N = 100100
tr = [0] * N
def lowbit(x):
    # x&-x可以取到最右边的1
    return x&-x
# 添加固定写法
def add(now, val):
    i = now
    while(i<N):
        tr[i] += val
        i += lowbit(i)
# 查询固定写法
def query(now):
    res = 0
    i = now
    while(i>0):
        res += tr[i]
        i -= lowbit(i)
    return res

n, q = map(int, input().split())
a = [0]
a.extend(list(map(int, input().split())))
for i in range(1, n+1):
    add(i, a[i])
for _ in range(0, q):
    p, x, y = map(int, input().split())
    if(p==1):
        # 修改:把原来的值抹掉,再加上新值
        add(x, -a[x])
        # 根据题目
        a[x] += y
        add(x, a[x])
    else:
        print(query(y)-query(x-1))