# include <iostream>
# include <fstream>

using namespace std;

# define MAX_N 15000

int aib[1 + MAX_N];

void update( int pos, int val ) {
    if ( pos > 0 ) {
        aib[pos] += val;
        update( pos - ( pos & -pos ), val );
    }
}

int query( int pos ) {
    if ( pos > MAX_N )
        return 0;
    else
        return aib[pos] + query( pos + ( pos & -pos ) );
}

int main() {
    ifstream fin( "datorii.in" );
    ofstream fout( "datorii.out" );

    int n, m, i, c, a, b;

    fin >> n >> m;

    for ( i = 1; i <= n; i ++ ) {
        fin >> a;
        update( i, a );
    }

    for ( i = 0; i < m; i ++ ) {
        fin >> c >> a >> b;
        if ( c == 0 )
            update( a, -b );
        else
            fout << query( a ) - query( b + 1 ) << '\n';
    }

    fin.close();
    fout.close();

    return 0;
}