oj.uz

Submission #345723

# Submission time Handle Problem Language Result Execution time Memory
345723 2021-01-08T01:33:55 Z nandonathaniel Birthday gift (IZhO18_treearray) C++14
100 / 100
 1398 ms 81388 KB 
#include<bits/stdc++.h>
using namespace std;
const int MAXN=200005,LOG=18;

vector<int> adj[MAXN];
int depth[MAXN],pa[LOG][MAXN],a[MAXN];
set<int> sendiri[MAXN],berdua[MAXN];

void dfs(int now,int par){
	for(auto nxt : adj[now]){
		if(nxt==par)continue;
		depth[nxt]=depth[now]+1;
		pa[0][nxt]=now;
		for(int i=1;i<LOG;i++)pa[i][nxt]=pa[i-1][pa[i-1][nxt]];
		dfs(nxt,now);
	}
}

int LCA(int u,int v){
	if(depth[u]<depth[v])swap(u,v);
	int diff=depth[u]-depth[v];
	for(int i=LOG-1;i>=0;i--){
		if(diff&(1<<i))u=pa[i][u];
	}
	if(u==v)return u;
	for(int i=LOG-1;i>=0;i--){
		if(pa[i][u]!=pa[i][v]){
			u=pa[i][u];
			v=pa[i][v];
		}
	}
	return pa[0][u];
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n,m,q,op,x,y,u,v;
	cin >> n >> m >> q;
	for(int i=1;i<n;i++){
		cin >> u >> v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	dfs(1,-1);
	for(int i=1;i<=m;i++){
		cin >> a[i];
		sendiri[a[i]].insert(i);
		if(i>=2){
			berdua[LCA(a[i-1],a[i])].insert(i-1);
		}
	}
	while(q--){
		cin >> op >> x >> y;
		if(op==1){
			sendiri[a[x]].erase(x);
			if(x>=2)berdua[LCA(a[x],a[x-1])].erase(x-1);
			if(x<=m-1)berdua[LCA(a[x],a[x+1])].erase(x);
			a[x]=y;
			sendiri[a[x]].insert(x);
			if(x>=2)berdua[LCA(a[x],a[x-1])].insert(x-1);
			if(x<=m-1)berdua[LCA(a[x],a[x+1])].insert(x);
		}
		else{
			cin >> v;
			bool sudah=false;
			auto it=sendiri[v].lower_bound(x);
			auto it2=berdua[v].lower_bound(x);
			if(it!=sendiri[v].end() && *it<=y){
				cout << *it << " " << *it << '\n';
			}
			else if(it2!=berdua[v].end() && *it2<=y-1){
				cout << *it2 << " " << (*it2)+1 << '\n';
			}
			else{
				cout << -1 << " " << -1 << '\n';
			}
		}
	}
	return 0;
}

Compilation message

treearray.cpp: In function 'int main()':
treearray.cpp:65:9: warning: unused variable 'sudah' [-Wunused-variable]
   65 |    bool sudah=false;
      |         ^~~~~

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 16 ms 23916 KB n=100
4 Correct 16 ms 23916 KB n=100
5 Correct 16 ms 23916 KB n=100
6 Correct 16 ms 23916 KB n=100
7 Correct 16 ms 23916 KB n=100
8 Correct 17 ms 23916 KB n=100
9 Correct 17 ms 23916 KB n=100
10 Correct 16 ms 23940 KB n=100
11 Correct 16 ms 23916 KB n=100
12 Correct 16 ms 23916 KB n=100
13 Correct 17 ms 23916 KB n=100
14 Correct 16 ms 23916 KB n=100
15 Correct 17 ms 23916 KB n=100
16 Correct 17 ms 23912 KB n=100
17 Correct 16 ms 23916 KB n=100
18 Correct 17 ms 23916 KB n=100
19 Correct 16 ms 23916 KB n=100
20 Correct 17 ms 23916 KB n=100
21 Correct 17 ms 23916 KB n=100
22 Correct 17 ms 23916 KB n=100
23 Correct 17 ms 23916 KB n=100
24 Correct 19 ms 23916 KB n=100
25 Correct 17 ms 23916 KB n=100
26 Correct 17 ms 23916 KB n=12
27 Correct 18 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 16 ms 23916 KB n=100
4 Correct 16 ms 23916 KB n=100
5 Correct 16 ms 23916 KB n=100
6 Correct 16 ms 23916 KB n=100
7 Correct 16 ms 23916 KB n=100
8 Correct 17 ms 23916 KB n=100
9 Correct 17 ms 23916 KB n=100
10 Correct 16 ms 23940 KB n=100
11 Correct 16 ms 23916 KB n=100
12 Correct 16 ms 23916 KB n=100
13 Correct 17 ms 23916 KB n=100
14 Correct 16 ms 23916 KB n=100
15 Correct 17 ms 23916 KB n=100
16 Correct 17 ms 23912 KB n=100
17 Correct 16 ms 23916 KB n=100
18 Correct 17 ms 23916 KB n=100
19 Correct 16 ms 23916 KB n=100
20 Correct 17 ms 23916 KB n=100
21 Correct 17 ms 23916 KB n=100
22 Correct 17 ms 23916 KB n=100
23 Correct 17 ms 23916 KB n=100
24 Correct 19 ms 23916 KB n=100
25 Correct 17 ms 23916 KB n=100
26 Correct 17 ms 23916 KB n=12
27 Correct 18 ms 23916 KB n=100
28 Correct 17 ms 24044 KB n=500
29 Correct 17 ms 24044 KB n=500
30 Correct 17 ms 24044 KB n=500
31 Correct 17 ms 24044 KB n=500
32 Correct 17 ms 24044 KB n=500
33 Correct 17 ms 24044 KB n=500
34 Correct 17 ms 24044 KB n=500
35 Correct 18 ms 24044 KB n=500
36 Correct 17 ms 24044 KB n=500
37 Correct 18 ms 24044 KB n=500
38 Correct 17 ms 24044 KB n=500
39 Correct 17 ms 24084 KB n=500
40 Correct 17 ms 24044 KB n=500
41 Correct 17 ms 24044 KB n=500
42 Correct 17 ms 24044 KB n=500
43 Correct 17 ms 24044 KB n=500
44 Correct 17 ms 24044 KB n=500
45 Correct 17 ms 24044 KB n=500
46 Correct 17 ms 24044 KB n=500
47 Correct 17 ms 24044 KB n=500
48 Correct 17 ms 24044 KB n=500
49 Correct 17 ms 24044 KB n=500
50 Correct 17 ms 24044 KB n=500
51 Correct 17 ms 24044 KB n=500
52 Correct 17 ms 24044 KB n=500
53 Correct 17 ms 24044 KB n=500
54 Correct 17 ms 24044 KB n=500
55 Correct 17 ms 24044 KB n=278
56 Correct 17 ms 24044 KB n=500
57 Correct 17 ms 24044 KB n=500
58 Correct 17 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 16 ms 23916 KB n=100
4 Correct 16 ms 23916 KB n=100
5 Correct 16 ms 23916 KB n=100
6 Correct 16 ms 23916 KB n=100
7 Correct 16 ms 23916 KB n=100
8 Correct 17 ms 23916 KB n=100
9 Correct 17 ms 23916 KB n=100
10 Correct 16 ms 23940 KB n=100
11 Correct 16 ms 23916 KB n=100
12 Correct 16 ms 23916 KB n=100
13 Correct 17 ms 23916 KB n=100
14 Correct 16 ms 23916 KB n=100
15 Correct 17 ms 23916 KB n=100
16 Correct 17 ms 23912 KB n=100
17 Correct 16 ms 23916 KB n=100
18 Correct 17 ms 23916 KB n=100
19 Correct 16 ms 23916 KB n=100
20 Correct 17 ms 23916 KB n=100
21 Correct 17 ms 23916 KB n=100
22 Correct 17 ms 23916 KB n=100
23 Correct 17 ms 23916 KB n=100
24 Correct 19 ms 23916 KB n=100
25 Correct 17 ms 23916 KB n=100
26 Correct 17 ms 23916 KB n=12
27 Correct 18 ms 23916 KB n=100
28 Correct 17 ms 24044 KB n=500
29 Correct 17 ms 24044 KB n=500
30 Correct 17 ms 24044 KB n=500
31 Correct 17 ms 24044 KB n=500
32 Correct 17 ms 24044 KB n=500
33 Correct 17 ms 24044 KB n=500
34 Correct 17 ms 24044 KB n=500
35 Correct 18 ms 24044 KB n=500
36 Correct 17 ms 24044 KB n=500
37 Correct 18 ms 24044 KB n=500
38 Correct 17 ms 24044 KB n=500
39 Correct 17 ms 24084 KB n=500
40 Correct 17 ms 24044 KB n=500
41 Correct 17 ms 24044 KB n=500
42 Correct 17 ms 24044 KB n=500
43 Correct 17 ms 24044 KB n=500
44 Correct 17 ms 24044 KB n=500
45 Correct 17 ms 24044 KB n=500
46 Correct 17 ms 24044 KB n=500
47 Correct 17 ms 24044 KB n=500
48 Correct 17 ms 24044 KB n=500
49 Correct 17 ms 24044 KB n=500
50 Correct 17 ms 24044 KB n=500
51 Correct 17 ms 24044 KB n=500
52 Correct 17 ms 24044 KB n=500
53 Correct 17 ms 24044 KB n=500
54 Correct 17 ms 24044 KB n=500
55 Correct 17 ms 24044 KB n=278
56 Correct 17 ms 24044 KB n=500
57 Correct 17 ms 24044 KB n=500
58 Correct 17 ms 24044 KB n=500
59 Correct 20 ms 24300 KB n=2000
60 Correct 20 ms 24556 KB n=2000
61 Correct 21 ms 24428 KB n=2000
62 Correct 20 ms 24428 KB n=2000
63 Correct 20 ms 24300 KB n=2000
64 Correct 22 ms 24428 KB n=2000
65 Correct 20 ms 24300 KB n=2000
66 Correct 20 ms 24448 KB n=2000
67 Correct 20 ms 24300 KB n=2000
68 Correct 20 ms 24428 KB n=2000
69 Correct 19 ms 24300 KB n=2000
70 Correct 19 ms 24300 KB n=2000
71 Correct 19 ms 24300 KB n=2000
72 Correct 22 ms 24300 KB n=2000
73 Correct 19 ms 24300 KB n=2000
74 Correct 20 ms 24300 KB n=1844
75 Correct 19 ms 24300 KB n=2000
76 Correct 21 ms 24300 KB n=2000
77 Correct 20 ms 24300 KB n=2000
78 Correct 20 ms 24300 KB n=2000
79 Correct 20 ms 24300 KB n=2000
80 Correct 20 ms 24428 KB n=2000
81 Correct 20 ms 24428 KB n=2000
82 Correct 20 ms 24300 KB n=2000
83 Correct 20 ms 24428 KB n=2000
84 Correct 20 ms 24300 KB n=2000
85 Correct 22 ms 24428 KB n=2000
86 Correct 20 ms 24428 KB n=2000
87 Correct 20 ms 24428 KB n=2000
88 Correct 20 ms 24556 KB n=2000
89 Correct 20 ms 24556 KB n=2000
90 Correct 21 ms 24556 KB n=2000
91 Correct 19 ms 24300 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 16 ms 23916 KB n=100
4 Correct 16 ms 23916 KB n=100
5 Correct 16 ms 23916 KB n=100
6 Correct 16 ms 23916 KB n=100
7 Correct 16 ms 23916 KB n=100
8 Correct 17 ms 23916 KB n=100
9 Correct 17 ms 23916 KB n=100
10 Correct 16 ms 23940 KB n=100
11 Correct 16 ms 23916 KB n=100
12 Correct 16 ms 23916 KB n=100
13 Correct 17 ms 23916 KB n=100
14 Correct 16 ms 23916 KB n=100
15 Correct 17 ms 23916 KB n=100
16 Correct 17 ms 23912 KB n=100
17 Correct 16 ms 23916 KB n=100
18 Correct 17 ms 23916 KB n=100
19 Correct 16 ms 23916 KB n=100
20 Correct 17 ms 23916 KB n=100
21 Correct 17 ms 23916 KB n=100
22 Correct 17 ms 23916 KB n=100
23 Correct 17 ms 23916 KB n=100
24 Correct 19 ms 23916 KB n=100
25 Correct 17 ms 23916 KB n=100
26 Correct 17 ms 23916 KB n=12
27 Correct 18 ms 23916 KB n=100
28 Correct 17 ms 24044 KB n=500
29 Correct 17 ms 24044 KB n=500
30 Correct 17 ms 24044 KB n=500
31 Correct 17 ms 24044 KB n=500
32 Correct 17 ms 24044 KB n=500
33 Correct 17 ms 24044 KB n=500
34 Correct 17 ms 24044 KB n=500
35 Correct 18 ms 24044 KB n=500
36 Correct 17 ms 24044 KB n=500
37 Correct 18 ms 24044 KB n=500
38 Correct 17 ms 24044 KB n=500
39 Correct 17 ms 24084 KB n=500
40 Correct 17 ms 24044 KB n=500
41 Correct 17 ms 24044 KB n=500
42 Correct 17 ms 24044 KB n=500
43 Correct 17 ms 24044 KB n=500
44 Correct 17 ms 24044 KB n=500
45 Correct 17 ms 24044 KB n=500
46 Correct 17 ms 24044 KB n=500
47 Correct 17 ms 24044 KB n=500
48 Correct 17 ms 24044 KB n=500
49 Correct 17 ms 24044 KB n=500
50 Correct 17 ms 24044 KB n=500
51 Correct 17 ms 24044 KB n=500
52 Correct 17 ms 24044 KB n=500
53 Correct 17 ms 24044 KB n=500
54 Correct 17 ms 24044 KB n=500
55 Correct 17 ms 24044 KB n=278
56 Correct 17 ms 24044 KB n=500
57 Correct 17 ms 24044 KB n=500
58 Correct 17 ms 24044 KB n=500
59 Correct 20 ms 24300 KB n=2000
60 Correct 20 ms 24556 KB n=2000
61 Correct 21 ms 24428 KB n=2000
62 Correct 20 ms 24428 KB n=2000
63 Correct 20 ms 24300 KB n=2000
64 Correct 22 ms 24428 KB n=2000
65 Correct 20 ms 24300 KB n=2000
66 Correct 20 ms 24448 KB n=2000
67 Correct 20 ms 24300 KB n=2000
68 Correct 20 ms 24428 KB n=2000
69 Correct 19 ms 24300 KB n=2000
70 Correct 19 ms 24300 KB n=2000
71 Correct 19 ms 24300 KB n=2000
72 Correct 22 ms 24300 KB n=2000
73 Correct 19 ms 24300 KB n=2000
74 Correct 20 ms 24300 KB n=1844
75 Correct 19 ms 24300 KB n=2000
76 Correct 21 ms 24300 KB n=2000
77 Correct 20 ms 24300 KB n=2000
78 Correct 20 ms 24300 KB n=2000
79 Correct 20 ms 24300 KB n=2000
80 Correct 20 ms 24428 KB n=2000
81 Correct 20 ms 24428 KB n=2000
82 Correct 20 ms 24300 KB n=2000
83 Correct 20 ms 24428 KB n=2000
84 Correct 20 ms 24300 KB n=2000
85 Correct 22 ms 24428 KB n=2000
86 Correct 20 ms 24428 KB n=2000
87 Correct 20 ms 24428 KB n=2000
88 Correct 20 ms 24556 KB n=2000
89 Correct 20 ms 24556 KB n=2000
90 Correct 21 ms 24556 KB n=2000
91 Correct 19 ms 24300 KB n=2000
92 Correct 1085 ms 66616 KB n=200000
93 Correct 1241 ms 73332 KB n=200000
94 Correct 1170 ms 78956 KB n=200000
95 Correct 1022 ms 66352 KB n=200000
96 Correct 1028 ms 66400 KB n=200000
97 Correct 1251 ms 71944 KB n=200000
98 Correct 1029 ms 66492 KB n=200000
99 Correct 1275 ms 65956 KB n=200000
100 Correct 1066 ms 66520 KB n=200000
101 Correct 1158 ms 81004 KB n=200000
102 Correct 614 ms 67308 KB n=200000
103 Correct 598 ms 67436 KB n=200000
104 Correct 602 ms 67308 KB n=200000
105 Correct 606 ms 67180 KB n=200000
106 Correct 601 ms 67180 KB n=200000
107 Correct 598 ms 67308 KB n=200000
108 Correct 1133 ms 66156 KB n=200000
109 Correct 1133 ms 66284 KB n=200000
110 Correct 1135 ms 66372 KB n=200000
111 Correct 1057 ms 66412 KB n=200000
112 Correct 1167 ms 79276 KB n=200000
113 Correct 1257 ms 71816 KB n=200000
114 Correct 1050 ms 66312 KB n=200000
115 Correct 1398 ms 68252 KB n=200000
116 Correct 979 ms 66164 KB n=200000
117 Correct 1144 ms 80192 KB n=200000
118 Correct 1301 ms 69996 KB n=200000
119 Correct 983 ms 66140 KB n=200000
120 Correct 1104 ms 80948 KB n=200000
121 Correct 1105 ms 80784 KB n=200000
122 Correct 1100 ms 81388 KB n=200000
123 Correct 637 ms 66796 KB n=200000
124 Correct 273 ms 37356 KB n=25264