/*Prroblema "Datorii" de pe infoarena, rezolvata naiv.*/
#include <stdio.h>
#define INPUT_FILE "datorii.in"
#define OUTPUT_FILE "datorii.out"
#define MAX 15000
void main()
{
	int A[MAX], n, m, i, t, v, p, q, cod, S;
	freopen(INPUT_FILE, "r", stdin);
	freopen(OUTPUT_FILE, "w", stdout);
	scanf("%d %d", &n, &m);

	for(i = 0; i < n; i++)
		scanf("%d", &A[i]);
	while(m > 0)
	{
		/*citeste operatie*/
		scanf("%d", &cod);
		switch(cod)
		{
		case 0:
			scanf("%d %d", &t, &v);
			A[t-1] -= v;
			break;
		case 1:
			scanf("%d %d", &p, &q);
			S = 0;
			for(i = p - 1; i <= q - 1; i++)
				S += A[i];
			printf("%d\n", S);
			break;
		}
		/*executa operatia*/
		m--;
	}
}