#include<cstdio>
#define ub(x) (x&(-x))

using namespace std;

int aib[100002],op,n,m,x,y,i;

void add(int pos,int val)
{
    for(int i=pos;i<=n;i+=ub(i))
    {
        aib[i]+=val;
    }
}

int computionare(int pos)
{
    int i,s=0;
    i=pos;
    while(i>0)
    {
        s+=aib[i];
        i-=ub(i);
    }
    return s;
}

int main()
{
    freopen("datorii.in","r",stdin);
    freopen("datorii.out","w",stdout);
    scanf("%d%d",&n,&m);
    for(i=1;i<=n;i++)
    {
        scanf("%d",&x);
        add(i,x);
    }
    for(i=1;i<=m;i++)
    {
        scanf("%d",&op);
        if(op==1)
        {
            scanf("%d%d",&x,&y);
            printf("%d\n",computionare(y)-computionare(x-1));
        }
        if(op==0)
        {
            scanf("%d%d",&x,&y);
            add(x,-y);
        }
    }
}