#include<iostream>
using namespace std;
int a[1000005],b[1000005];
int main()
{
	int n,m;
	cin>>n>>m;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
		if(a[i]%2==0) b[i]=b[i-1]+1;
		else b[i]=b[i-1];
	}
	cout<<endl;
	for(int i=1;i<=m;i++)
	{
		int x,y;
		cin>>x>>y;
		cout<<b[y]-b[x-1]<<endl;
	}
}