#include <bits/stdc++.h>

//    #include <boost/multiprecision/cpp_int.hpp>
 #define int long long
 #define inf  1000000007
 #define pa pair<int,int>
 #define ll long long
 #define pal pair<double,double>
 #define ppap pair<pa,int>
  #define PI 3.14159265358979323846
  #define paa pair<int,char>
  #define  mp make_pair
  #define  pb push_back
  #define EPS (1e-10)
                                          
    int dx[8]={0,1,0,-1,1,1,-1,-1};
    int dy[8]={1,0,-1,0,-1,1,1,-1};
                                            using namespace std;
                                   			class pa3{
                                            	public:
                                            	int x;
                                   				int y,z;
                                            	pa3(int x=0,int y=0,int z=0):x(x),y(y),z(z) {}
                                            	bool operator < (const pa3 &p) const{
                                            		if(x!=p.x) return x<p.x;
                                            		if(y!=p.y) return y<p.y;
                                            		 return z<p.z;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                   				bool operator > (const pa3 &p) const{
                                            		if(x!=p.x) return x>p.x;
                                            		if(y!=p.y) return y>p.y;
                                            		 return z>p.z;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa3 &p) const{
                                            		return x==p.x && y==p.y && z==p.z;
                                            	}
                                            		bool operator != (const pa3 &p) const{
                                            			return !( x==p.x && y==p.y && z==p.z);
                                            	}
                                            
                                            };
                                            
                                            class pa4{
                                            	public:
                                            	int x;
                                            	int y,z,w;
                                            	pa4(int x=0,int y=0,int z=0,int w=0):x(x),y(y),z(z),w(w) {}
                                            	bool operator < (const pa4 &p) const{
                                            		if(x!=p.x) return x<p.x;
                                            		if(y!=p.y) return y<p.y;
                                            		if(z!=p.z)return z<p.z;
                                            		return w<p.w;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator > (const pa4 &p) const{
                                            		if(x!=p.x) return x>p.x;
                                            		if(y!=p.y) return y>p.y;
                                            		if(z!=p.z)return z>p.z;
                                            		return w>p.w;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa4 &p) const{
                                            		return x==p.x && y==p.y && z==p.z &&w==p.w;
                                            	}
                                            		
                                            
                                            };
                                            class pa2{
                                            	public:
                                            	int x,y;
                                            	pa2(int x=0,int y=0):x(x),y(y) {}
                                            	pa2 operator + (pa2 p) {return pa2(x+p.x,y+p.y);}
                                            	pa2 operator - (pa2 p) {return pa2(x-p.x,y-p.y);}
                                            	bool operator < (const pa2 &p) const{
                                            		return y != p.y ? y<p.y: x<p.x;
                                            	}
                                            	bool operator > (const pa2 &p) const{
                                            		return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa2 &p) const{
                                            		return abs(x-p.x)==0 && abs(y-p.y)==0;
                                            	}
                                            	bool operator != (const pa2 &p) const{
                                            		return !(abs(x-p.x)==0 && abs(y-p.y)==0);
                                            	}
                                            		
                                            
                                            };
                                            

                      
                                string itos( int i ) {
                                ostringstream s ;
                                s << i ;
                                return s.str() ;
                                }
                                 
                                int gcd(int v,int b){
                                	if(v>b) return gcd(b,v);
                                	if(v==b) return b;
                                	if(b%v==0) return v;
                                	return gcd(v,b%v);
                                }
                 
                            
                                int mod;
int extgcd(int a, int b, int &x, int &y) {
    if (b == 0) {
        x = 1;
        y = 0;
        return a;
    }
    int d = extgcd(b, a%b, y, x);
    y -= a/b * x;
    return d;
}
pa operator+(const pa & l,const pa & r) {   
    return {l.first+r.first,l.second+r.second};                                    
}    
pa operator-(const pa & l,const pa & r) {   
    return {l.first-r.first,l.second-r.second};                                    
}  
                                
                int pr[1200010];
                int inv[1200010];
                
                int beki(int wa,int rr,int warukazu){
                	if(rr==0) return 1%warukazu;
                	if(rr==1) return wa%warukazu;
                	wa%=warukazu;
                	if(rr%2==1) return ((ll)beki(wa,rr-1,warukazu)*(ll)wa)%warukazu;
                	ll zx=beki(wa,rr/2,warukazu);
                	return (zx*zx)%warukazu;
                }

                
    			int comb(int nn,int rr){
    				int r=pr[nn]*inv[rr];
    				r%=mod;
    				r*=inv[nn-rr];
    				r%=mod;
    				return r;
    			}
                
                void gya(int ert){
                	pr[0]=1;
                	for(int i=1;i<=ert;i++){
                		pr[i]=(pr[i-1]*i)%mod;
                	}
                		inv[ert]=beki(pr[ert],mod-2,mod);
                	for(int i=ert-1;i>=0;i--){
                		inv[i]=inv[i+1]*(i+1)%mod;
                	}
                }
                
              //   cin.tie(0);
    		//	ios::sync_with_stdio(false);
    			//priority_queue<pa3,vector<pa3>,greater<pa3>> pq;            
                 //sort(ve.begin(),ve.end(),greater<int>());
//    mt19937(clock_per_sec);
  //  mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()) ;
      
       
       
                               //----------------kokomade tenpure------------



	

typedef	struct node{
	
		node* rc;
		node* lc;
		int sub_size;
		int val; // これが数列の値
		int sum;
	
	}node;

typedef struct RBST{
 	private:
	public:


	
	
	int ran(){
		static unsigned int x=123456789,y=362436069,z=521288629,w=88675123;
		unsigned int t;
		t=(x^(x<<10));
		x=y;
		y=z;
		z=w; 
		return( w=(w^(w>>19))^(t^(t>>8)) );				
	}
	
	void fix(node *v){
		if(v==NULL) return;
		
		v->sub_size=1;
		if(v->lc!=NULL)v->sub_size+=v->lc->sub_size;
		if(v->rc!=NULL)v->sub_size+=v->rc->sub_size;
		
		// ここに子→親の操作を書く
		
		
		return;
	}
	
	int siz(node* v){
		return v==NULL ? 0:v->sub_size;
	}
	
	
	
	
	node* init(const vector<int> &vec,int l,int r){
		if(l>=r) return NULL;
		int c=(l+r)/2;
		node* v=new_node(vec[c]);
		
		v->lc = init(vec,l,c);
		v->rc = init(vec,c+1,r);
		fix(v);
		return v;
	}
	
	node* init(const vector<int> &vec){
		int n=vec.size();
		if(n==0) return NULL;
		
		node* v=init(vec,0,n);
		return v;
	}
	
	node* new_node(int val){
		node* no=new node;
		no->val=val;
		no->sub_size=1;
		no->lc=NULL;
		no->rc=NULL;
		return no;
	}
	
	node* merge(node* l,node* r){
		if(l==NULL) return r;
		if(r==NULL) return l;
		if(ran()%(l->sub_size+r->sub_size) <l->sub_size){
			l->rc=merge(l->rc,r);
			fix(l);
			return l;
		}
		else{
			r->lc=merge(l,r->lc);
			fix(r);
			return r;
		}
	}
	
	pair<node* , node*> split(node* v,int k){
		if(v==NULL) return {NULL,NULL};
		
		//int n=v->sub_size;
		//[0,k),[k,n)に分割
		//0<=k<=n
		
		if(siz(v->lc) >= k){
			pair<node* , node*> t1 = split(v->lc,k);
			v->lc=t1.second;
			fix(v);
			return {t1.first,v};
			
		}
		else{
			pair<node*,node*> t1 = split(v->rc,k-siz(v->lc) -1);
			v->rc=t1.first;
			fix(v);
			return {v,t1.second};
		}
		
		
	}
	
	node* insert(node* v,int pos,int val){//pos 項目にvalを挿入 戻り値は新しいroot
		pair<node* , node*> t1=split(v,pos);
		
		return merge(t1.first,merge(new_node(val),t1.second));
	}
	
	node* erase(node *v,int pos){//pos項目を削除　戻り値は新しいroot
		pair<node* , node*> t1=split(v,pos);
		pair<node* , node*> t2=split(t1.second,1);
		return merge(t1.first,t2.second);
	}
	
	
	node* access(node *v,int k){
		if(siz(v->lc)==k) return v;
		if(siz(v->lc)>=k)return access(v->lc,k);
		else return access(v->rc,k-siz(v->lc)-1);
	}
	
	int lower_bound(node *root, int val){ //番兵が必要！！！！
		if(root==NULL) return 0;
		if(root->val>=val){
		//	cout<<val<<endl;
			return lower_bound(root->lc,val);
		}
		return 1+lower_bound(root->rc,val)+siz(root->lc);
	}
	
	int upper_bound(node *root, int val){ //番兵が必要！！！！
		if(root==NULL) return 0;
		if(root->val>val) return upper_bound(root->lc,val);
		
		return 1+upper_bound(root->rc,val)+siz(root->lc);
	}


	
	
void sequence(node* v){//いまの数列
	
	if(v->lc!=NULL){
		sequence(v->lc);
	}
	cout<<(char)(v->val-1+'a')<<" ";
	
	if(v->rc!=NULL){
		sequence(v->rc);
	}
	
	
}
	
}RBST;


RBST R;

 signed main(){
 	

    	       cin.tie(0);
   			ios::sync_with_stdio(false);
int q,k;
 	cin>>q>>k;
 	
 	node* root=R.new_node(inf*(1000000000ll));
 	
 
 	
 	for(int i=0;i<q;i++){
 	
 		int y;
 		cin>>y;
 		if(y==1){
 			int v;
 			cin>>v;
 			int it=R.lower_bound(root,v);
 	//		cout<<it<<endl;
 			root=R.insert(root,it,v);
 		}
 		else{
 			if(R.siz(root)<=k){
 				cout<<-1<<endl;
 			}
 			else{
 				cout<<R.access(root,k-1)->val<<endl;
 				root=R.erase(root,k-1);
 			}
 		}
 //		cout<<"d"<<endl;
 	}
 	
 	return 0;
  }