#include <iostream>
#include <cstdio>
#include <cmath>
#include <algorithm>
#include <cstring>
using namespace std;

const int maxn=100000+10;
int a[maxn];
int n,m;
long long e,x,y,s;
int main()
{
	freopen("zwei.in","r",stdin);
	freopen("zwei.out","w",stdout);
	cin>>n>>m;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
	}
	for(int i=1;i<=m;i++)
	{
		cin>>e>>x>>y;
		if(e==0)
			a[x]=y;
		else if(e==1)
		{
			s=a[x];
			for(int j=x+1;j<=y;j++)
				s^=a[j];
			cout<<s<<endl;
		}
	}
	return 0;
}