#include <bits/stdc++.h>
using namespace std;
#define all(...) std::begin(__VA_ARGS__), std::end(__VA_ARGS__)
#define rall(...) std::rbegin(__VA_ARGS__), std::rend(__VA_ARGS__)
#define OVERLOAD_REP(_1, _2, _3, _4, name, ...) name
#define REP1(n) for(ll i=0;i<(n);i++)
#define REP2(i, n) for (ll i=0;i<(n);i++)
#define REP3(i, a, n) for (ll i=a;i<(n);i++)
#define REP4(i, a, b, n) for(ll i=a;i<(n);i+=b)
#define rep(...) OVERLOAD_REP(__VA_ARGS__, REP4, REP3, REP2, REP1)(__VA_ARGS__)
#define OVERLOAD_RREP(_1, _2, _3, _4, name, ...) name
#define RREP1(n) for(ll i=(n)-1;i>=0;i--)
#define RREP2(i, n) for(ll i=(n)-1;i>=0;i--)
#define RREP3(i, a, n) for(ll i=(n)-1;i>=(a);i--)
#define RREP4(i, a, b, n) for(ll i=(n)-1;i>=(a);i-=(b))
#define rrep(...) OVERLOAD_RREP(__VA_ARGS__, RREP4, RREP3, RREP2, RREP1)(__VA_ARGS__)
#define uniq(a) sort(all(a));a.erase(unique(all(a)),end(a))
#define len(n) (long long)(n).size()
using ll = int;
using ld = long double;
using ull = unsigned long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;
using vs = vector<string>;
using vvs = vector<vs>;
using vvvs = vector<vvs>;
using vld = vector<ld>;
using vvld = vector<vld>;
using vvvld = vector<vvld>;
using vc = vector<char>;
using vvc = vector<vc>;
using vvvc = vector<vvc>;
using pll = pair<ll,ll>;
using vpll = vector<pll>;
using vvpll = vector<vpll>;

ll intpow(ll a,ll b){
    ll ans = 1;
    while (b){
        if (b & 1){
            ans *= a;
        }
        a *= a;
        b /= 2;
    }
    return ans;
}
ll modpow(ll a,ll b,ll c){
    ll ans = 1;
    while (b){
        if (b & 1){
            ans *= a;
            ans %= c;
        }
        a *= a;
        a %= c;
        b /= 2;
    }
    return ans;
}

template <typename T>
inline T floor(T a, T b) {
    T q = a / b;
    T r = a % b;
    if (r != 0 && ((r < 0) != (b < 0))) q--;
    return q;
}

template <typename T>
inline T ceil(T a, T b) {
    T q = a / b;
    T r = a % b;
    if (r != 0 && ((r < 0) == (b < 0))) q++;
    return q;
}

template <typename T>
inline T bmod(T a, T b) {
    T r = a % b;
    if (r < 0) r += std::abs(b);
    return r;
}

template <class K, class V>
vector<vector<pair<K,V>>> group_by_first(vector<pair<K,V>> vec) {
    sort(vec.begin(), vec.end(), [](auto& a, auto& b) {
        if (a.first != b.first) return a.first < b.first;
        return a.second < b.second;
    });

    vector<vector<pair<K,V>>> res;
    for (auto& p : vec) {
        if (res.empty() || res.back().back().first != p.first) {
            res.push_back({});
        }
        res.back().push_back(p);
    }
    return res;
}

template<class... T>
void input(T&... a){
    (cin >> ... >> a);
}

#define INT(...) int __VA_ARGS__; input(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__; input(__VA_ARGS__)
#define ULL(...) ull __VA_ARGS__; input(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__; input(__VA_ARGS__)
#define STR(...) string __VA_ARGS__; input(__VA_ARGS__)
#define CHA(...) char __VA_ARGS__; input(__VA_ARGS__)
#define VLL(name,length) vll name(length);rep(i,length){cin >> name[i];}
#define VVLL(name,h,w) vvll name(h,vll(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVLL(name,a,b,c) vvvll name(a,vvll(b,vll(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define VI(name,length) vi name(length);rep(i,length){cin >> name[i];}
#define VVI(name,h,w) vvi name(h,vi(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVI(name,a,b,c) vvvi name(a,vvll(b,vi(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define VLD(name,length) vld name(length);rep(i,length){cin >> name[i];}
#define VVLD(name,h,w) vvld name(h,vld(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVLD(name,a,b,c) vvvld name(a,vvld(b,vld(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define VC(name,length) vc name(length);rep(i,length){cin >> name[i];}
#define VVC(name,h,w) vvc name(h,vc(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVC(name,a,b,c) vvvc name(a,vvc(b,vc(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define VS(name,length) vs name(length);rep(i,length){cin >> name[i];}
#define VVS(name,h,w) vvs name(h,vs(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVS(name,a,b,c) vvvs name(a,vvs(b,vs(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define PLL(name) pll name;cin>>name.first>>name.second;
#define VPLL(name,length) vpll name(length);rep(i,length){cin>>name[i].first>>name[i].second;}

void print(){cout << "\n";}

template <typename T1, typename T2>
std::ostream& operator<<(std::ostream& os, const std::pair<T1, T2>& p) {
    os << "(" << p.first << ", " << p.second << ")";
    return os;
}

template <typename T>
std::ostream& operator<<(std::ostream& os, const std::vector<T>& vec) {
    os << "[";
    for (size_t i = 0; i < vec.size(); ++i) {
        os << vec[i];
        if (i + 1 < vec.size()) os << ", ";
    }
    os << "]";
    return os;
}

template <typename T1, typename T2>
std::ostream& operator<<(std::ostream& os, const std::vector<std::pair<T1, T2>>& a) {
    os << "[";
    for (size_t j = 0; j < a.size(); ++j) {
        os << "(" << a[j].first << ", " << a[j].second << ")";
		if (j + 1 < a.size()) os << ", ";
    }
	os << "]";
    return os;
}

template <typename T1, typename T2>
std::ostream& operator<<(std::ostream& os, const std::vector<std::vector<std::pair<T1, T2>>>& mat) {
	os << "[";
    for (size_t i = 0; i < mat.size(); ++i) {
		os << "[";
        for (size_t j = 0; j < mat[i].size(); ++j) {
            os << "(" << mat[i][j].first << ", " << mat[i][j].second << ")";
			if (j + 1 < mat[i].size()) os << ", ";
        }
		os << "]";
		if (i + 1 < mat.size()) os << ", ";
    }
	os << "]";
    return os;
}

template <typename T>
std::ostream& operator<<(std::ostream& os, const std::multiset<T>& s) {
    os << "{";
    bool first = true;
    for (const auto& x : s) {
        if (!first) os << ", ";
        os << x;
        first = false;
    }
    os << "}";
    return os;
}

template <typename K, typename V>
std::ostream& operator<<(std::ostream& os, const std::map<K, V>& m) {
    os << "{";
    bool first = true;
    for (const auto& [key, val] : m) {
        if (!first) os << ", ";
        os << key << ": " << val;
        first = false;
    }
    os << "}";
    return os;
}

template<class T, class... Ts>
void print(const T& a, const Ts&... b){cout << a;(cout << ... << (cout << ' ', b));cout << '\n';}

#ifdef LOCAL
void debug() { std::cerr << "\n"; }

template<class T, class... Ts>
void debug(const T& a, const Ts&... b) {
    std::cerr << a;
    (std::cerr << ... << (std::cerr << ' ', b));
    std::cerr << '\n';
}

void debug_space() {}

template<class T, class... Ts>
void debug_space(const T& a, const Ts&... b) {
    std::cerr << a;
    (std::cerr << ... << (std::cerr << ' ', b));
}
#else
#define debug(...) (void)0
#endif



template <typename T>
T sum(const std::vector<T>& v) {
    return std::accumulate(v.begin(), v.end(), T(0));
}

template<class Set>
auto le(const Set &s, const typename Set::value_type &x,
        const typename Set::value_type &ngval = typename Set::value_type(-1)) {
    auto it = s.upper_bound(x);
    if (it == s.begin()) return ngval;
    return *prev(it);
}

template<class Set>
auto lt(const Set &s, const typename Set::value_type &x,
        const typename Set::value_type &ngval = typename Set::value_type(-1)) {
    auto it = s.lower_bound(x);
    if (it == s.begin()) return ngval;
    return *prev(it);
}

template<class Set>
auto ge(const Set &s, const typename Set::value_type &x,
        const typename Set::value_type &ngval = typename Set::value_type(-1)) {
    auto it = s.lower_bound(x);
    if (it == s.end()) return ngval;
    return *it;
}

template<class Set>
auto gt(const Set &s, const typename Set::value_type &x,
        const typename Set::value_type &ngval = typename Set::value_type(-1)) {
    auto it = s.upper_bound(x);
    if (it == s.end()) return ngval;
    return *it;
}

template<class T> bool chmin(T& a, const T& b){ if(a > b){ a = b; return 1; } return 0; }
template<class T> bool chmax(T& a, const T& b){ if(a < b){ a = b; return 1; } return 0; }
template<class T, class U> bool chmin(T& a, const U& b){ if(a > T(b)){ a = b; return 1; } return 0; }
template<class T, class U> bool chmax(T& a, const U& b){ if(a < T(b)){ a = b; return 1; } return 0; }


using U = uint64_t;
const U B = 64;
struct FS {
   U n;
   vector<vector<U>> a;
   vector<int> cnt;
   FS(U n) : n(n),cnt(n,0) {
      do a.emplace_back(n = (n + B - 1) / B);
      while(n > 1);
   }
   bool operator[](ll i) const { return a[0][i / B] >> (i % B) & 1; }
   void set(ll i) {
      cnt[i]++;
      if(cnt[i] != 1){return;}
      for(auto& v : a) {
         v[i / B] |= 1ULL << (i % B);
         i /= B;
      }
   }
   void erase(ll i) {
      cnt[i]--;
      if(cnt[i] != 0){return;}
      for(auto& v : a) {
         v[i / B] &= ~(1ULL << (i % B));
         if(v[i / B]) break;
         i /= B;
      }
   }
   ll next(ll i) {
      rep(h, len(a)) {
         i++;
         if(i / B >= a[h].size()) break;
         U d = a[h][i / B] >> (i % B);
         if(d) {
            i += countr_zero(d);
            while(h--) i = i * B + countr_zero(a[h][i]);
            return i;
         }
         i /= B;
      }
      return n;
   }
   ll prev(ll i) {
      rep(h, len(a)) {
         i--;
         if(i < 0) break;
         U d = a[h][i / B] << (~i % B);
         if(d) {
            i -= countl_zero(d);
            while(h--) i = i * B + __lg(a[h][i]);
            return i;
         }
         i /= B;
      }
      return -1;
   }
};
using pii = pair<int,int>;
struct Mo {
   int n;
   vector<pii> lr;
   Mo(int n) : n(n) {}
   void add(int l, int r) { lr.emplace_back(l, r); }
   template<typename AL, typename AR, typename EL, typename ER, typename O>
   void build(const AL& add_left, const AR& add_right, const EL& erase_left, const ER& erase_right, const O& out) {
      int q = (int)lr.size();
      int bs = n / min<int>(n, sqrt(q));
      vector<int> ord(q);
      iota(all(ord), 0);
      sort(all(ord), [&](int a, int b) {
         int ab = lr[a].first / bs, bb = lr[b].first / bs;
         if(ab != bb) return ab < bb;
         return (ab & 1) ? lr[a].second > lr[b].second : lr[a].second < lr[b].second;
      });
      int l = 0, r = 0;
      for(auto idx : ord) {
         while(l > lr[idx].first) add_left(--l);
         while(r < lr[idx].second) add_right(r++);
         while(l < lr[idx].first) erase_left(l++);
         while(r > lr[idx].second) erase_right(--r);
         out(idx);
      }
   }
   template<typename A, typename E, typename O> void build(const A& add, const E& erase, const O& out) {
      build(add, add, erase, erase, out);
   }
};

int main(){
	ios::sync_with_stdio(false);
	std::cin.tie(nullptr);

    LL(n,q);
    VLL(a,n);
    Mo mo(100000);
    vll tl(q),il(q),xl(q);
    ll cnt = 0;
    rep(i,q){
        LL(t);
        if(t == 1){
            LL(idx,x);
            tl[i] = t;
            il[i] = idx-1;
            xl[i] = x;
        }
        else{
            LL(r);
            tl[i] = t;
            il[i] = r;
            mo.add(i,r);
            cnt++;
        }
    }
    multiset<ll> s,t;
    auto add = [&](ll x){
        debug("Add");
        /*
        for(auto z:s){
            cerr << z << ' ';
        }
        cerr << endl;
        for(auto z:t){
            cerr << z << ' ';
        }
        cerr << endl;
        cerr << x << endl;
        */
        s.emplace(x);
        auto it = s.find(x);
        if(it != s.begin()){
            t.emplace((*it) ^ (*(prev(it))));
        }
        if(next(it) != s.end()){
            t.emplace((*it) ^ (*(next(it))));
        }
        if(it != s.begin() && next(it) != s.end()){
            t.erase(t.find((*(prev(it))) ^ (*(next(it)))));
        }
        /*
        for(auto z:s){
            cerr << z << ' ';
        }
        cerr << endl;
        for(auto z:t){
            cerr << z << ' ';
        }
        cerr << endl;
        cerr << x << endl;
        */
    };
    auto del = [&](ll x){
        debug("Del");
        /*
        for(auto z:s){
            cerr << z << ' ';
        }
        cerr << endl;
        for(auto z:t){
            cerr << z << ' ';
        }
        cerr << endl;
        cerr << x << endl;
        */
        auto it = s.find(x);
        if(it != s.begin()){
            t.erase(t.find((*it) ^ (*(prev(it)))));
        }
        if(next(it) != s.end()){
            t.erase(t.find((*it) ^ (*(next(it)))));
        }
        if(it != s.begin() && next(it) != s.end()){
            t.emplace((*(prev(it))) ^ (*(next(it))));
        }
        s.erase(s.find(x));
        debug("Del");
        /*
        for(auto z:s){
            cerr << z << ' ';
        }
        cerr << endl;
        for(auto z:t){
            cerr << z << ' ';
        }
        cerr << endl;
        cerr << x << endl;
        */
    };
    vvll b(n);
    rep(i,n){
        b[i].push_back(a[i]);
    }
    ll right = 0;
    auto add_left = [&](ll i){
        debug("add_left",i);
        debug(a);
        if(tl[i] == 2){return;}
        ll idx = il[i];
        ll x = xl[i];
        if(idx < right)del(a[idx]);
        b[idx].pop_back();
        a[idx] = b[idx].back();
        if(idx < right)add(a[idx]);
    };
    auto del_left = [&](ll i){
        debug("del_left",i);
        debug(a);
        if(tl[i] == 2){return;}
        ll idx = il[i];
        ll x = xl[i];
        if(idx < right)del(a[idx]);
        a[idx] = x;
        b[idx].push_back(x);
        if(idx < right)add(a[idx]);
    };
    auto add_right = [&](ll i){
        debug("add_right",i);
        right++;
        add(a[i]);
    };
    auto del_right = [&](ll i){
        debug("del_right",i);
        right--;
        del(a[i]);
    };
    vll ans(q,0);
    auto out = [&](ll i){
        
        ans[i] = *(t.begin());
        debug("out",i,ans[i]);
        debug("Out");
        /*
        for(auto z:s){
            cerr << z << ' ';
        }
        cerr << endl;
        for(auto z:t){
            cerr << z << ' ';
        }
        */
    };
    debug(1);
    mo.build(add_left,add_right,del_left,del_right,out);
    ans.resize(cnt);
    rep(i,cnt){
        print(ans[i]);
    }


}