#include<fstream>
#include<cmath>
using namespace std;
long n,m,i,v[100001],op,a,b,nr,x,mij,aux,val;
long s[100001];
short zero(long x)
{long nr=0;
	while(x%2==0){ nr++; x/=2;}
	return nr;
}
long put(short x,short p)
{long rez=x,i;
   if(p==0)return 1;
	for(i=2;i<=p;i++)
		rez*=x;
	return rez;
}
void modifica(long poz,long val)//elementului de pe pozitia a i se va adauga valoarea b
{long i,nr=0;
	for(i=poz;i<=n;i+=nr)
	{
		if(i<=n)v[i]+=val;
		nr=powl(2,zero(i));
	}
}
long long calculeaza(long pozf)
{long i,nr=0,S=0;
	for(i=pozf;i>0;i-=nr)
	{
		nr=powl(2,zero(i));
		if(i>0)S+=v[i];
	}
	return S;
}
void search(int a,int p,int u)
{
	mij=(p+u)/2;
	while(p<=u)
	{    mij=(p+u)/2;
	      x=calculeaza(mij);
		if(x<a) p=mij+1;
		  else               
		if(x>a) u=mij-1;
		  else 
	    if(x==a){p=u+1; val=mij;}
		  else return ;
	}
}
int main()
{
	ifstream f("aib.in");ofstream g("aib.out");
	f>>n>>m;
	for(i=1;i<=n;i++)
	{ 
	  f>>x; 
	  s[i]=s[i-1]+x; 
	  v[i]=s[i]-s[i-put(2,zero(i))];//v[i] retine suma de la <i-2^k+1,i>,unde k=nr de o finale in reprezent binara a lui 
	}
	for(i=1;i<=m;i++)
	{
		f>>op;
		if(op<2)f>>a>>b;
		else f>>a;
		if(op==0)modifica(a,b);
		if(op==1)g<<calculeaza(b)-calculeaza(a-1)<<"\n";
		if(op==2){ val=-1; search(a,1,n); g<<val<<"\n";}
	}
	f.close();g.close();
return 0;}