oj.uz

Submission #378912

# Submission time Handle Problem Language Result Execution time Memory
378912 2021-03-17T07:26:16 Z casperwang Birthday gift (IZhO18_treearray) C++14
100 / 100
 1151 ms 79596 KB 
#include <bits/stdc++.h>
#define All(x) x.begin(), x.end()
#define pb emplace_back
#define pii pair<int,int>
#define ff first
#define ss second
using namespace std;
#define debug(args...) kout("[ " + string(#args) + " ]", args)
void kout() { cerr << endl; }
template <class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ',kout(b...); }
template <class T> void pary(T L, T R) { while (L != R) cerr << *L << " \n"[++L==R]; }

const int MAXN = 200000;
const int L = 20;
int N, M, Q;
int a, b, c;
vector <int> path[MAXN+1];
int anc[MAXN+1][L];
pii dfs[MAXN+1];
int cnt;
int v[MAXN*2+1];
set <int> pos[MAXN+1];
int typ;

void DFS(int now, int par) {
	dfs[now].ff = ++cnt;
	for (int i : path[now]) {
		if (i == par) continue;
		anc[i][0] = now;
		DFS(i, now);
	}
	dfs[now].ss = ++cnt;
}

void build() {
	for (int i = 1; i < L; i++) {
		for (int j = 1; j <= N; j++) {
			anc[j][i] = anc[anc[j][i-1]][i-1];
		}
	}
}

bool ancestor(int a, int b) {
	return dfs[a].ff <= dfs[b].ff && dfs[b].ss <= dfs[a].ss;
}

int LCA(int a, int b) {
	if (ancestor(a, b)) return a;
	for (int i = L-1; i >= 0; i--) {
		if (!ancestor(anc[a][i], b))
			a = anc[a][i];
	}
	return anc[a][0];
}

void del(int x, int v) {
	pos[x].erase(v);
}

void add(int x, int v) {
	pos[x].insert(v);
}

signed main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> N >> M >> Q;
	for (int i = 0; i < N-1; i++) {
		cin >> a >> b;
		path[a].pb(b);
		path[b].pb(a);
	}
	anc[1][0] = 1;
	DFS(1, 0);
	build();
	for (int i = 1; i <= M; i++) {
		cin >> v[i*2];
		if (i > 1)
			v[i*2-1] = LCA(v[i*2-2], v[i*2]);
	}
	for (int i = 2; i <= 2*M; i++)
		pos[v[i]].insert(i);
	for (int i = 0; i < Q; i++) {
		cin >> typ;
		if (typ == 1) {
			cin >> a >> c;
			del(v[a*2], a*2);
			v[a*2] = c;
			add(v[a*2], a*2);
			if (a > 1) {
				del(v[a*2-1], a*2-1);
				v[a*2-1] = LCA(v[a*2], v[a*2-2]);
				add(v[a*2-1], a*2-1);
			}
			if (a < M) {
				del(v[a*2+1], a*2+1);
				v[a*2+1] = LCA(v[a*2], v[a*2+2]);
				add(v[a*2+1], a*2+1);
			}
		} else {
			cin >> a >> b >> c;
			auto k = pos[c].lower_bound(a*2);
			if (k != pos[c].end() && *k <= b*2) {
				cout << *k/2 << ' ' << (*k+1)/2 << '\n';
			} else {
				cout << -1 << ' ' << -1 << '\n';
			}
		}
	}
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14444 KB n=5
2 Correct 10 ms 14444 KB n=100
3 Correct 10 ms 14444 KB n=100
4 Correct 10 ms 14444 KB n=100
5 Correct 10 ms 14444 KB n=100
6 Correct 11 ms 14444 KB n=100
7 Correct 10 ms 14444 KB n=100
8 Correct 10 ms 14444 KB n=100
9 Correct 10 ms 14444 KB n=100
10 Correct 11 ms 14444 KB n=100
11 Correct 10 ms 14572 KB n=100
12 Correct 10 ms 14444 KB n=100
13 Correct 10 ms 14444 KB n=100
14 Correct 10 ms 14444 KB n=100
15 Correct 10 ms 14444 KB n=100
16 Correct 10 ms 14444 KB n=100
17 Correct 10 ms 14444 KB n=100
18 Correct 10 ms 14444 KB n=100
19 Correct 10 ms 14444 KB n=100
20 Correct 10 ms 14444 KB n=100
21 Correct 10 ms 14444 KB n=100
22 Correct 10 ms 14444 KB n=100
23 Correct 10 ms 14444 KB n=100
24 Correct 10 ms 14444 KB n=100
25 Correct 10 ms 14464 KB n=100
26 Correct 10 ms 14444 KB n=12
27 Correct 10 ms 14444 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14444 KB n=5
2 Correct 10 ms 14444 KB n=100
3 Correct 10 ms 14444 KB n=100
4 Correct 10 ms 14444 KB n=100
5 Correct 10 ms 14444 KB n=100
6 Correct 11 ms 14444 KB n=100
7 Correct 10 ms 14444 KB n=100
8 Correct 10 ms 14444 KB n=100
9 Correct 10 ms 14444 KB n=100
10 Correct 11 ms 14444 KB n=100
11 Correct 10 ms 14572 KB n=100
12 Correct 10 ms 14444 KB n=100
13 Correct 10 ms 14444 KB n=100
14 Correct 10 ms 14444 KB n=100
15 Correct 10 ms 14444 KB n=100
16 Correct 10 ms 14444 KB n=100
17 Correct 10 ms 14444 KB n=100
18 Correct 10 ms 14444 KB n=100
19 Correct 10 ms 14444 KB n=100
20 Correct 10 ms 14444 KB n=100
21 Correct 10 ms 14444 KB n=100
22 Correct 10 ms 14444 KB n=100
23 Correct 10 ms 14444 KB n=100
24 Correct 10 ms 14444 KB n=100
25 Correct 10 ms 14464 KB n=100
26 Correct 10 ms 14444 KB n=12
27 Correct 10 ms 14444 KB n=100
28 Correct 11 ms 14572 KB n=500
29 Correct 11 ms 14572 KB n=500
30 Correct 11 ms 14572 KB n=500
31 Correct 11 ms 14572 KB n=500
32 Correct 11 ms 14572 KB n=500
33 Correct 11 ms 14572 KB n=500
34 Correct 11 ms 14572 KB n=500
35 Correct 11 ms 14572 KB n=500
36 Correct 11 ms 14572 KB n=500
37 Correct 11 ms 14572 KB n=500
38 Correct 11 ms 14572 KB n=500
39 Correct 11 ms 14572 KB n=500
40 Correct 11 ms 14572 KB n=500
41 Correct 11 ms 14572 KB n=500
42 Correct 11 ms 14572 KB n=500
43 Correct 11 ms 14572 KB n=500
44 Correct 11 ms 14572 KB n=500
45 Correct 11 ms 14572 KB n=500
46 Correct 11 ms 14572 KB n=500
47 Correct 11 ms 14572 KB n=500
48 Correct 11 ms 14572 KB n=500
49 Correct 11 ms 14588 KB n=500
50 Correct 11 ms 14572 KB n=500
51 Correct 11 ms 14572 KB n=500
52 Correct 12 ms 14572 KB n=500
53 Correct 11 ms 14572 KB n=500
54 Correct 12 ms 14572 KB n=500
55 Correct 12 ms 14572 KB n=278
56 Correct 11 ms 14572 KB n=500
57 Correct 11 ms 14572 KB n=500
58 Correct 11 ms 14572 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14444 KB n=5
2 Correct 10 ms 14444 KB n=100
3 Correct 10 ms 14444 KB n=100
4 Correct 10 ms 14444 KB n=100
5 Correct 10 ms 14444 KB n=100
6 Correct 11 ms 14444 KB n=100
7 Correct 10 ms 14444 KB n=100
8 Correct 10 ms 14444 KB n=100
9 Correct 10 ms 14444 KB n=100
10 Correct 11 ms 14444 KB n=100
11 Correct 10 ms 14572 KB n=100
12 Correct 10 ms 14444 KB n=100
13 Correct 10 ms 14444 KB n=100
14 Correct 10 ms 14444 KB n=100
15 Correct 10 ms 14444 KB n=100
16 Correct 10 ms 14444 KB n=100
17 Correct 10 ms 14444 KB n=100
18 Correct 10 ms 14444 KB n=100
19 Correct 10 ms 14444 KB n=100
20 Correct 10 ms 14444 KB n=100
21 Correct 10 ms 14444 KB n=100
22 Correct 10 ms 14444 KB n=100
23 Correct 10 ms 14444 KB n=100
24 Correct 10 ms 14444 KB n=100
25 Correct 10 ms 14464 KB n=100
26 Correct 10 ms 14444 KB n=12
27 Correct 10 ms 14444 KB n=100
28 Correct 11 ms 14572 KB n=500
29 Correct 11 ms 14572 KB n=500
30 Correct 11 ms 14572 KB n=500
31 Correct 11 ms 14572 KB n=500
32 Correct 11 ms 14572 KB n=500
33 Correct 11 ms 14572 KB n=500
34 Correct 11 ms 14572 KB n=500
35 Correct 11 ms 14572 KB n=500
36 Correct 11 ms 14572 KB n=500
37 Correct 11 ms 14572 KB n=500
38 Correct 11 ms 14572 KB n=500
39 Correct 11 ms 14572 KB n=500
40 Correct 11 ms 14572 KB n=500
41 Correct 11 ms 14572 KB n=500
42 Correct 11 ms 14572 KB n=500
43 Correct 11 ms 14572 KB n=500
44 Correct 11 ms 14572 KB n=500
45 Correct 11 ms 14572 KB n=500
46 Correct 11 ms 14572 KB n=500
47 Correct 11 ms 14572 KB n=500
48 Correct 11 ms 14572 KB n=500
49 Correct 11 ms 14588 KB n=500
50 Correct 11 ms 14572 KB n=500
51 Correct 11 ms 14572 KB n=500
52 Correct 12 ms 14572 KB n=500
53 Correct 11 ms 14572 KB n=500
54 Correct 12 ms 14572 KB n=500
55 Correct 12 ms 14572 KB n=278
56 Correct 11 ms 14572 KB n=500
57 Correct 11 ms 14572 KB n=500
58 Correct 11 ms 14572 KB n=500
59 Correct 15 ms 14956 KB n=2000
60 Correct 16 ms 14956 KB n=2000
61 Correct 14 ms 14956 KB n=2000
62 Correct 13 ms 14956 KB n=2000
63 Correct 16 ms 14960 KB n=2000
64 Correct 14 ms 14956 KB n=2000
65 Correct 14 ms 14956 KB n=2000
66 Correct 14 ms 14956 KB n=2000
67 Correct 17 ms 14956 KB n=2000
68 Correct 14 ms 14956 KB n=2000
69 Correct 14 ms 14956 KB n=2000
70 Correct 14 ms 14956 KB n=2000
71 Correct 16 ms 14956 KB n=2000
72 Correct 14 ms 14956 KB n=2000
73 Correct 13 ms 14956 KB n=2000
74 Correct 14 ms 14836 KB n=1844
75 Correct 14 ms 14956 KB n=2000
76 Correct 14 ms 14956 KB n=2000
77 Correct 13 ms 14956 KB n=2000
78 Correct 16 ms 14956 KB n=2000
79 Correct 16 ms 14916 KB n=2000
80 Correct 13 ms 14956 KB n=2000
81 Correct 16 ms 14956 KB n=2000
82 Correct 14 ms 14956 KB n=2000
83 Correct 13 ms 14956 KB n=2000
84 Correct 14 ms 14956 KB n=2000
85 Correct 14 ms 14956 KB n=2000
86 Correct 15 ms 14956 KB n=2000
87 Correct 14 ms 14956 KB n=2000
88 Correct 13 ms 14956 KB n=2000
89 Correct 13 ms 14956 KB n=2000
90 Correct 15 ms 14956 KB n=2000
91 Correct 14 ms 14956 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14444 KB n=5
2 Correct 10 ms 14444 KB n=100
3 Correct 10 ms 14444 KB n=100
4 Correct 10 ms 14444 KB n=100
5 Correct 10 ms 14444 KB n=100
6 Correct 11 ms 14444 KB n=100
7 Correct 10 ms 14444 KB n=100
8 Correct 10 ms 14444 KB n=100
9 Correct 10 ms 14444 KB n=100
10 Correct 11 ms 14444 KB n=100
11 Correct 10 ms 14572 KB n=100
12 Correct 10 ms 14444 KB n=100
13 Correct 10 ms 14444 KB n=100
14 Correct 10 ms 14444 KB n=100
15 Correct 10 ms 14444 KB n=100
16 Correct 10 ms 14444 KB n=100
17 Correct 10 ms 14444 KB n=100
18 Correct 10 ms 14444 KB n=100
19 Correct 10 ms 14444 KB n=100
20 Correct 10 ms 14444 KB n=100
21 Correct 10 ms 14444 KB n=100
22 Correct 10 ms 14444 KB n=100
23 Correct 10 ms 14444 KB n=100
24 Correct 10 ms 14444 KB n=100
25 Correct 10 ms 14464 KB n=100
26 Correct 10 ms 14444 KB n=12
27 Correct 10 ms 14444 KB n=100
28 Correct 11 ms 14572 KB n=500
29 Correct 11 ms 14572 KB n=500
30 Correct 11 ms 14572 KB n=500
31 Correct 11 ms 14572 KB n=500
32 Correct 11 ms 14572 KB n=500
33 Correct 11 ms 14572 KB n=500
34 Correct 11 ms 14572 KB n=500
35 Correct 11 ms 14572 KB n=500
36 Correct 11 ms 14572 KB n=500
37 Correct 11 ms 14572 KB n=500
38 Correct 11 ms 14572 KB n=500
39 Correct 11 ms 14572 KB n=500
40 Correct 11 ms 14572 KB n=500
41 Correct 11 ms 14572 KB n=500
42 Correct 11 ms 14572 KB n=500
43 Correct 11 ms 14572 KB n=500
44 Correct 11 ms 14572 KB n=500
45 Correct 11 ms 14572 KB n=500
46 Correct 11 ms 14572 KB n=500
47 Correct 11 ms 14572 KB n=500
48 Correct 11 ms 14572 KB n=500
49 Correct 11 ms 14588 KB n=500
50 Correct 11 ms 14572 KB n=500
51 Correct 11 ms 14572 KB n=500
52 Correct 12 ms 14572 KB n=500
53 Correct 11 ms 14572 KB n=500
54 Correct 12 ms 14572 KB n=500
55 Correct 12 ms 14572 KB n=278
56 Correct 11 ms 14572 KB n=500
57 Correct 11 ms 14572 KB n=500
58 Correct 11 ms 14572 KB n=500
59 Correct 15 ms 14956 KB n=2000
60 Correct 16 ms 14956 KB n=2000
61 Correct 14 ms 14956 KB n=2000
62 Correct 13 ms 14956 KB n=2000
63 Correct 16 ms 14960 KB n=2000
64 Correct 14 ms 14956 KB n=2000
65 Correct 14 ms 14956 KB n=2000
66 Correct 14 ms 14956 KB n=2000
67 Correct 17 ms 14956 KB n=2000
68 Correct 14 ms 14956 KB n=2000
69 Correct 14 ms 14956 KB n=2000
70 Correct 14 ms 14956 KB n=2000
71 Correct 16 ms 14956 KB n=2000
72 Correct 14 ms 14956 KB n=2000
73 Correct 13 ms 14956 KB n=2000
74 Correct 14 ms 14836 KB n=1844
75 Correct 14 ms 14956 KB n=2000
76 Correct 14 ms 14956 KB n=2000
77 Correct 13 ms 14956 KB n=2000
78 Correct 16 ms 14956 KB n=2000
79 Correct 16 ms 14916 KB n=2000
80 Correct 13 ms 14956 KB n=2000
81 Correct 16 ms 14956 KB n=2000
82 Correct 14 ms 14956 KB n=2000
83 Correct 13 ms 14956 KB n=2000
84 Correct 14 ms 14956 KB n=2000
85 Correct 14 ms 14956 KB n=2000
86 Correct 15 ms 14956 KB n=2000
87 Correct 14 ms 14956 KB n=2000
88 Correct 13 ms 14956 KB n=2000
89 Correct 13 ms 14956 KB n=2000
90 Correct 15 ms 14956 KB n=2000
91 Correct 14 ms 14956 KB n=2000
92 Correct 799 ms 60184 KB n=200000
93 Correct 1057 ms 69188 KB n=200000
94 Correct 1012 ms 77664 KB n=200000
95 Correct 785 ms 66608 KB n=200000
96 Correct 838 ms 66872 KB n=200000
97 Correct 1049 ms 72092 KB n=200000
98 Correct 785 ms 66540 KB n=200000
99 Correct 918 ms 66872 KB n=200000
100 Correct 831 ms 66788 KB n=200000
101 Correct 898 ms 79596 KB n=200000
102 Correct 517 ms 67764 KB n=200000
103 Correct 499 ms 67820 KB n=200000
104 Correct 499 ms 67808 KB n=200000
105 Correct 520 ms 68204 KB n=200000
106 Correct 511 ms 68204 KB n=200000
107 Correct 516 ms 68340 KB n=200000
108 Correct 839 ms 66668 KB n=200000
109 Correct 839 ms 66832 KB n=200000
110 Correct 844 ms 66820 KB n=200000
111 Correct 825 ms 66348 KB n=200000
112 Correct 886 ms 78060 KB n=200000
113 Correct 1036 ms 72060 KB n=200000
114 Correct 804 ms 66232 KB n=200000
115 Correct 1151 ms 69356 KB n=200000
116 Correct 742 ms 66920 KB n=200000
117 Correct 892 ms 78828 KB n=200000
118 Correct 1033 ms 70644 KB n=200000
119 Correct 722 ms 67008 KB n=200000
120 Correct 816 ms 78444 KB n=200000
121 Correct 841 ms 78520 KB n=200000
122 Correct 876 ms 78744 KB n=200000
123 Correct 515 ms 68204 KB n=200000
124 Correct 211 ms 30188 KB n=25264