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Submission #868890

# Submission time Handle Problem Language Result Execution time Memory
868890 2023-11-02T11:55:01 Z pcc Klasika (COCI20_klasika) C++14
110 / 110
 799 ms 196332 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 tlll tuple<ll,ll,ll>
#define tiii tuple<int,int,int>
 
const int mxn = 2e5+10;
const int magic = 750;
const int SZ = mxn*150;
int head[mxn],nedge[mxn],dir[mxn];
bitset<mxn> active;
int arr[mxn],dp[mxn];
pii eul[mxn];
pii trie[SZ];
int brr[mxn];
int segtree[mxn*4];
int ppp = 0;
int ptr = 0;
int C = 0;
tiii req[mxn];
 
void addedge(int s,int e){
	ptr++;
	nedge[ptr] = head[s];
	head[s] = ptr;
	dir[ptr] = e;
	return;
}
 
int newnode(){
	assert(++ppp<SZ);
	return ppp;
}
void add(int now,int val){
	for(int i = 30;i>=0;i--){
		if(val&(1<<i)){
			if(!trie[now].sc)trie[now].sc = newnode();
			now = trie[now].sc;
		}
		else{
			if(!trie[now].fs)trie[now].fs = newnode();
			now = trie[now].fs;
		}
	}
	return;
}
int getbig(int now,int tar){
	int re = 0;
	if(!trie[now].fs&&!trie[now].sc)return -1;
	for(int i = 30;i>=0;i--){
		if(tar&(1<<i)){
			if(trie[now].fs)now = trie[now].fs,re^=1<<i;
			else now = trie[now].sc;
		}
		else{
			if(trie[now].sc)now = trie[now].sc,re^=1<<i;
			else now = trie[now].fs;
		}
	}
	return re;
}
 
void modify(int now,int l,int r,int p,int v){
	if(r-l<magic)return;
	if(!segtree[now])segtree[now] = newnode();
	add(segtree[now],v);
	if(l == r)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);
	return;
}
int getans(int now,int l,int r,int s,int e,int tar){
	if(r-l<magic*2){
		int re = -1;
		//cout<<l<<' '<<r<<' '<<s<<' '<<e<<' '<<tar<<endl;
		for(int i = max(l,s);i<=min(e,r);i++){
			if(!active[i])continue;
			re = max(re,brr[i]^tar);
		}
		return re;
	}
 
	if(l>=s&&e>=r)return getbig(segtree[now],tar);
	int mid = (l+r)>>1;
	if(mid>=e)return getans(now*2+1,l,mid,s,e,tar);
	else if(mid<s)return getans(now*2+2,mid+1,r,s,e,tar);
	else return max(getans(now*2+1,l,mid,s,e,tar),getans(now*2+2,mid+1,r,s,e,tar));
}
 
void dfs(int now){
	dp[now] ^= arr[now];
	eul[now].fs = ++C;
	while(head[now] != 0){
		int tmp = head[now];
		int nxt = dir[tmp];
		dp[nxt] ^= dp[now];
		dfs(nxt);
		head[now] = nedge[tmp];
	}
	eul[now].sc = C;
	return;
}
 
int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int q;
	cin>>q;
	C = 1;
	for(int i = 0;i<q;i++){
		string s;
		cin>>s>>get<1>(req[i])>>get<2>(req[i]);
		if(s[0] == 'A')get<0>(req[i]) = 0;
		else get<0>(req[i]) = 1;
		if(get<0>(req[i]) == 0){
			addedge(get<1>(req[i]),++C);
			get<1>(req[i]) = C;
			arr[C] = get<2>(req[i]);
		}
	}
	C = 0;
	dfs(1);
	for(int i = 1;i<=C;i++){
		brr[eul[i].fs] = dp[i];
	}
	active[eul[1].fs] = true;
	modify(0,0,C,eul[1].fs,0);
	/*
	for(int i = 1;i<=C;i++){
		cout<<eul[i].fs<<','<<eul[i].sc<<' ';
	}cout<<endl;
 
   */
	for(int i = 0;i<q;i++){
		if(!get<0>(req[i])){
			int p = get<1>(req[i]);
			active[eul[p].fs] = true;
			modify(0,0,C,eul[p].fs,dp[p]);
		}
		else{
			int a = get<1>(req[i]),b = get<2>(req[i]);
			cout<<getans(0,0,C,eul[b].fs,eul[b].sc,dp[a])<<'\n';
		}
	}
	return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8672 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8536 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8672 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8536 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 2 ms 8540 KB Output is correct
14 Correct 2 ms 8796 KB Output is correct
15 Correct 2 ms 8928 KB Output is correct
16 Correct 3 ms 9304 KB Output is correct
17 Correct 2 ms 8540 KB Output is correct
18 Correct 2 ms 8796 KB Output is correct
19 Correct 2 ms 8796 KB Output is correct
20 Correct 2 ms 9052 KB Output is correct
21 Correct 2 ms 8540 KB Output is correct
22 Correct 2 ms 8796 KB Output is correct
23 Correct 2 ms 8792 KB Output is correct
24 Correct 2 ms 9052 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 660 ms 49680 KB Output is correct
2 Correct 641 ms 96080 KB Output is correct
3 Correct 682 ms 153244 KB Output is correct
4 Correct 580 ms 196332 KB Output is correct
5 Correct 746 ms 47440 KB Output is correct
6 Correct 736 ms 91236 KB Output is correct
7 Correct 747 ms 146260 KB Output is correct
8 Correct 799 ms 186608 KB Output is correct
9 Correct 658 ms 47352 KB Output is correct
10 Correct 676 ms 92212 KB Output is correct
11 Correct 639 ms 147700 KB Output is correct
12 Correct 677 ms 188244 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8672 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8536 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 2 ms 8540 KB Output is correct
14 Correct 2 ms 8796 KB Output is correct
15 Correct 2 ms 8928 KB Output is correct
16 Correct 3 ms 9304 KB Output is correct
17 Correct 2 ms 8540 KB Output is correct
18 Correct 2 ms 8796 KB Output is correct
19 Correct 2 ms 8796 KB Output is correct
20 Correct 2 ms 9052 KB Output is correct
21 Correct 2 ms 8540 KB Output is correct
22 Correct 2 ms 8796 KB Output is correct
23 Correct 2 ms 8792 KB Output is correct
24 Correct 2 ms 9052 KB Output is correct
25 Correct 660 ms 49680 KB Output is correct
26 Correct 641 ms 96080 KB Output is correct
27 Correct 682 ms 153244 KB Output is correct
28 Correct 580 ms 196332 KB Output is correct
29 Correct 746 ms 47440 KB Output is correct
30 Correct 736 ms 91236 KB Output is correct
31 Correct 747 ms 146260 KB Output is correct
32 Correct 799 ms 186608 KB Output is correct
33 Correct 658 ms 47352 KB Output is correct
34 Correct 676 ms 92212 KB Output is correct
35 Correct 639 ms 147700 KB Output is correct
36 Correct 677 ms 188244 KB Output is correct
37 Correct 413 ms 49748 KB Output is correct
38 Correct 463 ms 95848 KB Output is correct
39 Correct 493 ms 154220 KB Output is correct
40 Correct 505 ms 196320 KB Output is correct
41 Correct 127 ms 47112 KB Output is correct
42 Correct 247 ms 90964 KB Output is correct
43 Correct 432 ms 146120 KB Output is correct
44 Correct 551 ms 186188 KB Output is correct
45 Correct 221 ms 47184 KB Output is correct
46 Correct 277 ms 91840 KB Output is correct
47 Correct 385 ms 146996 KB Output is correct
48 Correct 445 ms 188388 KB Output is correct