#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
using namespace std;
int n,m,i,j,k;
int a1,b,x,y;
int a[2000010],c[2000010];
int lowbit(int x)
{
    return x&-x;
}
void update(int i,int k)
{
    while(i<=n)
    {
        c[i]+=k;
        i+=lowbit(i);
    }
}
int sum(int i)
{
    int sum=0;
    while(i>0)
    {
        sum+=c[i];
        i-=lowbit(i);
    }
    return sum;
}
int main()
{
    cin>>n>>m;
    for(i=1;i<=n;i++)
        cin>>a[i];
    for(i=1;i<=n;i++)
        update(i,a[i]);
    while(m--)
    {
        cin>>a1;
        if(a1==1)
        {
            cin>>x>>k;
            update(x,k);
        }
        else if(a1==2)
        {
            cin>>x>>y;
            cout<<sum(y)-sum(x-1)<<endl;
        }
    }
    return 0;
}