#include<cstdio>

const int maxN=15005;

int n,m;
int a[maxN];

int lsb(int x)
{
    return x&(x^(x-1));
}

int aib_query(int pos)
{
    int sol=0;
    while(pos)
    {
        sol+=a[pos];
        pos-=lsb(pos);
    }
    return sol;
}

void aib_update(int pos,int val)
{
    while(pos<=n)
    {
        a[pos]+=val;
        pos+=lsb(pos);
    }
}

int main()
{
    freopen("datorii.in","r",stdin);
    freopen("datorii.out","w",stdout);
    scanf("%d%d",&n,&m);

    int i;
    for(i=1;i<=n;++i) {
        int aux;
        scanf("%d",&aux);
        aib_update(i, aux);
    }

    int b,x,y;
    for(i=1;i<=m;++i)
    {
        scanf("%d%d%d",&b,&x,&y);
        if(b==0)
        {
            aib_update(x,-y);
        }
        else
        {
            printf("%d\n",aib_query(y)-aib_query(x-1));
        }
    }
    return 0;
}