Correct 2 ms 492 KB n=500
35 Correct 2 ms 492 KB n=500
36 Correct 2 ms 492 KB n=500
37 Correct 1 ms 492 KB n=500
38 Correct 1 ms 492 KB n=500
39 Correct 2 ms 492 KB n=500
40 Correct 2 ms 492 KB n=500
41 Correct 1 ms 492 KB n=500
42 Correct 2 ms 492 KB n=500
43 Correct 2 ms 492 KB n=500
44 Correct 2 ms 492 KB n=500
45 Correct 2 ms 524 KB n=500
46 Correct 2 ms 492 KB n=500
47 Correct 2 ms 492 KB n=500
48 Correct 2 ms 620 KB n=500
49 Correct 2 ms 492 KB n=500
50 Correct 2 ms 492 KB n=500
51 Correct 2 ms 512 KB n=500
52 Correct 2 ms 492 KB n=500
53 Correct 2 ms 492 KB n=500
54 Correct 2 ms 492 KB n=500
55 Correct 1 ms 492 KB n=278
56 Correct 2 ms 492 KB n=500
57 Correct 2 ms 492 KB n=500
58 Correct 1 ms 492 KB n=500
59 Correct 5 ms 1132 KB n=2000
60 Correct 5 ms 1132 KB n=2000
61 Correct 5 ms 1132 KB n=2000
62 Correct 7 ms 1132 KB n=2000
63 Correct 5 ms 1132 KB n=2000
64 Correct 7 ms 1132 KB n=2000
65 Correct 5 ms 1260 KB n=2000
66 Correct 5 ms 1132 KB n=2000
67 Correct 5 ms 1132 KB n=2000
68 Correct 5 ms 1132 KB n=2000
69 Correct 4 ms 1132 KB n=2000
70 Correct 4 ms 1260 KB n=2000
71 Correct 4 ms 1132 KB n=2000
72 Correct 3 ms 1132 KB n=2000
73 Correct 3 ms 1132 KB n=2000
74 Correct 4 ms 1132 KB n=1844
75 Correct 4 ms 1132 KB n=2000
76 Correct 5 ms 1132 KB n=2000
77 Correct 5 ms 1132 KB n=2000
78 Correct 5 ms 1132 KB n=2000
79 Correct 5 ms 1132 KB n=2000
80 Correct 5 ms 1132 KB n=2000
81 Correct 5 ms 1132 KB n=2000
82 Correct 5 ms 1132 KB n=2000
83 Correct 5 ms 1132 KB n=2000
84 Correct 6 ms 1132 KB n=2000
85 Correct 5 ms 1132 KB n=2000
86 Correct 5 ms 1132 KB n=2000
87 Correct 5 ms 1132 KB n=2000
88 Correct 5 ms 1132 KB n=2000
89 Correct 5 ms 1132 KB n=2000
90 Correct 6 ms 1260 KB n=2000
91 Correct 4 ms 1132 KB n=2000
92 Correct 1010 ms 76780 KB n=200000
93 Correct 1727 ms 76012 KB n=200000
94 Correct 1664 ms 75900 KB n=200000
95 Correct 1016 ms 76496 KB n=200000
96 Correct 922 ms 76768 KB n=200000
97 Correct 1736 ms 76220 KB n=200000
98 Correct 954 ms 76640 KB n=200000
99 Correct 1246 ms 76140 KB n=200000
100 Correct 960 ms 76644 KB n=200000
101 Correct 1662 ms 75884 KB n=200000
102 Correct 583 ms 77548 KB n=200000
103 Correct 592 ms 77676 KB n=200000
104 Correct 578 ms 77604 KB n=200000
105 Correct 586 ms 77420 KB n=200000
106 Correct 584 ms 77292 KB n=200000
107 Correct 582 ms 77292 KB n=200000
108 Correct 1177 ms 76140 KB n=200000
109 Correct 1164 ms 75756 KB n=200000
110 Correct 1143 ms 75756 KB n=200000
111 Correct 950 ms 75744 KB n=200000
112 Correct 1691 ms 75116 KB n=200000
113 Correct 1726 ms 75176 KB n=200000
114 Correct 965 ms 75744 KB n=200000
115 Correct 1855 ms 75152 KB n=200000
116 Correct 924 ms 75576 KB n=200000
117 Correct 1698 ms 74860 KB n=200000
118 Correct 1817 ms 74848 KB n=200000
119 Correct 892 ms 75744 KB n=200000
120 Correct 1595 ms 74760 KB n=200000
121 Correct 1575 ms 74648 KB n=200000
122 Correct 1592 ms 75116 KB n=200000
123 Correct 594 ms 76268 KB n=200000
124 Correct 334 ms 16364 KB n=25264