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Submission #167641

# Submission time Handle Problem Language Result Execution time Memory
167641 2019-12-09T07:58:12 Z HungAnhGoldIBO2020 Birthday gift (IZhO18_treearray) C++14
100 / 100
 1342 ms 73208 KB 
#include<bits/stdc++.h>
using namespace std;
const int N=2e5+1;
const int LOG=18;
set<pair<int,int> > lis[N];
vector<int> adj[N];
int level[N],ancestor[LOG][N],ar[N],lef,rig;
void dfs(int x,int p){
	for(int i=1;i<LOG;i++){
		ancestor[i][x]=ancestor[i-1][ancestor[i-1][x]];
	}
	for(auto i:adj[x]){
		if(i!=p){
			level[i]=level[x]+1;
			ancestor[0][i]=x;
			dfs(i,x);
		}
	}
}
int findd(int x,int k){
	while(k){
		int y=__lg(k);
		x=ancestor[y][x];
		k-=(1<<y);
	}
	return x;
}
int LCA(int x,int y){
	if(level[x]>level[y]){
		x=findd(x,level[x]-level[y]);
	}
	y=findd(y,level[y]-level[x]);
	if(x==y){
		return x;
	}
	for(int i=LOG-1;i>-1;i--){
	 	if(ancestor[i][x]!=ancestor[i][y]){
	 		x=ancestor[i][x],y=ancestor[i][y];
		}
	}
	return ancestor[0][x];
}
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n,i,j,k,l,m,q;
	cin>>n>>m>>q;
	for(i=1;i<n;i++){
		cin>>j>>k;
		adj[j].push_back(k);
		adj[k].push_back(j);
	}
	dfs(1,1);
	for(i=1;i<=m;i++){
		cin>>ar[i];
		lis[ar[i]].insert({i,i});
		if(i>1){
			lis[LCA(ar[i-1],ar[i])].insert({i-1,i});
		}
	}
	for(i=1;i<=q;i++){
		cin>>j;
		if(j==1){
			cin>>k>>l;
			lis[ar[k]].erase({k,k});
			if(k>1){
				lis[LCA(ar[k-1],ar[k])].erase({k-1,k});
			}
			if(k<m){
				lis[LCA(ar[k],ar[k+1])].erase({k,k+1});
			}
			ar[k]=l;
			lis[ar[k]].insert({k,k});
			if(k>1){
				lis[LCA(ar[k-1],ar[k])].insert({k-1,k});
			}
			if(k<m){
				lis[LCA(ar[k],ar[k+1])].insert({k,k+1});
			}
		}
		else{
			cin>>j>>k>>l;
			auto ite=lis[l].lower_bound({j,0});
			if(ite==lis[l].end()){
				lef=rig=-1;
			}
			else{
				if(ite->second<=k){
					lef=ite->first;
					rig=ite->second;
				}
				else{
					lef=rig=-1;
				}
			}
			cout<<lef<<' '<<rig<<'\n';
		}
	}
}
/*
5 4 4
1 2
3 1
3 4
5 3
4 5 2 3
2 1 3 1
1 3 5
2 3 4 5
2 1 3 1
*/

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14584 KB n=5
2 Correct 14 ms 14584 KB n=100
3 Correct 14 ms 14584 KB n=100
4 Correct 14 ms 14584 KB n=100
5 Correct 14 ms 14584 KB n=100
6 Correct 14 ms 14584 KB n=100
7 Correct 14 ms 14584 KB n=100
8 Correct 14 ms 14584 KB n=100
9 Correct 14 ms 14584 KB n=100
10 Correct 14 ms 14584 KB n=100
11 Correct 15 ms 14592 KB n=100
12 Correct 14 ms 14588 KB n=100
13 Correct 14 ms 14584 KB n=100
14 Correct 14 ms 14584 KB n=100
15 Correct 14 ms 14584 KB n=100
16 Correct 14 ms 14584 KB n=100
17 Correct 14 ms 14584 KB n=100
18 Correct 15 ms 14584 KB n=100
19 Correct 14 ms 14584 KB n=100
20 Correct 14 ms 14584 KB n=100
21 Correct 14 ms 14584 KB n=100
22 Correct 14 ms 14588 KB n=100
23 Correct 14 ms 14584 KB n=100
24 Correct 14 ms 14584 KB n=100
25 Correct 14 ms 14584 KB n=100
26 Correct 14 ms 14584 KB n=12
27 Correct 14 ms 14584 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14584 KB n=5
2 Correct 14 ms 14584 KB n=100
3 Correct 14 ms 14584 KB n=100
4 Correct 14 ms 14584 KB n=100
5 Correct 14 ms 14584 KB n=100
6 Correct 14 ms 14584 KB n=100
7 Correct 14 ms 14584 KB n=100
8 Correct 14 ms 14584 KB n=100
9 Correct 14 ms 14584 KB n=100
10 Correct 14 ms 14584 KB n=100
11 Correct 15 ms 14592 KB n=100
12 Correct 14 ms 14588 KB n=100
13 Correct 14 ms 14584 KB n=100
14 Correct 14 ms 14584 KB n=100
15 Correct 14 ms 14584 KB n=100
16 Correct 14 ms 14584 KB n=100
17 Correct 14 ms 14584 KB n=100
18 Correct 15 ms 14584 KB n=100
19 Correct 14 ms 14584 KB n=100
20 Correct 14 ms 14584 KB n=100
21 Correct 14 ms 14584 KB n=100
22 Correct 14 ms 14588 KB n=100
23 Correct 14 ms 14584 KB n=100
24 Correct 14 ms 14584 KB n=100
25 Correct 14 ms 14584 KB n=100
26 Correct 14 ms 14584 KB n=12
27 Correct 14 ms 14584 KB n=100
28 Correct 15 ms 14584 KB n=500
29 Correct 15 ms 14712 KB n=500
30 Correct 15 ms 14688 KB n=500
31 Correct 15 ms 14584 KB n=500
32 Correct 15 ms 14712 KB n=500
33 Correct 15 ms 14584 KB n=500
34 Correct 14 ms 14584 KB n=500
35 Correct 15 ms 14840 KB n=500
36 Correct 15 ms 14740 KB n=500
37 Correct 15 ms 14712 KB n=500
38 Correct 15 ms 14712 KB n=500
39 Correct 15 ms 14712 KB n=500
40 Correct 15 ms 14684 KB n=500
41 Correct 15 ms 14584 KB n=500
42 Correct 15 ms 14712 KB n=500
43 Correct 15 ms 14584 KB n=500
44 Correct 15 ms 14588 KB n=500
45 Correct 15 ms 14712 KB n=500
46 Correct 15 ms 14584 KB n=500
47 Correct 15 ms 14584 KB n=500
48 Correct 15 ms 14584 KB n=500
49 Correct 15 ms 14584 KB n=500
50 Correct 15 ms 14712 KB n=500
51 Correct 15 ms 14596 KB n=500
52 Correct 15 ms 14716 KB n=500
53 Correct 15 ms 14712 KB n=500
54 Correct 15 ms 14712 KB n=500
55 Correct 15 ms 14584 KB n=278
56 Correct 15 ms 14712 KB n=500
57 Correct 15 ms 14712 KB n=500
58 Correct 15 ms 14584 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14584 KB n=5
2 Correct 14 ms 14584 KB n=100
3 Correct 14 ms 14584 KB n=100
4 Correct 14 ms 14584 KB n=100
5 Correct 14 ms 14584 KB n=100
6 Correct 14 ms 14584 KB n=100
7 Correct 14 ms 14584 KB n=100
8 Correct 14 ms 14584 KB n=100
9 Correct 14 ms 14584 KB n=100
10 Correct 14 ms 14584 KB n=100
11 Correct 15 ms 14592 KB n=100
12 Correct 14 ms 14588 KB n=100
13 Correct 14 ms 14584 KB n=100
14 Correct 14 ms 14584 KB n=100
15 Correct 14 ms 14584 KB n=100
16 Correct 14 ms 14584 KB n=100
17 Correct 14 ms 14584 KB n=100
18 Correct 15 ms 14584 KB n=100
19 Correct 14 ms 14584 KB n=100
20 Correct 14 ms 14584 KB n=100
21 Correct 14 ms 14584 KB n=100
22 Correct 14 ms 14588 KB n=100
23 Correct 14 ms 14584 KB n=100
24 Correct 14 ms 14584 KB n=100
25 Correct 14 ms 14584 KB n=100
26 Correct 14 ms 14584 KB n=12
27 Correct 14 ms 14584 KB n=100
28 Correct 15 ms 14584 KB n=500
29 Correct 15 ms 14712 KB n=500
30 Correct 15 ms 14688 KB n=500
31 Correct 15 ms 14584 KB n=500
32 Correct 15 ms 14712 KB n=500
33 Correct 15 ms 14584 KB n=500
34 Correct 14 ms 14584 KB n=500
35 Correct 15 ms 14840 KB n=500
36 Correct 15 ms 14740 KB n=500
37 Correct 15 ms 14712 KB n=500
38 Correct 15 ms 14712 KB n=500
39 Correct 15 ms 14712 KB n=500
40 Correct 15 ms 14684 KB n=500
41 Correct 15 ms 14584 KB n=500
42 Correct 15 ms 14712 KB n=500
43 Correct 15 ms 14584 KB n=500
44 Correct 15 ms 14588 KB n=500
45 Correct 15 ms 14712 KB n=500
46 Correct 15 ms 14584 KB n=500
47 Correct 15 ms 14584 KB n=500
48 Correct 15 ms 14584 KB n=500
49 Correct 15 ms 14584 KB n=500
50 Correct 15 ms 14712 KB n=500
51 Correct 15 ms 14596 KB n=500
52 Correct 15 ms 14716 KB n=500
53 Correct 15 ms 14712 KB n=500
54 Correct 15 ms 14712 KB n=500
55 Correct 15 ms 14584 KB n=278
56 Correct 15 ms 14712 KB n=500
57 Correct 15 ms 14712 KB n=500
58 Correct 15 ms 14584 KB n=500
59 Correct 18 ms 14968 KB n=2000
60 Correct 18 ms 15016 KB n=2000
61 Correct 18 ms 14968 KB n=2000
62 Correct 19 ms 14972 KB n=2000
63 Correct 18 ms 14888 KB n=2000
64 Correct 18 ms 14968 KB n=2000
65 Correct 18 ms 14968 KB n=2000
66 Correct 18 ms 15096 KB n=2000
67 Correct 19 ms 14968 KB n=2000
68 Correct 18 ms 14968 KB n=2000
69 Correct 17 ms 14940 KB n=2000
70 Correct 17 ms 14968 KB n=2000
71 Correct 17 ms 14968 KB n=2000
72 Correct 17 ms 14968 KB n=2000
73 Correct 17 ms 14968 KB n=2000
74 Correct 18 ms 14968 KB n=1844
75 Correct 17 ms 14968 KB n=2000
76 Correct 19 ms 14968 KB n=2000
77 Correct 18 ms 14992 KB n=2000
78 Correct 18 ms 15096 KB n=2000
79 Correct 18 ms 14968 KB n=2000
80 Correct 17 ms 14968 KB n=2000
81 Correct 18 ms 15000 KB n=2000
82 Correct 17 ms 14968 KB n=2000
83 Correct 18 ms 15016 KB n=2000
84 Correct 18 ms 14968 KB n=2000
85 Correct 18 ms 15016 KB n=2000
86 Correct 18 ms 14968 KB n=2000
87 Correct 19 ms 14940 KB n=2000
88 Correct 18 ms 15096 KB n=2000
89 Correct 18 ms 15072 KB n=2000
90 Correct 18 ms 14968 KB n=2000
91 Correct 17 ms 14968 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14584 KB n=5
2 Correct 14 ms 14584 KB n=100
3 Correct 14 ms 14584 KB n=100
4 Correct 14 ms 14584 KB n=100
5 Correct 14 ms 14584 KB n=100
6 Correct 14 ms 14584 KB n=100
7 Correct 14 ms 14584 KB n=100
8 Correct 14 ms 14584 KB n=100
9 Correct 14 ms 14584 KB n=100
10 Correct 14 ms 14584 KB n=100
11 Correct 15 ms 14592 KB n=100
12 Correct 14 ms 14588 KB n=100
13 Correct 14 ms 14584 KB n=100
14 Correct 14 ms 14584 KB n=100
15 Correct 14 ms 14584 KB n=100
16 Correct 14 ms 14584 KB n=100
17 Correct 14 ms 14584 KB n=100
18 Correct 15 ms 14584 KB n=100
19 Correct 14 ms 14584 KB n=100
20 Correct 14 ms 14584 KB n=100
21 Correct 14 ms 14584 KB n=100
22 Correct 14 ms 14588 KB n=100
23 Correct 14 ms 14584 KB n=100
24 Correct 14 ms 14584 KB n=100
25 Correct 14 ms 14584 KB n=100
26 Correct 14 ms 14584 KB n=12
27 Correct 14 ms 14584 KB n=100
28 Correct 15 ms 14584 KB n=500
29 Correct 15 ms 14712 KB n=500
30 Correct 15 ms 14688 KB n=500
31 Correct 15 ms 14584 KB n=500
32 Correct 15 ms 14712 KB n=500
33 Correct 15 ms 14584 KB n=500
34 Correct 14 ms 14584 KB n=500
35 Correct 15 ms 14840 KB n=500
36 Correct 15 ms 14740 KB n=500
37 Correct 15 ms 14712 KB n=500
38 Correct 15 ms 14712 KB n=500
39 Correct 15 ms 14712 KB n=500
40 Correct 15 ms 14684 KB n=500
41 Correct 15 ms 14584 KB n=500
42 Correct 15 ms 14712 KB n=500
43 Correct 15 ms 14584 KB n=500
44 Correct 15 ms 14588 KB n=500
45 Correct 15 ms 14712 KB n=500
46 Correct 15 ms 14584 KB n=500
47 Correct 15 ms 14584 KB n=500
48 Correct 15 ms 14584 KB n=500
49 Correct 15 ms 14584 KB n=500
50 Correct 15 ms 14712 KB n=500
51 Correct 15 ms 14596 KB n=500
52 Correct 15 ms 14716 KB n=500
53 Correct 15 ms 14712 KB n=500
54 Correct 15 ms 14712 KB n=500
55 Correct 15 ms 14584 KB n=278
56 Correct 15 ms 14712 KB n=500
57 Correct 15 ms 14712 KB n=500
58 Correct 15 ms 14584 KB n=500
59 Correct 18 ms 14968 KB n=2000
60 Correct 18 ms 15016 KB n=2000
61 Correct 18 ms 14968 KB n=2000
62 Correct 19 ms 14972 KB n=2000
63 Correct 18 ms 14888 KB n=2000
64 Correct 18 ms 14968 KB n=2000
65 Correct 18 ms 14968 KB n=2000
66 Correct 18 ms 15096 KB n=2000
67 Correct 19 ms 14968 KB n=2000
68 Correct 18 ms 14968 KB n=2000
69 Correct 17 ms 14940 KB n=2000
70 Correct 17 ms 14968 KB n=2000
71 Correct 17 ms 14968 KB n=2000
72 Correct 17 ms 14968 KB n=2000
73 Correct 17 ms 14968 KB n=2000
74 Correct 18 ms 14968 KB n=1844
75 Correct 17 ms 14968 KB n=2000
76 Correct 19 ms 14968 KB n=2000
77 Correct 18 ms 14992 KB n=2000
78 Correct 18 ms 15096 KB n=2000
79 Correct 18 ms 14968 KB n=2000
80 Correct 17 ms 14968 KB n=2000
81 Correct 18 ms 15000 KB n=2000
82 Correct 17 ms 14968 KB n=2000
83 Correct 18 ms 15016 KB n=2000
84 Correct 18 ms 14968 KB n=2000
85 Correct 18 ms 15016 KB n=2000
86 Correct 18 ms 14968 KB n=2000
87 Correct 19 ms 14940 KB n=2000
88 Correct 18 ms 15096 KB n=2000
89 Correct 18 ms 15072 KB n=2000
90 Correct 18 ms 14968 KB n=2000
91 Correct 17 ms 14968 KB n=2000
92 Correct 926 ms 60652 KB n=200000
93 Correct 1342 ms 68324 KB n=200000
94 Correct 1231 ms 71316 KB n=200000
95 Correct 968 ms 61232 KB n=200000
96 Correct 914 ms 61116 KB n=200000
97 Correct 1130 ms 67420 KB n=200000
98 Correct 895 ms 61548 KB n=200000
99 Correct 1219 ms 63896 KB n=200000
100 Correct 932 ms 62960 KB n=200000
101 Correct 1016 ms 73208 KB n=200000
102 Correct 590 ms 64860 KB n=200000
103 Correct 607 ms 64760 KB n=200000
104 Correct 524 ms 64760 KB n=200000
105 Correct 563 ms 65144 KB n=200000
106 Correct 571 ms 65016 KB n=200000
107 Correct 568 ms 65144 KB n=200000
108 Correct 970 ms 63580 KB n=200000
109 Correct 1031 ms 63548 KB n=200000
110 Correct 1006 ms 63480 KB n=200000
111 Correct 873 ms 63008 KB n=200000
112 Correct 1102 ms 72184 KB n=200000
113 Correct 1171 ms 67704 KB n=200000
114 Correct 881 ms 63080 KB n=200000
115 Correct 1295 ms 65400 KB n=200000
116 Correct 832 ms 63160 KB n=200000
117 Correct 1149 ms 72496 KB n=200000
118 Correct 1182 ms 66552 KB n=200000
119 Correct 815 ms 63592 KB n=200000
120 Correct 1031 ms 72056 KB n=200000
121 Correct 1112 ms 72132 KB n=200000
122 Correct 1035 ms 72528 KB n=200000
123 Correct 584 ms 64888 KB n=200000
124 Correct 211 ms 29304 KB n=25264