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Submission #868780

# Submission time Handle Problem Language Result Execution time Memory
868780 2023-11-02T02:10:42 Z pcc Klasika (COCI20_klasika) C++14
33 / 110
 3377 ms 524288 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 SZ = mxn*160;
int head[mxn],nedge[mxn],dir[mxn];
int arr[mxn],dp[mxn];
pii eul[mxn];
pii trie[SZ];
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(!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(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);
	modify(0,0,C,eul[1].fs,0);
	for(int i = 0;i<q;i++){
		if(!get<0>(req[i])){
			int p = get<1>(req[i]);
			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 6492 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 1 ms 6748 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6748 KB Output is correct
7 Correct 1 ms 6748 KB Output is correct
8 Correct 1 ms 6748 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6748 KB Output is correct
11 Correct 1 ms 6748 KB Output is correct
12 Correct 1 ms 6748 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 1 ms 6748 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6748 KB Output is correct
7 Correct 1 ms 6748 KB Output is correct
8 Correct 1 ms 6748 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6748 KB Output is correct
11 Correct 1 ms 6748 KB Output is correct
12 Correct 1 ms 6748 KB Output is correct
13 Correct 4 ms 7516 KB Output is correct
14 Correct 5 ms 8540 KB Output is correct
15 Correct 5 ms 9560 KB Output is correct
16 Correct 5 ms 10588 KB Output is correct
17 Correct 3 ms 7260 KB Output is correct
18 Correct 4 ms 8284 KB Output is correct
19 Correct 5 ms 9308 KB Output is correct
20 Correct 6 ms 10332 KB Output is correct
21 Correct 3 ms 7260 KB Output is correct
22 Correct 4 ms 8284 KB Output is correct
23 Correct 5 ms 9308 KB Output is correct
24 Correct 5 ms 10384 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 865 ms 133716 KB Output is correct
2 Runtime error 3377 ms 524288 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 1 ms 6748 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6748 KB Output is correct
7 Correct 1 ms 6748 KB Output is correct
8 Correct 1 ms 6748 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6748 KB Output is correct
11 Correct 1 ms 6748 KB Output is correct
12 Correct 1 ms 6748 KB Output is correct
13 Correct 4 ms 7516 KB Output is correct
14 Correct 5 ms 8540 KB Output is correct
15 Correct 5 ms 9560 KB Output is correct
16 Correct 5 ms 10588 KB Output is correct
17 Correct 3 ms 7260 KB Output is correct
18 Correct 4 ms 8284 KB Output is correct
19 Correct 5 ms 9308 KB Output is correct
20 Correct 6 ms 10332 KB Output is correct
21 Correct 3 ms 7260 KB Output is correct
22 Correct 4 ms 8284 KB Output is correct
23 Correct 5 ms 9308 KB Output is correct
24 Correct 5 ms 10384 KB Output is correct
25 Correct 865 ms 133716 KB Output is correct
26 Runtime error 3377 ms 524288 KB Execution killed with signal 9
27 Halted 0 ms 0 KB -