#include <iostream>
#include <cstdio>
#include <cmath>
const int maxn=100000+2;
int a[maxn],b[maxn];
int m,n,h,c;
int x,y,z;
using namespace std;
int main()
{
	//freopen("test.in","r",stdin);
	//freopen("test.out","w",stdout);
	freopen("zwei.in","r",stdin);
	freopen("zwei.out","w",stdout);
	
	cin>>m>>n;
	for(int i=1;i<=m;i++)
	{
		cin>>a[i];
	}
	for(int i=1;i<=n;i++)
	{
		cin>>x>>y>>z;
		if(x==0) a[y]=z;
		if(x==1)
		{
			for(int j=y;j<=z;j++)
			{
				h=h^a[j];
			}
			cout<<h<<endl;
			h=0;
		}
	}
	return 0;
}