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Submission #868791

# Submission time Handle Problem Language Result Execution time Memory
868791 2023-11-02T02:28:42 Z pcc Klasika (COCI20_klasika) C++14
110 / 110
 960 ms 200276 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 = 1000;
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 2 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8536 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 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 8536 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 2 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8536 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 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 8536 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 8540 KB Output is correct
15 Correct 2 ms 8796 KB Output is correct
16 Correct 3 ms 8796 KB Output is correct
17 Correct 2 ms 8540 KB Output is correct
18 Correct 2 ms 8536 KB Output is correct
19 Correct 2 ms 8792 KB Output is correct
20 Correct 3 ms 8872 KB Output is correct
21 Correct 2 ms 8540 KB Output is correct
22 Correct 2 ms 8540 KB Output is correct
23 Correct 2 ms 8796 KB Output is correct
24 Correct 2 ms 8792 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 679 ms 49508 KB Output is correct
2 Correct 709 ms 96188 KB Output is correct
3 Correct 716 ms 133204 KB Output is correct
4 Correct 617 ms 196104 KB Output is correct
5 Correct 716 ms 50064 KB Output is correct
6 Correct 787 ms 94332 KB Output is correct
7 Correct 960 ms 129616 KB Output is correct
8 Correct 773 ms 190136 KB Output is correct
9 Correct 671 ms 50192 KB Output is correct
10 Correct 714 ms 95148 KB Output is correct
11 Correct 771 ms 131372 KB Output is correct
12 Correct 644 ms 192324 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8536 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 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 8536 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 8540 KB Output is correct
15 Correct 2 ms 8796 KB Output is correct
16 Correct 3 ms 8796 KB Output is correct
17 Correct 2 ms 8540 KB Output is correct
18 Correct 2 ms 8536 KB Output is correct
19 Correct 2 ms 8792 KB Output is correct
20 Correct 3 ms 8872 KB Output is correct
21 Correct 2 ms 8540 KB Output is correct
22 Correct 2 ms 8540 KB Output is correct
23 Correct 2 ms 8796 KB Output is correct
24 Correct 2 ms 8792 KB Output is correct
25 Correct 679 ms 49508 KB Output is correct
26 Correct 709 ms 96188 KB Output is correct
27 Correct 716 ms 133204 KB Output is correct
28 Correct 617 ms 196104 KB Output is correct
29 Correct 716 ms 50064 KB Output is correct
30 Correct 787 ms 94332 KB Output is correct
31 Correct 960 ms 129616 KB Output is correct
32 Correct 773 ms 190136 KB Output is correct
33 Correct 671 ms 50192 KB Output is correct
34 Correct 714 ms 95148 KB Output is correct
35 Correct 771 ms 131372 KB Output is correct
36 Correct 644 ms 192324 KB Output is correct
37 Correct 462 ms 53072 KB Output is correct
38 Correct 474 ms 99284 KB Output is correct
39 Correct 552 ms 137744 KB Output is correct
40 Correct 513 ms 200276 KB Output is correct
41 Correct 131 ms 50280 KB Output is correct
42 Correct 245 ms 94424 KB Output is correct
43 Correct 413 ms 129756 KB Output is correct
44 Correct 564 ms 189912 KB Output is correct
45 Correct 209 ms 50912 KB Output is correct
46 Correct 297 ms 95456 KB Output is correct
47 Correct 378 ms 130852 KB Output is correct
48 Correct 459 ms 192236 KB Output is correct