#include <bits/stdc++.h>
using namespace std;
using std::cout;
using std::cin;
using std::endl;
using ll=long long;
using ld=long double;
const ll ILL=2167167167167167167;
const int INF=100000000;
const int mod=998244353;
#define rep(i,a,b) for (int i=(int)(a);i<(int)(b);i++)
#define all(p) p.begin(),p.end()
template<class T> using _pq = priority_queue<T, vector<T>, greater<T>>;
template<class T> ll LB(vector<T> &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> ll UB(vector<T> &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> bool chmin(T &a,T b){if(a>b){a=b;return 1;}else return 0;}
template<class T> bool chmax(T &a,T b){if(a<b){a=b;return 1;}else return 0;}
template<class T> void So(vector<T> &v) {sort(v.begin(),v.end());}
template<class T> void Sore(vector<T> &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});}
bool yneos(bool a,bool upp=0){if(a){cout<<(upp?"YES\n":"Yes\n");}else{cout<<(upp?"NO\n":"No\n");}return a;}
template<class T> void vec_out(vector<T> &p,int ty=0){
if(ty==2){cout<<'{';for(int i=0;i<(int)p.size();i++){if(i){cout<<",";}cout<<'"'<<p[i]<<'"';}cout<<"}\n";}
else{if(ty==1){cout<<p.size()<<"\n";}for(int i=0;i<(int)(p.size());i++){if(i) cout<<" ";cout<<p[i];}cout<<"\n";}}
template<class T> T vec_min(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmin(ans,x);return ans;}
template<class T> T vec_max(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmax(ans,x);return ans;}
template<class T> T vec_sum(vector<T> &a){T ans=T(0);for(auto &x:a) ans+=x;return ans;}
int pop_count(long long a){int res=0;while(a){res+=(a&1),a>>=1;}return res;}
template<class T> bool inside(T l,T x,T r){return l<=x&&x<r;}

#include <atcoder/segtree>

int op(int a, int b){
    return a + b;
}

int e(){
    return 0;
}

int target;

bool f(int x){
    return x < target;
}

void solve();
// CYAN / FREDERIC
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    
    int t = 1;
    // cin >> t;
    rep(i, 0, t) solve();
}

void solve(){
    int N, Q;
    cin >> N >> Q;
    vector<ll> t(N + Q), k(N + Q), x(N + Q);
    rep(i, 0, N + Q){
        if (i < N){
            t[i] = 1;
            k[i] = i;
            cin >> x[i];
            continue;
        }
        cin >> t[i];
        if (t[i] == 1){
            cin >> k[i] >> x[i];
            k[i]--;
        }
        if (t[i] == 3){
            cin >> k[i];
            k[i]--;
        }
    }
    vector<int> order(N + Q), inv(N + Q);
    rep(i, 0, N + Q) order[i] = i;
    std::sort(all(order), [&](int l, int r){
        return x[l] < x[r];
    });
    
    auto B = x;
    So(B);
    rep(i, 0, N + Q) inv[order[i]] = i;
    atcoder::segtree<int, op, e> seg(N + Q);
    set<int> del;
    set<int> add;
    set<int> ind;
    vector<int> A(N, -1);
    rep(i, 0, N + Q){
        if (t[i] == 1){
            del.insert(A[k[i]]);
            add.erase(A[k[i]]);
            A[k[i]] = inv[i];
            add.insert(A[k[i]]);
            ind.insert(k[i]);
        }
        if (t[i] == 2){
            del.erase(-1);
            for (auto y : del) seg.set(y, e());
            for (auto y : add) if (0 <= y && y < N + Q) seg.set(y, 1);
            for (auto y : ind) if (0 <= y && y < N) A[y] = -1;
            ind.clear();
            del.clear();
            add.clear();
        }
        if (t[i] == 3){
            if (A[k[i]] != -1){
                cout << B[A[k[i]]] << "\n";
            }
            else{
                target = k[i] + 1;
                if (seg.all_prod() != N) break;
                cout << B[seg.max_right<f>(0)] << "\n";
            }
        }
    }
}