#include <stdio.h>
#define NMAX 15005
int n,m,aib[NMAX];
int lsb(int x)
{
	return x & -x;
}
void update(int poz,int val)
{
	int i;
	for (i=poz; i<=n; i+=lsb(i))
		aib[i]+=val;
}
int query(int poz)
{
	int i,sum=0;
	for (i=poz; i>=1; i-=lsb(i))
		sum+=aib[i];
	return sum;
}
int main()
{
	freopen("datorii.in","r",stdin);
	freopen("datorii.out","w",stdout);
	scanf("%d%d",&n,&m);
	int i,tip,x,y;
	for (i=1; i<=n; i++)
	{
		scanf("%d",&x);
		update(i,x);
	}
	while (m--)
	{
		scanf("%d%d%d",&tip,&x,&y);
		if (!tip)
			update(x,-y);
		else
			printf("%d\n",query(y)-query(x-1));
	}
	return 0;
}