#include<bits/stdc++.h>
using namespace std;
#pragma GCC optimize(2)
#pragma GCC optimize(3)
#pragma GCC optimize("Ofast,unroll-loops")
namespace Fread{const int SIZE=1<<16;char buf[SIZE],*S,*T;inline char getchar(){if(S==T){T=(S=buf)+fread(buf,1,SIZE,stdin);if(S==T)return'\n';}return *S++;}}namespace Fwrite{const int SIZE=1<<16;char buf[SIZE],*S=buf,*T=buf+SIZE;inline void flush(){fwrite(buf,1,S-buf,stdout);S=buf;}inline void putchar(char c){*S++=c;if(S==T)flush();}struct NTR{~NTR(){flush();}}ztr;}
#define getchar Fread::getchar
#define putchar Fwrite::putchar
int print_precision=10;bool print_T_endl=1;char print_between=' ';
template<typename T>struct is_char{static constexpr bool value=(std::is_same<T,char>::value||std::is_same<T,signed char>::value||std::is_same<T,unsigned char>::value);};template<typename T>struct is_integral_ex{static constexpr bool value=(std::is_integral<T>::value||std::is_same<T,__int128>::value)&&!is_char<T>::value;};template<typename T>struct is_floating_point_ex{static constexpr bool value=std::is_floating_point<T>::value||std::is_same<T,__float128>::value;};namespace Fastio{struct Reader;struct Writer;template<size_t id>struct read_tuple{template<typename...T>static void read(Reader&stream,std::tuple<T...>&x){read_tuple<id-1>::read(stream,x);stream>>get<id-1>(x);}};template<>struct read_tuple<0>{template<typename...T>static void read([[maybe_unused]]Reader&stream,[[maybe_unused]]std::tuple<T...>&x){}};template<size_t id>struct print_tuple{template<typename...T>static void print(Writer&stream,const std::tuple<T...>&x){print_tuple<id-1>::print(stream,x);putchar(print_between);stream<<get<id-1>(x);}};template<>struct print_tuple<1>{template<typename...T>static void print(Writer&stream,const std::tuple<T...>&x){stream<<get<0>(x);}};template<>struct print_tuple<0>{template<typename...T>static void print([[maybe_unused]]Writer&stream,[[maybe_unused]]const std::tuple<T...>&x){}};
struct Reader{template<typename T>typename std::enable_if_t<std::is_class<T>::value,Reader&>operator>>(T&x){for(auto &y:x)*this>>y;return *this;}template<typename...T>Reader&operator>>(std::tuple<T...>&x){read_tuple<sizeof...(T)>::read(*this,x);return *this;}template<typename T>typename std::enable_if_t<is_integral_ex<T>::value,Reader&>operator>>(T&x){char c=getchar();short f=1;while(c<'0'||c>'9'){if(c=='-')f*=-1;c=getchar();}x=0;while(c>='0'&&c<='9'){x=(x<<1)+(x<<3)+(c^48);c=getchar();}x*=f;return *this;}template<typename T>typename std::enable_if_t<is_floating_point_ex<T>::value,Reader&>operator>>(T&x){char c=getchar();short f=1,s=0;x=0;T t=0;while((c<'0'||c>'9')&&c!='.'){if(c=='-')f*=-1;c=getchar();}while(c>='0'&&c<='9'&&c!='.')x=x*10+(c^48),c=getchar();if(c=='.')c=getchar();else return x*=f,*this;while(c>='0'&&c<='9')t=t*10+(c^48),s++,c=getchar();while(s--)t/=10.0;x=(x+t)*f;return*this;}template<typename T>typename std::enable_if_t<is_char<T>::value,Reader&>operator>>(T&c){c=getchar();while(c=='\n'||c==' '||c=='\r')c=getchar();return *this;}Reader&operator>>(char*str){int len=0;char c=getchar();while(c=='\n'||c==' '||c=='\r')c=getchar();while(c!='\n'&&c!=' '&&c!='\r')str[len++]=c,c=getchar();str[len]='\0';return*this;}template<typename T1,typename T2>Reader&operator>>(std::pair<T1,T2>&x){*this>>x.first>>x.second;return *this;}Reader&operator>>(std::string&str){str.clear();char c=getchar();while(c=='\n'||c==' '||c=='\r')c=getchar();while(c!='\n'&&c!=' '&&c!='\r')str.push_back(c),c=getchar();return*this;}Reader(){}}cin;const char endl='\n';
struct Writer{typedef __int128 mxdouble;template<typename T>typename std::enable_if_t<std::is_class<T>::value,Writer&>operator<<(const T&x){for(auto q:x){*this<<q;if(!is_class<decltype(q)>::value)*this<<print_between;}if(!is_class<typename T::value_type>::value&&print_T_endl)*this<<'\n';return *this;}template<typename...T>Writer&operator<<(const std::tuple<T...>&x){print_tuple<sizeof...(T)>::print(*this,x);if(print_T_endl)*this<<'\n';return *this;}template<typename T>typename std::enable_if_t<is_integral_ex<T>::value,Writer&>operator<<(T x){if(x==0)return putchar('0'),*this;if(x<0)putchar('-'),x=-x;static int sta[45];int top=0;while(x)sta[++top]=x%10,x/=10;while(top)putchar(sta[top]+'0'),--top;return*this;}template<typename T>typename std::enable_if_t<is_floating_point_ex<T>::value,Writer&>operator<<(T x){if(x<0)putchar('-'),x=-x;x+=pow(10,-print_precision)/2;mxdouble _=x;x-=(T)_;static int sta[45];int top=0;while(_)sta[++top]=_%10,_/=10;if(!top)putchar('0');while(top)putchar(sta[top]+'0'),--top;putchar('.');for(int i=0;i<print_precision;i++)x*=10;_=x;while(_)sta[++top]=_%10,_/=10;for(int i=0;i<print_precision-top;i++)putchar('0');while(top)putchar(sta[top]+'0'),--top;return*this;}template<typename T>typename std::enable_if_t<is_char<T>::value,Writer&>operator<<(const T&c){putchar(c);return*this;}Writer&operator<<(char*str){int cur=0;while(str[cur])putchar(str[cur++]);return *this;}Writer&operator<<(const char*str){int cur=0;while(str[cur])putchar(str[cur++]);return*this;}template<typename T1,typename T2>Writer&operator<<(const std::pair<T1,T2>&x){*this<<x.first<<print_between<<x.second;if(print_T_endl)*this<<'\n';return *this;}Writer&operator<<(const std::string&str){int st=0,ed=str.size();while(st<ed)putchar(str[st++]);return*this;}Writer(){}}cout;}
#define cin Fastio::cin
#define cout Fastio::cout
#define endl Fastio::endl
#define il inline
#define fi first
#define se second
#define mk make_pair
#define eb emplace_back
#define rep(i,l,r) for(int i=(l); i<=(r); ++i)
#define rep_(i,l,r) for(int i=(l); i>=(r); --i)
typedef long long lr;
typedef double db;
typedef pair<int,int> pii;
typedef vector<int> vi;
constexpr int mod1=998244353,mod2=1e9+7;
constexpr db pi=3.141592653589793,eps=1e-9;
constexpr int inf32=0x3f3f3f3f,Inf32=0xc0c0c0c0;
constexpr lr inf64=0x3f3f3f3f3f3f3f3f,Inf64=0xc0c0c0c0c0c0c0c0;
template<typename T>il T Max(T x,T y) { return (x>y)? x:y; }
template<typename T>il T Min(T x,T y) { return (x<y)? x:y; }
template<typename T>il T gcd(T x,T y) { return (!y)? x:gcd(y,x%y); }
template<typename T>il T Abs(T x) { return (x>0)? x:(-x); }
template<typename T>il T Rnd(T l,T r,mt19937_64 &eng)
{
	uniform_int_distribution<T> uid(l,r);
	return uid(eng);
}
mt19937_64 eng(chrono::high_resolution_clock::now().time_since_epoch().count());
constexpr int N=1000100;
struct node { int mn,pos; };
node tr[N<<2];
int tag[N<<2];
il node operator +(const node &X,const node &Y) { return (X.mn<Y.mn)? X:Y; }
int n,m,a[N];
il void Build(int k,int l,int r)
{
	if(l==r)
	{
		tr[k].pos=r;
		return;
	}
	int mid=(l+r)>>1;
	Build(k<<1,l,mid),Build(k<<1|1,mid+1,r),tr[k].pos=r;
}
il void Pushdown(int k)
{
	if(!tag[k])
		return;
	tr[k<<1].mn+=tag[k],tag[k<<1]+=tag[k];
	tr[k<<1|1].mn+=tag[k],tag[k<<1|1]+=tag[k];
	tag[k]=0;
}
il void Modify(int k,int l,int r,int x,int y,int v)
{
	if(l>y||r<x)
		return;
	if(l>=x&&r<=y)
	{
		tr[k].mn+=v,tag[k]+=v;
		return;
	}
	Pushdown(k);
	int mid=(l+r)>>1;
	Modify(k<<1,l,mid,x,y,v),Modify(k<<1|1,mid+1,r,x,y,v),tr[k]=tr[k<<1]+tr[k<<1|1];
}
node ans;
il void Query(int k,int l,int r,int x,int y)
{
	if(l>=x&&r<=y)
	{
		ans=ans+tr[k];
		return;
	}
	Pushdown(k);
	int mid=(l+r)>>1;
	if(y<=mid)
		Query(k<<1,l,mid,x,y);
	else
		Query(k<<1,l,mid,x,y),Query(k<<1|1,mid+1,r,mid+1,y);
}
il void Solve()
{
	cin>>n>>m;
	Build(1,1,n);
	rep(i,1,n)
	{
		cin>>a[i];
		if(a[i]<i)
			Modify(1,1,n,a[i]+1,i,1);
	}
	while(m--)
	{
		int op,x,y;
		cin>>op;
		if(op==1)
		{
			cin>>x>>y;
			if(a[x]<x)
				Modify(1,1,n,a[x]+1,x,-1);
			a[x]=y;
			if(a[x]<x)
				Modify(1,1,n,a[x]+1,x,1);
		}
		if(op==2)
		{
			cin>>x;
			ans.mn=inf32,ans.pos=0,Query(1,1,n,1,x);
			cout<<ans.pos<<'\n';
		}
	}
}
int main()
{
	string fpre="anoko",isuf="in",osuf="out";
	freopen((fpre+"."+isuf).c_str(),"r",stdin);
	freopen((fpre+"."+osuf).c_str(),"w",stdout);
	int T=1;
	while(T--)
		Solve();
	return 0;
}