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

ifstream in("datorii.in");
ofstream out("datorii.out");

int aib[15001];
int n;
int suma(int x)
{
    int s=0,p=0;
    while (x>=1){
        while(x>0)
        {
        int k=1;
        while (k<=x)
            k*=2;
        k/=2;
        x-=k;
        p+=k;
        s+=aib[p];
    }
    if (x==1)
        return s+aib[p+1];
    else
        return s;
}
}

int sumaintervale(int x, int y)
{
    return suma(y)-suma(x-1);
}

void adaugavaloare(int x,int val)
{
    while(x<=n)
    {
        aib[x]+=val;
        int k=1;
        int aux=x;
        while (aux%2==0)
        {
            aux/=2;
            k*=2;
        }
        x+=k;
    }


}

int main()
{
    int m;
    in >>n;
    in >>m;
    int v[n+1];

    for (int i=1;i<=n;i++)
    {
        aib[i]=0;
        in >>v[i];
        if (i%2==1)
            aib[i]=v[i];
    }

    for (int i=2;i<=n;i+=2)
    {
        int k=1;
        int x=i;

        while (x%2==0)
        {
            x/=2;
            k*=2;
        }

        for (int j=i;j>=i-k+1;j--)
             aib[i]+=v[j];

    }

    for (int i=1;i<=m;i++)
    {
        int A;
        in >>A;
        if (A==1)
        {
            int st,dr;
            in >>st>>dr;
            out << sumaintervale(st,dr);
        }
        if (A==0)
        {
            int zi,valoare;
            in >> zi >> valoare;
            adaugavaloare(zi,valoare);
        }
    }
    return 0;
}