#include<stdio.h>
#define NMAX 100001
int n,a[NMAX],s[NMAX],v[NMAX],M;
int nr0(int x)
{
	int contor=0;
	while(x%2==0)
	{
		contor++;
		x>>=1;
	}
	return 1<<contor;
}
void op0(int poz,int val)
{
	for(;poz<=n;poz=poz+nr0(poz))
		v[poz]+=val;

}
int  op1(int st,int dr)
{
	int s=0,poz;
	for(poz=dr;poz>=1;poz=poz-nr0(poz))
		s+=v[poz];
		
		for(poz=st-1;poz>=1;poz=poz-nr0(poz))
			s-=v[poz];
	return s;
}
int op2(int k)
{
	int st=1,dr=n,s,m;
	while(st<=dr)
	{
		m=(st+dr)/2;
		s=op1(1,m);
		if(k>s)
			st=m+1;
		else
			if(k<s)
				dr=m-1;
			else
				return m;
			
	}
}
int main()
{
	int i,x,y,z;
	freopen("aib.in","r",stdin);
	freopen("aib.out","w",stdout);
	scanf("%d%d",&n,&M);
	for(i=1;i<=n;i++)
	{
		scanf("%d",a+i);
		s[i]=s[i-1]+a[i];
	}

	for(i=1;i<=n;i++)
		v[i]=s[i]-s[i-nr0(i)];
	
	for(i=1;i<=M;i++)
	{
		scanf("%d",&x);
		if(x==0)
		{
			scanf("%d%d",&y,&z);
			op0(y,z);

		}
		else
			if(x==1)
			{
				scanf("%d%d",&y,&z);
				printf("%d\n",op1(y,z));
			}
			else
			{
				scanf("%d",&y);
				printf("%d\n",op2(y));
			}
	}

	return 0;
}