#include <stdio.h>
#define NMAX 15005
int n,m,aib[NMAX];
int lsb(int x)
{
    return x & -x;
}
void update(int poz,int val)
{
    int i;
    for (i=poz; i<=n; i+=lsb(i))
        aib[i]+=val;
}
int query(int poz)
{
    int i,sum=0;
    for (i=poz; i>=1; i-=lsb(i))
        sum+=aib[i];
    return sum;
}
int main()
{
    freopen("datorii.in","r",stdin);
    freopen("datorii.out","w",stdout);
    scanf("%d%d",&n,&m);
    int i,tip,x,y;
    for (i=1; i<=n; i++)
    {
        scanf("%d",&x);
        update(i,x);
    }
    while (m--)
    {
        scanf("%d%d%d",&tip,&x,&y);
        if (!tip)
            update(x,-y);
        else
            printf("%d\n",query(y)-query(x-1));
    }
    return 0;
}