all=[0]*2000100
sz2=[0]*2000100
def psup(rt):
    all[rt]=all[rt*2]+all[rt*2+1] 
def bud(l,r,rt):
    if l==r:
        all[rt]=sz2[l-1]
    else:
        mid=(l+r)//2
        bud(l,mid,rt*2)
        bud(mid+1,r,rt*2+1)
        psup(rt)
def upd(p,k,l,r,rt):
    all[rt]+=k
    if l!=r:
        mid=(l+r)//2
        if p<=mid:
            upd(p,k,l,mid,rt*2)
        else:
            upd(p,k,mid+1,r,rt*2+1)
        psup(rt)
def que(ll,rr,l,r,rt):
    if ll<=l and r<=rr:
        return all[rt]
    else:
        mid=(l+r)//2
        ret=0
        if ll<=mid:
            ret+=que(ll,rr,l,mid,rt*2)
        if mid < rr:
            ret+=que(ll,rr,mid+1,r,rt*2+1)
        return ret
sz1=[int(x) for x in input().strip().split(" ")]
n=sz1[0]
m=sz1[1]
sz2=[int(x) for x in input().strip().split(" ")]
bud(1,n,1)
for i in range(m):
    xxx=[int(x) for x in input().strip().split(" ")]
    op=xxx[0]
    if op==1:
        upd(xxx[1],xxx[2],1,n,1)
    else:
        res=que(xxx[1],xxx[2],1,n,1)
        print(res)