#include <iostream>
#include<fstream>
#include<math.h>

using namespace std;

#define zeros(x) ( (x ^ (x - 1)) & x )

int main()
{
    int nr,n,m,a[15002],i,st,dr,val,ind,c[15002],s1,s2,cod,b[15002];

    ifstream f("datorii.in");
    ofstream g("datorii.out");
    f>>n>>m;
    for(i=1;i<=n;i++)
        f>>a[i];
    b[1]=a[1];
    for(i=2;i<=n;i++)
        b[i]=b[i-1]+a[i];
    for(i=1;i<=n;i++)
        if(i%2==1)
            c[i]=a[i];
        else
        {
            nr=i-zeros(i);
            if(nr==0)
                c[i]=b[i];
            else
                c[i]=b[i]-b[nr];
        }

    for(i=1;i<=m;i++)
    {
        f>>cod;
        if(cod==0)
        {
            f>>ind>>val;
            while(ind<=n)
            {
                c[ind]=c[ind]-val;
                ind=ind+zeros(ind);
            }
        }
        else
        {
            f>>st>>dr;
            s1=0;
            while(dr>0)
            {
                s1=s1+c[dr];
                dr=dr-zeros(dr);
            }
            st--;
            s2=0;
            while(st>0)
            {
                s2=s2+c[st];
                st=st-zeros(st);
            }
            g<<s1-s2<<endl;
        }
    }
    return 0;
}