#include <bits/stdc++.h> 
using namespace std;
ifstream fin ("arbint.in");
ofstream fout ("arbint.out");

int n,m,x,z[100005],i,j,mx,a,b;

int maxi(int i, int j)
{ int a, b, m;
if (i==j)
return z[i];
else
{ m = (i+j)/2;
a = max(i, m);
b = max(m+1, j);
if (a>b)
return a;
else
return b;
}
}

int main()
{
	fin>>n>>m;
	for(i=1;i<=n;i++)fin>>z[i];
	for(j=1;j<=m;j++)
	{
		fin>>x>>a>>b;
		if(x==0){
			for(i=a;i<=b;i++)if(z[i]==maxi(a,b))fout<<i<<endl;
		}else z[a]=b;
	}
	return 0;
}