#include <stdio.h>
#include <fstream>
using namespace std;

#define in "aib.in"
#define out "aib.out"
#define dim 100001

int N, M, T;
int Arb[dim];
int C, S;

void Update(int,int);
int Query(int);

int main()
{
    memset(Arb,0,sizeof(Arb));
    int K, X, Y;
    
    freopen(in,"r",stdin);
    freopen(out,"w",stdout);
    
    scanf("%d%d", &N, &M);
    for ( int i = 1; i <= N; i++ )
    {
        scanf("%d", &T);
        Update(i,T);
    }
    
    for ( ; M; M-- )
    {
        scanf("%d%d%d", &K, &X, &Y);
        if ( K == 0 ) printf("%d\n", Query(Y)-Query(X-1));
        else          Update(X,Y);
    }
}

void Update(int poz, int val)
{
     C = 0;
     while ( poz <= N )
     {
           Arb[poz] += val;
           while ( !(poz & (1<<C)) ) C++; // numarul de zerouri terminale ale lui poz
           poz += (1<<C);
           C += 1;
     }
}

int Query(int poz)
{
    C = 0, S = 0;
    while ( poz > 0 )
    {
          S += Arb[poz];
          while ( !(poz & (1<<C)) ) C++;
          poz -= (1<<C);
          C += 1;
    }
    
    return S;
}