#include<bits/stdc++.h>
using namespace std;
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
// #pragma GCC optimize("-O3")
// #pragma GCC optimize("no-stack-protector")
// #pragma GCC optimize("fast-math")
// #pragma GCC optimize("Ofast")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
// #pragma GCC target("avx,avx2,fma")
// #pragma GCC optimization ("unroll-loops")
//#define LOCAL
#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename \
enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifndef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
*this << "[";
for (auto it = d.b; it != d.e; ++it)
*this << ", " + 2 * (it == d.b) << *it;
ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
#define f first
#define vec vector
#define s second
#define p_b push_back
#define pb push_back
////////////////////////////////???????????????CHECK THIS OUT???????????????//////////////////////////////
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<long long,long long> pll;
typedef pair<int,int> pii;
typedef pair<long long,int> pli;
////////////////////////////////???????????????CHECK THIS OUT???????????????//////////////////////////////
#define m_p make_pair
#define fast_io cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(0);
#define all(x) x.begin(),x.end()
#define pw(x) (1ll << x)
#define sz(x) (int)x.size()
#define endl "\n"
#define rall(x) x.rbegin(),x.rend()
using namespace __gnu_pbds;
ld eps = (ld)1 / 1e6;
const ld pi=3.14159265359;
int inf = 1e9,mod1=1e9+7;
ll sqr(ll a) { return a * a; }
ll qb(ll a) { return a * a * a; }
template<typename T> bool umax(T& a, T b) {return a<b?a=b,1:0;}
template<typename T> bool umin(T& a, T b) {return b<a?a=b,1:0;}
bool is_prime(ll val){for(ll i=2;i<=sqrt(val);i++)if(val%i==0)return 0; return 1;}
ll gcd(ll a, ll b) { return !a ? b : gcd(b % a, a); }
ll binpow(ll a, ll b, ll mod) { return b ? (b % 2 ? (a * (sqr(binpow(a, b / 2, mod)) % mod)) % mod : sqr(binpow(a, b / 2, mod)) % mod) : 1; }ll binmult(ll a, ll b, ll mod) { return b ? (b % 2 ? (2 * binmult(a, b / 2, mod) + a) % mod : (2 * binmult(a, b / 2, mod)) % mod) : 0; }
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
const ll RR=1e4;
const ll tx[8]={1,-1,2,-2,-1,-2};
const ll ty[8]={-2,-2,-1,-1,2,1};
const char rev_to[4]={'E','W','N','S'};
///////////////////fdsfsdfgdsjgdjfsgdsfsdkafsdaokfsdpofdckokfpgjvdsujbgdfpiodjOFCjs;igsd;cpjzckpdoskvgdok;a///////
const int ppp=73;
const int M=1e9+7;
///////////////////fdsfsdfgdsjgdjfsgdsfsdkafsdaokfsdpofdckokfpgjvdsujbgdfpiodjOFCjs;igsd;cpjzckpdoskvgdok;a///////
//const int ppp=73;
const int block=600;
const int OPEN=1;
const int CLOSE=0;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> o_st;
auto rnd=bind(uniform_int_distribution<int>(1,5969699),mt19937(time(0)));
void bad(){
cout<<"-1";
exit(0);
}
const int N=2e5+4;
const int lg=30;
int in[N],out[N];
int xr[N];
vec<int>g[N];
int ti;
int n=1;
map<int,int>mp;
map<int,int>obr;
void dfs1(int v,int p){
in[v]=++ti;
xr[v]=xr[p]^obr[v];
if(v==p)
xr[v]=0;
for(auto &z : g[v]){
if(z^p)
dfs1(z,v);
}
out[v]=ti;
}
struct query{
int tp,x,y;
query(string s,int _x,int _y){
tp=(s=="Add"?1:2);
x=_x;y=_y;
}
};
struct node{
node *a[2];
int cl;
o_st st;
node(){
a[0]=a[1]=nullptr;
cl=0;
}
};
node *root=new node();
void add(int x,int id){
node *cur=root;
for(int i=lg-1;i>=0;i--){
int bt=(x>>i)&1;
if(!cur->a[bt]){
cur->a[bt]=new node();
}
cur=cur->a[bt];
cur->st.insert(id);
}
}
int GET(int x,int l,int r){
int sub=0;
node *cur=root;
for(int i=lg-1;i>=0;i--){
int bt=(x>>i)&1;
if(cur->a[bt^1]){
int cl=cur->a[bt^1]->st.order_of_key(r+1)-cur->a[bt^1]->st.order_of_key(l);
if(cl){
cur=cur->a[bt^1];
sub+=(1<<i);
continue;
}
}
cur=cur->a[bt];
}
return sub;
}
signed main()
{
fast_io;
int t;
cin>>t;
vec<query>q;
mp[1]=1;
obr[1]=1;
for(int i=0;i<t;i++){
int x,y;
string s;
cin>>s>>x>>y;
query lel=query(s,x,y);
q.pb(lel);
if(q[i].tp==1){
int a=x,b=++n;
mp[y]=n;
obr[n]=y;
g[a].pb(b);
q[i].x=a,q[i].y=b;
// debug()<<imie(a)imie(b);
}
else{
int a=x,b=y;
q[i].x=a,q[i].y=b;
}
}
dfs1(1,1);
add(0,1);
// return 0;
for(int i=0;i<t;i++){
if(q[i].tp==1){
int id=q[i].y;
add(xr[id],in[id]);
// debug()<<imie(id)imie(xr[id]);
}
else{
int x=xr[q[i].x];
int l=in[q[i].y],r=out[q[i].y];
// debug()<<imie(l)imie(r);
cout<<GET(x,l,r)<<endl;
}
// debug()<<imie("YE");
}
return 0;
}
/*
*/
