#include <bits/stdc++.h>
#define pas(x) ((x^(x-1))&x)
using namespace std;
ifstream f("datorii.in");
ofstream g("datorii.out");
int n,m,aib[200002];

void update(int x,int val)
{
    for(int i=x;i<=n;i+=pas(i))
        aib[i]+=val;
}

int suma(int x)
{
    int rez=0;
    for(int i=x;i>0;i-=pas(i))
        rez+=aib[i];
    return rez;
}

int main()
{
    f>>n>>m;
    int val,v,x,y;
    for(int i=1;i<=n;i++)
        f>>val,update(i,val);
    for(int i=1;i<=m;i++)
    {
        f>>v>>x>>y;
        if(v==0)
            update(x,-y);
        else
            g<<suma(y)-suma(x-1)<<'\n';
    }
    return 0;
}