#include<iostream>
#include<cstdio>
#include<climits>
#define int unsigned long long
using namespace std;
typedef pair<int,int> PII;
const int MX=1000100;
const int inf=0x3fffffff;
const int LIM=LLONG_MAX;

int N, Q;
int ar[MX];
int t[4*MX], tv[4*MX]; //t[i]: &[l,r], tv[i]: 1/0
int tag[4*MX];
int read()
{
    int r=0, f=1; char ch=getchar();
    while(ch<'0'||ch>'9') {if(ch=='-') f=-1; ch=getchar();}
    while(ch>='0'&&ch<='9') {r=r*10+ch-'0'; ch=getchar();}
    return r*f;
}
void bt(int n, int s, int e)
{
    if(s==e) 
    {
        t[n]=ar[s]; 
        tv[n]=~ar[s];
        tag[n]=-1;
        return;
    }
    int mid=(s+e)>>1, ln=2*n, rn=2*n+1;
    bt(ln,s,mid); bt(rn,mid+1,e);
    tag[n]=-1;
    t[n]=t[ln]&t[rn];
    tv[n]=(t[ln]&tv[rn])|(t[rn]&tv[ln]);
}
void pd(int n, int s, int e)
{
    if(tag[n]==-1) return;
    int mid=(s+e)>>1, ln=2*n, rn=2*n+1;
    int v=tag[n];
    tv[ln]=(t[ln]&(~v))|(tv[ln]&v);
    tv[rn]=(t[rn]&(~v))|(tv[rn]&v);
    t[ln]&=v; t[rn]&=v;
    if(mid==s) tv[ln]=~t[ln];
    if(mid+1==e) tv[rn]=~t[rn];
    if(tag[ln]==-1) tag[ln]=v;
    else tag[ln]&=v;
    if(tag[rn]==-1) tag[rn]=v;
    else tag[rn]&=v;
    tag[n]=-1;
}
void upd(int n, int s, int e, int L, int R, int v, int tpe)
{
    if(s>=L&&e<=R)
    {
        if(tpe==1)
        {
            t[n]&=v;
            if(s==e) tv[n]=~t[n];
            else tv[n]=(t[n]&(~v))|(tv[n]&v);
            if(tag[n]==-1) tag[n]=v;
            else tag[n]&=v;
        }
        else 
        {
            t[n]=v; tv[n]=~v; tag[n]=-1;
        }
        return;
    }
    else if(s>R||e<L) return;
    int mid=(s+e)>>1, ln=2*n, rn=2*n+1;
    pd(n,s,e);
    upd(ln,s,mid,L,R,v,tpe);
    upd(rn,mid+1,e,L,R,v,tpe);
    t[n]=t[ln]&t[rn];
    tv[n]=(t[ln]&tv[rn])|(t[rn]&tv[ln]);
}
PII asktv(int n, int s, int e, int L, int R)
{
    if(s>R||e<L) return {LIM,LIM};
    if(s>=L&&e<=R) return {t[n],tv[n]};
    int mid=(s+e)>>1, ln=2*n, rn=2*n+1;
    pd(n,s,e);
    auto [t1,v1]=asktv(ln,s,mid,L,R);
    auto [t2,v2]=asktv(rn,mid+1,e,L,R);
    return {t1&t2,(t1&v2)|(t2&v1)};
}
int askp(int n, int s, int e, int L, int R, int v)
{
    if(s>R||e<L) return LIM;
    if(s==e) return s;
    int mid=(s+e)>>1, ln=2*n, rn=2*n+1;
    pd(n,s,e);
    if((v&tv[ln])>=(v&tv[rn])) 
    {
        int tmp=askp(ln,s,mid,L,R,v);
        if(tmp==LIM) tmp=askp(rn,mid+1,e,L,R,v);
        // cout << "ltmp=" << tmp << ", s=" << s << ", mid=" << mid << ", e=" << e << ", tvl=" << (tv[n]&tv[ln]) << ", tvr=" << (tv[n]&tv[rn]) << '\n';
        return tmp;
    }
    else 
    {
        int tmp=askp(rn,mid+1,e,L,R,v);
        if(tmp==LIM) tmp=askp(ln,s,mid,L,R,v);
        // cout << "rtmp=" << tmp << ", s=" << s << ", mid=" << mid << ", e=" << e << ", tvl=" << (tv[n]&tv[ln]) << ", tvr=" << (tv[n]&tv[rn]) << '\n';
        return tmp;
    }
}
int ask(int n, int s, int e, int L, int R)
{
    if(s>=L&&e<=R) return t[n];
    if(s>R||e<L||L>R) return LIM;
    int mid=(s+e)>>1, ln=2*n, rn=2*n+1;
    pd(n,s,e);
    return ask(ln,s,mid,L,R)&ask(rn,mid+1,e,L,R); 
}
signed main()
{
    // freopen("testdata.in","r",stdin);
    N=read(); Q=read();
    for(int i=1;i<=N;i++)
    {
        ar[i]=read();
    }
    bt(1,1,N);
    while(Q--)
    {
        int opt=read();
        if(opt==1)
        {
            int l=read(), r=read(), x=read();
            upd(1,1,N,l,r,x,1);
        }
        if(opt==2)
        {
            int s=read(), x=read();
            // cout << "bef: "; for(int i=1;i<=N;i++) cout << ask(1,1,N,i,i) << " "; cout << '\n';
            upd(1,1,N,s,s,x,2);
            // cout << "aft: "; for(int i=1;i<=N;i++) cout << ask(1,1,N,i,i) << " "; cout << '\n';
        }
        if(opt==3)
        {
            // cout << "ar: "; for(int i=1;i<=N;i++) cout << ask(1,1,N,i,i) << " "; cout << '\n';
            int l=read(), r=read();
            int sum=asktv(1,1,N,l,r).second;
            int p=askp(1,1,N,l,r,sum);
            // cout << "p=" << p << '\n';
            cout << (ask(1,1,N,l,p-1)&ask(1,1,N,p+1,r)) << '\n';
        }
    }
    return (0-0);
}