oj.uz

Submission #1088594

# Submission time Handle Problem Language Result Execution time Memory
1088594 2024-09-14T16:09:30 Z vladilius Birthday gift (IZhO18_treearray) C++17
100 / 100
 710 ms 81556 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int n, m, q; cin>>n>>m>>q;
    vector<int> g[n + 1];
    for (int i = 1; i < n; i++){
        int u, v; cin>>u>>v;
        g[u].pb(v);
        g[v].pb(u);
    }
    
    const int lg = log2(n);
    vector<vector<int>> pw(n + 1, vector<int>(lg + 1));
    vector<int> tin(n + 1), tout(n + 1);
    int timer = 0;
    function<void(int, int)> fill = [&](int v, int pr){
        tin[v] = ++timer;
        pw[v][0] = pr;
        for (int i = 1; i <= lg; i++){
            pw[v][i] = pw[pw[v][i - 1]][i - 1];
        }
        for (int i: g[v]){
            if (i == pr) continue;
            fill(i, v);
        }
        tout[v] = timer;
    };
    fill(1, 1);
    
    auto check = [&](int x, int y){
        return (tin[x] <= tin[y] && tout[x] >= tout[y]);
    };
    
    auto lca = [&](int x, int y){
        if (check(x, y)) return x;
        if (check(y, x)) return y;
        for (int i = lg; i >= 0; i--){
            if (!check(pw[x][i], y)){
                x = pw[x][i];
            }
        }
        return pw[x][0];
    };
    
    vector<int> a(m + 1);
    set<int> st[n + 1];
    for (int i = 1; i <= m; i++){
        cin>>a[i];
        st[a[i]].insert(i);
    }
    set<int> st1[n + 1];
    for (int i = 1; i + 1 <= m; i++){
        st1[lca(a[i], a[i + 1])].insert(i);
    }
    while (q--){
        int type; cin>>type;
        if (type == 1){
            int p, v; cin>>p>>v;
            if (p > 1) st1[lca(a[p - 1], a[p])].erase(p - 1);
            if (p < m) st1[lca(a[p], a[p + 1])].erase(p);
            st[a[p]].erase(p);
            a[p] = v;
            st[v].insert(p);
            
            if (p > 1) st1[lca(a[p - 1], a[p])].insert(p - 1);
            if (p < m) st1[lca(a[p], a[p + 1])].insert(p);
        }
        else {
            int l, r, v; cin>>l>>r>>v;
            auto it = st[v].lower_bound(l);
            if (it != st[v].end() && (*it) <= r){
                cout<<(*it)<<" "<<(*it)<<"\n";
                continue;
            }
            it = st1[v].lower_bound(l);
            if (it != st1[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 0 ms 344 KB n=5
2 Correct 0 ms 348 KB n=100
3 Correct 0 ms 348 KB n=100
4 Correct 0 ms 348 KB n=100
5 Correct 0 ms 456 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 0 ms 348 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 0 ms 348 KB n=100
10 Correct 1 ms 452 KB n=100
11 Correct 0 ms 344 KB n=100
12 Correct 1 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 0 ms 344 KB n=100
17 Correct 0 ms 344 KB n=100
18 Correct 0 ms 344 KB n=100
19 Correct 1 ms 348 KB n=100
20 Correct 1 ms 348 KB n=100
21 Correct 0 ms 348 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 348 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 1 ms 348 KB n=12
27 Correct 1 ms 344 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n=5
2 Correct 0 ms 348 KB n=100
3 Correct 0 ms 348 KB n=100
4 Correct 0 ms 348 KB n=100
5 Correct 0 ms 456 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 0 ms 348 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 0 ms 348 KB n=100
10 Correct 1 ms 452 KB n=100
11 Correct 0 ms 344 KB n=100
12 Correct 1 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 0 ms 344 KB n=100
17 Correct 0 ms 344 KB n=100
18 Correct 0 ms 344 KB n=100
19 Correct 1 ms 348 KB n=100
20 Correct 1 ms 348 KB n=100
21 Correct 0 ms 348 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 348 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 1 ms 348 KB n=12
27 Correct 1 ms 344 KB n=100
28 Correct 1 ms 604 KB n=500
29 Correct 1 ms 604 KB n=500
30 Correct 1 ms 604 KB n=500
31 Correct 1 ms 600 KB n=500
32 Correct 1 ms 600 KB n=500
33 Correct 1 ms 604 KB n=500
34 Correct 1 ms 604 KB n=500
35 Correct 1 ms 604 KB n=500
36 Correct 1 ms 604 KB n=500
37 Correct 1 ms 604 KB n=500
38 Correct 1 ms 604 KB n=500
39 Correct 1 ms 604 KB n=500
40 Correct 1 ms 604 KB n=500
41 Correct 1 ms 604 KB n=500
42 Correct 1 ms 600 KB n=500
43 Correct 1 ms 600 KB n=500
44 Correct 1 ms 600 KB n=500
45 Correct 1 ms 604 KB n=500
46 Correct 1 ms 604 KB n=500
47 Correct 1 ms 604 KB n=500
48 Correct 1 ms 604 KB n=500
49 Correct 1 ms 604 KB n=500
50 Correct 1 ms 600 KB n=500
51 Correct 1 ms 604 KB n=500
52 Correct 1 ms 604 KB n=500
53 Correct 1 ms 604 KB n=500
54 Correct 1 ms 604 KB n=500
55 Correct 0 ms 348 KB n=278
56 Correct 2 ms 604 KB n=500
57 Correct 1 ms 604 KB n=500
58 Correct 1 ms 600 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n=5
2 Correct 0 ms 348 KB n=100
3 Correct 0 ms 348 KB n=100
4 Correct 0 ms 348 KB n=100
5 Correct 0 ms 456 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 0 ms 348 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 0 ms 348 KB n=100
10 Correct 1 ms 452 KB n=100
11 Correct 0 ms 344 KB n=100
12 Correct 1 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 0 ms 344 KB n=100
17 Correct 0 ms 344 KB n=100
18 Correct 0 ms 344 KB n=100
19 Correct 1 ms 348 KB n=100
20 Correct 1 ms 348 KB n=100
21 Correct 0 ms 348 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 348 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 1 ms 348 KB n=12
27 Correct 1 ms 344 KB n=100
28 Correct 1 ms 604 KB n=500
29 Correct 1 ms 604 KB n=500
30 Correct 1 ms 604 KB n=500
31 Correct 1 ms 600 KB n=500
32 Correct 1 ms 600 KB n=500
33 Correct 1 ms 604 KB n=500
34 Correct 1 ms 604 KB n=500
35 Correct 1 ms 604 KB n=500
36 Correct 1 ms 604 KB n=500
37 Correct 1 ms 604 KB n=500
38 Correct 1 ms 604 KB n=500
39 Correct 1 ms 604 KB n=500
40 Correct 1 ms 604 KB n=500
41 Correct 1 ms 604 KB n=500
42 Correct 1 ms 600 KB n=500
43 Correct 1 ms 600 KB n=500
44 Correct 1 ms 600 KB n=500
45 Correct 1 ms 604 KB n=500
46 Correct 1 ms 604 KB n=500
47 Correct 1 ms 604 KB n=500
48 Correct 1 ms 604 KB n=500
49 Correct 1 ms 604 KB n=500
50 Correct 1 ms 600 KB n=500
51 Correct 1 ms 604 KB n=500
52 Correct 1 ms 604 KB n=500
53 Correct 1 ms 604 KB n=500
54 Correct 1 ms 604 KB n=500
55 Correct 0 ms 348 KB n=278
56 Correct 2 ms 604 KB n=500
57 Correct 1 ms 604 KB n=500
58 Correct 1 ms 600 KB n=500
59 Correct 3 ms 1116 KB n=2000
60 Correct 2 ms 1124 KB n=2000
61 Correct 2 ms 1112 KB n=2000
62 Correct 3 ms 1112 KB n=2000
63 Correct 3 ms 1116 KB n=2000
64 Correct 2 ms 1192 KB n=2000
65 Correct 3 ms 1112 KB n=2000
66 Correct 3 ms 1128 KB n=2000
67 Correct 3 ms 1112 KB n=2000
68 Correct 2 ms 1116 KB n=2000
69 Correct 2 ms 1112 KB n=2000
70 Correct 2 ms 1116 KB n=2000
71 Correct 2 ms 1116 KB n=2000
72 Correct 2 ms 1116 KB n=2000
73 Correct 3 ms 1116 KB n=2000
74 Correct 2 ms 976 KB n=1844
75 Correct 2 ms 1116 KB n=2000
76 Correct 3 ms 1124 KB n=2000
77 Correct 3 ms 1116 KB n=2000
78 Correct 3 ms 1116 KB n=2000
79 Correct 3 ms 1128 KB n=2000
80 Correct 2 ms 1116 KB n=2000
81 Correct 2 ms 1116 KB n=2000
82 Correct 3 ms 1116 KB n=2000
83 Correct 2 ms 1116 KB n=2000
84 Correct 3 ms 1116 KB n=2000
85 Correct 3 ms 1116 KB n=2000
86 Correct 2 ms 1064 KB n=2000
87 Correct 3 ms 1116 KB n=2000
88 Correct 3 ms 1116 KB n=2000
89 Correct 2 ms 1112 KB n=2000
90 Correct 2 ms 1116 KB n=2000
91 Correct 2 ms 1116 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n=5
2 Correct 0 ms 348 KB n=100
3 Correct 0 ms 348 KB n=100
4 Correct 0 ms 348 KB n=100
5 Correct 0 ms 456 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 0 ms 348 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 0 ms 348 KB n=100
10 Correct 1 ms 452 KB n=100
11 Correct 0 ms 344 KB n=100
12 Correct 1 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 0 ms 344 KB n=100
17 Correct 0 ms 344 KB n=100
18 Correct 0 ms 344 KB n=100
19 Correct 1 ms 348 KB n=100
20 Correct 1 ms 348 KB n=100
21 Correct 0 ms 348 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 348 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 1 ms 348 KB n=12
27 Correct 1 ms 344 KB n=100
28 Correct 1 ms 604 KB n=500
29 Correct 1 ms 604 KB n=500
30 Correct 1 ms 604 KB n=500
31 Correct 1 ms 600 KB n=500
32 Correct 1 ms 600 KB n=500
33 Correct 1 ms 604 KB n=500
34 Correct 1 ms 604 KB n=500
35 Correct 1 ms 604 KB n=500
36 Correct 1 ms 604 KB n=500
37 Correct 1 ms 604 KB n=500
38 Correct 1 ms 604 KB n=500
39 Correct 1 ms 604 KB n=500
40 Correct 1 ms 604 KB n=500
41 Correct 1 ms 604 KB n=500
42 Correct 1 ms 600 KB n=500
43 Correct 1 ms 600 KB n=500
44 Correct 1 ms 600 KB n=500
45 Correct 1 ms 604 KB n=500
46 Correct 1 ms 604 KB n=500
47 Correct 1 ms 604 KB n=500
48 Correct 1 ms 604 KB n=500
49 Correct 1 ms 604 KB n=500
50 Correct 1 ms 600 KB n=500
51 Correct 1 ms 604 KB n=500
52 Correct 1 ms 604 KB n=500
53 Correct 1 ms 604 KB n=500
54 Correct 1 ms 604 KB n=500
55 Correct 0 ms 348 KB n=278
56 Correct 2 ms 604 KB n=500
57 Correct 1 ms 604 KB n=500
58 Correct 1 ms 600 KB n=500
59 Correct 3 ms 1116 KB n=2000
60 Correct 2 ms 1124 KB n=2000
61 Correct 2 ms 1112 KB n=2000
62 Correct 3 ms 1112 KB n=2000
63 Correct 3 ms 1116 KB n=2000
64 Correct 2 ms 1192 KB n=2000
65 Correct 3 ms 1112 KB n=2000
66 Correct 3 ms 1128 KB n=2000
67 Correct 3 ms 1112 KB n=2000
68 Correct 2 ms 1116 KB n=2000
69 Correct 2 ms 1112 KB n=2000
70 Correct 2 ms 1116 KB n=2000
71 Correct 2 ms 1116 KB n=2000
72 Correct 2 ms 1116 KB n=2000
73 Correct 3 ms 1116 KB n=2000
74 Correct 2 ms 976 KB n=1844
75 Correct 2 ms 1116 KB n=2000
76 Correct 3 ms 1124 KB n=2000
77 Correct 3 ms 1116 KB n=2000
78 Correct 3 ms 1116 KB n=2000
79 Correct 3 ms 1128 KB n=2000
80 Correct 2 ms 1116 KB n=2000
81 Correct 2 ms 1116 KB n=2000
82 Correct 3 ms 1116 KB n=2000
83 Correct 2 ms 1116 KB n=2000
84 Correct 3 ms 1116 KB n=2000
85 Correct 3 ms 1116 KB n=2000
86 Correct 2 ms 1064 KB n=2000
87 Correct 3 ms 1116 KB n=2000
88 Correct 3 ms 1116 KB n=2000
89 Correct 2 ms 1112 KB n=2000
90 Correct 2 ms 1116 KB n=2000
91 Correct 2 ms 1116 KB n=2000
92 Correct 464 ms 80032 KB n=200000
93 Correct 534 ms 80332 KB n=200000
94 Correct 403 ms 80464 KB n=200000
95 Correct 501 ms 79932 KB n=200000
96 Correct 453 ms 79812 KB n=200000
97 Correct 560 ms 80464 KB n=200000
98 Correct 464 ms 79816 KB n=200000
99 Correct 566 ms 80340 KB n=200000
100 Correct 465 ms 80064 KB n=200000
101 Correct 352 ms 80212 KB n=200000
102 Correct 273 ms 81028 KB n=200000
103 Correct 296 ms 80980 KB n=200000
104 Correct 279 ms 81232 KB n=200000
105 Correct 290 ms 81556 KB n=200000
106 Correct 322 ms 81460 KB n=200000
107 Correct 293 ms 81488 KB n=200000
108 Correct 476 ms 79932 KB n=200000
109 Correct 514 ms 79956 KB n=200000
110 Correct 496 ms 79884 KB n=200000
111 Correct 455 ms 79436 KB n=200000
112 Correct 359 ms 80380 KB n=200000
113 Correct 538 ms 80212 KB n=200000
114 Correct 459 ms 79300 KB n=200000
115 Correct 710 ms 80464 KB n=200000
116 Correct 507 ms 80324 KB n=200000
117 Correct 357 ms 80212 KB n=200000
118 Correct 607 ms 80200 KB n=200000
119 Correct 485 ms 80096 KB n=200000
120 Correct 267 ms 79188 KB n=200000
121 Correct 272 ms 79184 KB n=200000
122 Correct 249 ms 79528 KB n=200000
123 Correct 267 ms 81360 KB n=200000
124 Correct 83 ms 18000 KB n=25264