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

const int maxn=100000+1;
int n,m,a[maxn];
int id,x,y;
int s[maxn];
int main()
{
	freopen("zwei.in","r",stdin);
	freopen("zwei.out","w",stdout);
	
	scanf("%d%d",&n,&m);
	for (int i=1; i<=n; i++)
		scanf("%d",&a[i]);
	for (int i=0; i<m; i++)
	{
		scanf("%d%d%d",&id,&x,&y);
		if (id==0)
			a[x]=y;
		else
		{
			int sum=a[x];
			for (int j=x+1; j<=y; j++)
			{
				sum=sum^a[j];
			}
			printf("%d\n",sum);
		}
	}

	/*
	scanf("%d%d",&n,&m);
	for (int i=1; i<=n; i++)
	{
		scanf("%d",&a[i]);
		s[i]=s[i-1]^a[i];
	}
		
	for (int i=0; i<m; i++)
	{
		scanf("%d%d%d",&id,&x,&y);
		if (id==0)
			a[x]=y;
		else
		{
			printf("%d\n",s[y]^s[x-1]);
		}
	}
	*/
	return 0;
}