oj.uz

Submission #651218

# Submission time Handle Problem Language Result Execution time Memory
651218 2022-10-18T03:08:24 Z pcc Birthday gift (IZhO18_treearray) C++14
56 / 100
 4000 ms 19108 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define io ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define ld long double
#define _all(T) T.begin(),T.end()
const int mxn = 2e5+10;

vector<int> paths[mxn];
int fa[mxn],link_top[mxn],bs[mxn],sz[mxn],dep[mxn],arr[mxn],adj[mxn];
int segtree[mxn*4+4];

void dfs1(int now,int par){
	fa[now] = par;
	sz[now] = 1;
	for(auto nxt:paths[now]){
		if(nxt == par)continue;
		dep[nxt] = dep[now]+1;
		dfs1(nxt,now);
		if(bs[now] == 0||sz[bs[now]] < sz[nxt])bs[now] = nxt;
		sz[now] += sz[nxt];
	}
	return;
}
void dfs2(int now,int top){
	link_top[now] = top;
	if(bs[now])dfs2(bs[now],top);
	for(auto nxt:paths[now]){
		if(nxt == fa[now]||nxt == bs[now])continue;
		dfs2(nxt,nxt);
	}
	return;
}
int lca(int a,int b){
	int ta = link_top[a],tb = link_top[b];
	while(ta != tb){
		if(dep[ta]<dep[tb]){
			swap(ta,tb);
			swap(a,b);
		}
		a = fa[ta];
		ta = link_top[a];
	}
	if(dep[a]>dep[b])return b;
	else return a;
}
void modify(int now,int l,int r,int p,int v){
	if(l == r){
		segtree[now] = v;
		return;
	}
	int mid = (l+r)>>1;
	if(mid>=p)modify(now*2+1,l,mid,p,v);
	else modify(now*2+2,mid+1,r,p,v);
	segtree[now] = min(segtree[now*2+1],segtree[now*2+2]);
	return;
}
int getval(int now,int l,int r,int s,int e){
	if(s<=l&&e>=r)return segtree[now];
	int mid = (l+r)>>1;
	if(mid>=e)return getval(now*2+1,l,mid,s,e);
	else if(mid<s)return getval(now*2+2,mid+1,r,s,e);
	else return min(getval(now*2+1,l,mid,s,e),getval(now*2+2,mid+1,r,s,e));
}
bool flag = false;
int main(){
	io
	int n,m,q;
	cin>>n>>m>>q;
//	if(m*m*q*__lg(n)>=1e9)return 0;
	for(int i = 0;i<n-1;i++){
		int a,b;
		cin>>a>>b;
		paths[a].push_back(b);
		paths[b].push_back(a);
	}
	dfs1(1,1);
	dfs2(1,1);
	for(int i = 1;i<=m;i++){
		cin>>arr[i];
	}
	for(int i = 2;i<=m;i++){
		adj[i] = lca(arr[i],arr[i-1]);
		modify(0,0,mxn,i,dep[adj[i]]);
	}
//	cout<<dep[lca(arr[1],arr[2])]<<' '<<getval(0,0,mxn,2,2);return 0;
	while(q--){
		int t;
		cin>>t;
		if(t == 1){
			int p,v;
			cin>>p>>v;
			arr[p] = v;
			if(p != 1)adj[p] = lca(arr[p],arr[p-1]);
			if(p != m)adj[p+1] = lca(arr[p],arr[p+1]);
			if(p != 1)modify(0,0,mxn,p,dep[adj[p]]);
			if(p != m)modify(0,0,mxn,p+1,dep[adj[p+1]]);
		}
		else{
			int a,b,c;
			pii ans = {-1,-1};
			cin>>a>>b>>c;
			if(a == 1&&b == 3&&c == 1)flag = true;
			for(int i = a;i<b;i++){
				int l = i+1,r = b;
				while(l < r){
					int mid= (l+r)>>1;
//					if(flag)cout<<l<<' '<<r<<' '<<getval(0,0,mxn,i+1,mid)<<endl;
					if(getval(0,0,mxn,i+1,mid)<=dep[c])r = mid;
					else l = mid+1;
				}
				if(getval(0,0,mxn,i+1,r) == dep[c]&&lca(arr[i],c) == c){
					ans = {i,r};
				}
				if(arr[i] == c)ans = {i,i};
			}
			if(arr[b] == c)ans = {b,b};
			flag = false;
			cout<<ans.fs<<' '<<ans.sc<<'\n';
		}
	}
	return 0;
}
/*
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 3 ms 5076 KB n=5
2 Correct 4 ms 5076 KB n=100
3 Correct 4 ms 5076 KB n=100
4 Correct 5 ms 5028 KB n=100
5 Correct 4 ms 5076 KB n=100
6 Correct 7 ms 5124 KB n=100
7 Correct 7 ms 5028 KB n=100
8 Correct 3 ms 5076 KB n=100
9 Correct 4 ms 5076 KB n=100
10 Correct 5 ms 5076 KB n=100
11 Correct 5 ms 5076 KB n=100
12 Correct 4 ms 5076 KB n=100
13 Correct 4 ms 5076 KB n=100
14 Correct 4 ms 5068 KB n=100
15 Correct 4 ms 5024 KB n=100
16 Correct 4 ms 5076 KB n=100
17 Correct 4 ms 5076 KB n=100
18 Correct 4 ms 5108 KB n=100
19 Correct 4 ms 5076 KB n=100
20 Correct 3 ms 5028 KB n=100
21 Correct 4 ms 5024 KB n=100
22 Correct 4 ms 5076 KB n=100
23 Correct 4 ms 5076 KB n=100
24 Correct 4 ms 5076 KB n=100
25 Correct 5 ms 5076 KB n=100
26 Correct 3 ms 5024 KB n=12
27 Correct 5 ms 5076 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB n=5
2 Correct 4 ms 5076 KB n=100
3 Correct 4 ms 5076 KB n=100
4 Correct 5 ms 5028 KB n=100
5 Correct 4 ms 5076 KB n=100
6 Correct 7 ms 5124 KB n=100
7 Correct 7 ms 5028 KB n=100
8 Correct 3 ms 5076 KB n=100
9 Correct 4 ms 5076 KB n=100
10 Correct 5 ms 5076 KB n=100
11 Correct 5 ms 5076 KB n=100
12 Correct 4 ms 5076 KB n=100
13 Correct 4 ms 5076 KB n=100
14 Correct 4 ms 5068 KB n=100
15 Correct 4 ms 5024 KB n=100
16 Correct 4 ms 5076 KB n=100
17 Correct 4 ms 5076 KB n=100
18 Correct 4 ms 5108 KB n=100
19 Correct 4 ms 5076 KB n=100
20 Correct 3 ms 5028 KB n=100
21 Correct 4 ms 5024 KB n=100
22 Correct 4 ms 5076 KB n=100
23 Correct 4 ms 5076 KB n=100
24 Correct 4 ms 5076 KB n=100
25 Correct 5 ms 5076 KB n=100
26 Correct 3 ms 5024 KB n=12
27 Correct 5 ms 5076 KB n=100
28 Correct 32 ms 5076 KB n=500
29 Correct 35 ms 5076 KB n=500
30 Correct 30 ms 5168 KB n=500
31 Correct 33 ms 5168 KB n=500
32 Correct 34 ms 5076 KB n=500
33 Correct 33 ms 5156 KB n=500
34 Correct 34 ms 5140 KB n=500
35 Correct 32 ms 5076 KB n=500
36 Correct 175 ms 5136 KB n=500
37 Correct 169 ms 5076 KB n=500
38 Correct 172 ms 5140 KB n=500
39 Correct 35 ms 5076 KB n=500
40 Correct 33 ms 5164 KB n=500
41 Correct 33 ms 5164 KB n=500
42 Correct 86 ms 5140 KB n=500
43 Correct 87 ms 5140 KB n=500
44 Correct 85 ms 5076 KB n=500
45 Correct 29 ms 5144 KB n=500
46 Correct 32 ms 5076 KB n=500
47 Correct 29 ms 5160 KB n=500
48 Correct 27 ms 5076 KB n=500
49 Correct 29 ms 5168 KB n=500
50 Correct 29 ms 5076 KB n=500
51 Correct 31 ms 5168 KB n=500
52 Correct 35 ms 5076 KB n=500
53 Correct 33 ms 5076 KB n=500
54 Correct 83 ms 5176 KB n=500
55 Correct 13 ms 5144 KB n=278
56 Correct 83 ms 5172 KB n=500
57 Correct 86 ms 5172 KB n=500
58 Correct 74 ms 5044 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB n=5
2 Correct 4 ms 5076 KB n=100
3 Correct 4 ms 5076 KB n=100
4 Correct 5 ms 5028 KB n=100
5 Correct 4 ms 5076 KB n=100
6 Correct 7 ms 5124 KB n=100
7 Correct 7 ms 5028 KB n=100
8 Correct 3 ms 5076 KB n=100
9 Correct 4 ms 5076 KB n=100
10 Correct 5 ms 5076 KB n=100
11 Correct 5 ms 5076 KB n=100
12 Correct 4 ms 5076 KB n=100
13 Correct 4 ms 5076 KB n=100
14 Correct 4 ms 5068 KB n=100
15 Correct 4 ms 5024 KB n=100
16 Correct 4 ms 5076 KB n=100
17 Correct 4 ms 5076 KB n=100
18 Correct 4 ms 5108 KB n=100
19 Correct 4 ms 5076 KB n=100
20 Correct 3 ms 5028 KB n=100
21 Correct 4 ms 5024 KB n=100
22 Correct 4 ms 5076 KB n=100
23 Correct 4 ms 5076 KB n=100
24 Correct 4 ms 5076 KB n=100
25 Correct 5 ms 5076 KB n=100
26 Correct 3 ms 5024 KB n=12
27 Correct 5 ms 5076 KB n=100
28 Correct 32 ms 5076 KB n=500
29 Correct 35 ms 5076 KB n=500
30 Correct 30 ms 5168 KB n=500
31 Correct 33 ms 5168 KB n=500
32 Correct 34 ms 5076 KB n=500
33 Correct 33 ms 5156 KB n=500
34 Correct 34 ms 5140 KB n=500
35 Correct 32 ms 5076 KB n=500
36 Correct 175 ms 5136 KB n=500
37 Correct 169 ms 5076 KB n=500
38 Correct 172 ms 5140 KB n=500
39 Correct 35 ms 5076 KB n=500
40 Correct 33 ms 5164 KB n=500
41 Correct 33 ms 5164 KB n=500
42 Correct 86 ms 5140 KB n=500
43 Correct 87 ms 5140 KB n=500
44 Correct 85 ms 5076 KB n=500
45 Correct 29 ms 5144 KB n=500
46 Correct 32 ms 5076 KB n=500
47 Correct 29 ms 5160 KB n=500
48 Correct 27 ms 5076 KB n=500
49 Correct 29 ms 5168 KB n=500
50 Correct 29 ms 5076 KB n=500
51 Correct 31 ms 5168 KB n=500
52 Correct 35 ms 5076 KB n=500
53 Correct 33 ms 5076 KB n=500
54 Correct 83 ms 5176 KB n=500
55 Correct 13 ms 5144 KB n=278
56 Correct 83 ms 5172 KB n=500
57 Correct 86 ms 5172 KB n=500
58 Correct 74 ms 5044 KB n=500
59 Correct 638 ms 5408 KB n=2000
60 Correct 641 ms 5436 KB n=2000
61 Correct 665 ms 5376 KB n=2000
62 Correct 674 ms 5332 KB n=2000
63 Correct 711 ms 5284 KB n=2000
64 Correct 735 ms 5344 KB n=2000
65 Correct 727 ms 5416 KB n=2000
66 Correct 699 ms 5292 KB n=2000
67 Correct 677 ms 5408 KB n=2000
68 Correct 659 ms 5360 KB n=2000
69 Correct 3869 ms 5296 KB n=2000
70 Correct 3849 ms 5452 KB n=2000
71 Correct 3860 ms 5404 KB n=2000
72 Correct 759 ms 5292 KB n=2000
73 Correct 742 ms 5288 KB n=2000
74 Correct 525 ms 5268 KB n=1844
75 Correct 757 ms 5324 KB n=2000
76 Correct 1941 ms 5284 KB n=2000
77 Correct 1916 ms 5280 KB n=2000
78 Correct 2056 ms 5408 KB n=2000
79 Correct 571 ms 5272 KB n=2000
80 Correct 575 ms 5408 KB n=2000
81 Correct 579 ms 5332 KB n=2000
82 Correct 566 ms 5292 KB n=2000
83 Correct 558 ms 5392 KB n=2000
84 Correct 669 ms 5284 KB n=2000
85 Correct 679 ms 5336 KB n=2000
86 Correct 716 ms 5332 KB n=2000
87 Correct 686 ms 5300 KB n=2000
88 Correct 2260 ms 5432 KB n=2000
89 Correct 2340 ms 5436 KB n=2000
90 Correct 1736 ms 5560 KB n=2000
91 Correct 1715 ms 5416 KB n=2000

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB n=5
2 Correct 4 ms 5076 KB n=100
3 Correct 4 ms 5076 KB n=100
4 Correct 5 ms 5028 KB n=100
5 Correct 4 ms 5076 KB n=100
6 Correct 7 ms 5124 KB n=100
7 Correct 7 ms 5028 KB n=100
8 Correct 3 ms 5076 KB n=100
9 Correct 4 ms 5076 KB n=100
10 Correct 5 ms 5076 KB n=100
11 Correct 5 ms 5076 KB n=100
12 Correct 4 ms 5076 KB n=100
13 Correct 4 ms 5076 KB n=100
14 Correct 4 ms 5068 KB n=100
15 Correct 4 ms 5024 KB n=100
16 Correct 4 ms 5076 KB n=100
17 Correct 4 ms 5076 KB n=100
18 Correct 4 ms 5108 KB n=100
19 Correct 4 ms 5076 KB n=100
20 Correct 3 ms 5028 KB n=100
21 Correct 4 ms 5024 KB n=100
22 Correct 4 ms 5076 KB n=100
23 Correct 4 ms 5076 KB n=100
24 Correct 4 ms 5076 KB n=100
25 Correct 5 ms 5076 KB n=100
26 Correct 3 ms 5024 KB n=12
27 Correct 5 ms 5076 KB n=100
28 Correct 32 ms 5076 KB n=500
29 Correct 35 ms 5076 KB n=500
30 Correct 30 ms 5168 KB n=500
31 Correct 33 ms 5168 KB n=500
32 Correct 34 ms 5076 KB n=500
33 Correct 33 ms 5156 KB n=500
34 Correct 34 ms 5140 KB n=500
35 Correct 32 ms 5076 KB n=500
36 Correct 175 ms 5136 KB n=500
37 Correct 169 ms 5076 KB n=500
38 Correct 172 ms 5140 KB n=500
39 Correct 35 ms 5076 KB n=500
40 Correct 33 ms 5164 KB n=500
41 Correct 33 ms 5164 KB n=500
42 Correct 86 ms 5140 KB n=500
43 Correct 87 ms 5140 KB n=500
44 Correct 85 ms 5076 KB n=500
45 Correct 29 ms 5144 KB n=500
46 Correct 32 ms 5076 KB n=500
47 Correct 29 ms 5160 KB n=500
48 Correct 27 ms 5076 KB n=500
49 Correct 29 ms 5168 KB n=500
50 Correct 29 ms 5076 KB n=500
51 Correct 31 ms 5168 KB n=500
52 Correct 35 ms 5076 KB n=500
53 Correct 33 ms 5076 KB n=500
54 Correct 83 ms 5176 KB n=500
55 Correct 13 ms 5144 KB n=278
56 Correct 83 ms 5172 KB n=500
57 Correct 86 ms 5172 KB n=500
58 Correct 74 ms 5044 KB n=500
59 Correct 638 ms 5408 KB n=2000
60 Correct 641 ms 5436 KB n=2000
61 Correct 665 ms 5376 KB n=2000
62 Correct 674 ms 5332 KB n=2000
63 Correct 711 ms 5284 KB n=2000
64 Correct 735 ms 5344 KB n=2000
65 Correct 727 ms 5416 KB n=2000
66 Correct 699 ms 5292 KB n=2000
67 Correct 677 ms 5408 KB n=2000
68 Correct 659 ms 5360 KB n=2000
69 Correct 3869 ms 5296 KB n=2000
70 Correct 3849 ms 5452 KB n=2000
71 Correct 3860 ms 5404 KB n=2000
72 Correct 759 ms 5292 KB n=2000
73 Correct 742 ms 5288 KB n=2000
74 Correct 525 ms 5268 KB n=1844
75 Correct 757 ms 5324 KB n=2000
76 Correct 1941 ms 5284 KB n=2000
77 Correct 1916 ms 5280 KB n=2000
78 Correct 2056 ms 5408 KB n=2000
79 Correct 571 ms 5272 KB n=2000
80 Correct 575 ms 5408 KB n=2000
81 Correct 579 ms 5332 KB n=2000
82 Correct 566 ms 5292 KB n=2000
83 Correct 558 ms 5392 KB n=2000
84 Correct 669 ms 5284 KB n=2000
85 Correct 679 ms 5336 KB n=2000
86 Correct 716 ms 5332 KB n=2000
87 Correct 686 ms 5300 KB n=2000
88 Correct 2260 ms 5432 KB n=2000
89 Correct 2340 ms 5436 KB n=2000
90 Correct 1736 ms 5560 KB n=2000
91 Correct 1715 ms 5416 KB n=2000
92 Execution timed out 4065 ms 19108 KB Time limit exceeded
93 Halted 0 ms 0 KB -