#include <stdio.h>
using namespace std;
FILE*f=fopen("datorii.in","r");
FILE*g=fopen("datorii.out","w");
#define zeros(i) i&(-i)
int AIB[15005],i,n,m,j,x,a,b;
bool op;
void Update(int a,int x)
{
    for (int i=a;i<=n;i+=zeros(i)) AIB[i]-=x;
}
int Query(int a)
{
    int S=0;
    for (int i=a;i>0;i-=(zeros(i))) S+=AIB[i];
    return S;
}
int main()
{
    fscanf(f,"%d %d",&n,&m);
    for (i=1;i<=n;i++) {fscanf(f,"%d",&x); Update(i,-x);}
    for (i=1;i<=m;i++)
    {
        fscanf(f,"%d",&op);
        if (op)
        {
            fscanf(f,"%d %d",&a,&b);
            fprintf(g,"%d\n",Query(b)-Query(a-1));
        }
        else
        {
            fscanf(f,"%d %d",&a,&b);
            Update(a,b);
        }
    }
    return 0;
}