#include <iostream>
#include <fstream>
using namespace std;
ifstream f("arbint.in");
ofstream g("arbint.out");
int n,m,a,b,op,v[100005],aint[200000]; ///profu zice 5 x n, dumitran zicea ceva cu puterile lui 2
void update(int n, int left, int right, int pos, int val)
{   if(left==right)
    {   aint[n]=val;
        return;
    }
    int mid=(left+right)/2;
    if(pos<=mid)
        update(2*n,left,mid,pos,val);
    else
        update(2*n+1,mid+1,right,pos,val);
    if(aint[2*n]>=aint[2*n+1])
        aint[n]=aint[2*n];
    else
        aint[n]=aint[2*n+1];
}
int query(int n, int left, int right, int a, int b)
{   if(a<=left && right<=b)
        return aint[n];
    int mid=(left+right)/2;
    int v1=1<<31;
    int v2=1<<31;
    if(a<=mid)
        v1=query(2*n,left,mid,a,b);
    if(b>mid)
        v2=query(2*n+1,mid+1,right,a,b);
    if(v1>=v2)
        return v1;
    else
        return v2;
}
int main()
{   f>>n>>m;
    for(int i=1;i<=n;i++)
    {   f>>v[i];
        update(1,1,n,i,v[i]);
    }
    for(int i=1;i<=m;i++)
    {   f>>op>>a>>b;
        if(op==0)
            g<<query(1,1,n,a,b)<<'\n';
        if(op==1)
            update(1,1,n,a,b);
    }
    return 0;
}