#include <iostream>
#include "vector"
#include "algorithm"
using namespace std;

long long n,q,s,maxi,a,b,i;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    cin>>n>>q;
    maxi=-99999;
    vector <int> y(n+1,0);
    for (i=1;i<=n;++i)
    {
        cin>>y[i];
        if (maxi<y[i]) maxi=y[i];
    }

    vector <int> x(maxi+1,0);
    for (i=1;i<=n;++i)
    {
        x[y[i]]++;
    }

    for (i=maxi-1;i>=1;--i)
    {
        x[i]+=x[i+1];
    }

    for (i=1;i<=q;++i)
    {
        cin>>a>>b;
        s=abs(b-a)+1;

        if (s<=maxi)
        {
            if (a+b<=maxi)
            {
                cout<<x[s]-x[a+b]<<"\n";
            }
            else cout<<x[s]<<"\n";
        }
        else cout<<"0\n";
    }
    return 0;
}