#include<cstdio>
using namespace std;
int n,m,t,a,b,v[150005];
inline int LBS(int x)
{
    return (x&(-x));
}
inline void Update(int poz, int val)
{
    for (int i=poz;i<=n;i+=LBS(i))
        v[i]+=val;
}
inline int Sum(int poz)
{
    int s=0;
    for (int i=poz;i;i-=LBS(i))
        s+=v[i];
    return s;
}
int main()
{
    int i;
    freopen("datorii.in","r",stdin);
    freopen("datorii.out","w",stdout);
    scanf("%d%d",&n,&m);
    for (i=1;i<=n;++i)
    {
        scanf("%d",&t);
        Update(i,t);
    }
    for (i=1;i<=m;++i)
    {
        scanf("%d%d%d",&t,&a,&b);
        if (!t) Update(a,-b);
        else printf("%d\n",Sum(b)-Sum(a-1));
    }
    return 0;
}