#include <cstdio>
#define ub(x) (x&(-x))
using namespace std;
int n,m,AIB[15010],i,op,p,q,t,v,sol,x;

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

int sum(int x)
{
    int i,s=0;
    for(i=x; i>0; i-=ub(i))
        s+=AIB[i];
    return s;
}

int main()
{
    freopen("datorii.in","r",stdin);
    freopen("datorii.out","w",stdout);
    scanf("%d %d\n",&n,&m);
    for(i=1; i<=n; ++i)
    {
        scanf("%d ",&x);
        add(i,x);
    }
    scanf("\n");
    for(i=1; i<=m; ++i)
    {
        scanf("%d ",&op);
        if(op==0)
        {
            scanf("%d %d\n",&t,&v);
            add(t,-v);
        }
        else
        {
            scanf("%d %d\n",&p,&q);
            sol=sum(q)-sum(p-1);
            printf("%d\n",sol);
        }
    }
    return 0;
}