#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 = 100;
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){
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[1] = 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[p] = 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;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
8536 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
8536 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
502 ms |
71736 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
8536 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
