#include <iostream>
#include <cstdio>
#define nmax 15005
using namespace std;

int n,m;
int aib[nmax];

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

inline void add(int x,int q)
{
    for(int i=x;i<=n;i+=zeros(i)) aib[i]+=q;
}

inline int compute(int x)
{
    int rez=0;
    for(int i=x;i>=1;i-=zeros(i))   rez+=aib[i];
    return rez;
}

int main()
{
    int i,nr,tip,x,y;
    freopen("datorii.in","r",stdin);
    freopen("datorii.out","w",stdout);
    scanf("%d%d",&n,&m);
    for(i=1;i<=n;i++)
    {
        scanf("%d",&nr);
        add(i,nr);
    }
    for(i=1;i<=m;i++)
    {
        scanf("%d%d%d",&tip,&x,&y);
        if(tip==0)  add(x,y*-1);
        if(tip==1)  printf("%d\n",compute(y)-compute(x-1));
    }
    fclose(stdin);
    fclose(stdout);
    return 0;
}