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

const int maxn=100000+1;
int a[maxn];
int n,m;
int x,y;
int s,sum;
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>>s>>x>>y;
		if (s==0)
		{
			a[x]=y;
		}
		else 
		{
			sum=a[x];
			for (int j=x+1; j<=y; j++)
			{
				sum=sum^a[j];
			}
			cout<<sum<<endl;
		}
	}
	return 0;
}