import java.io.*;
import java.util.*;

class Main
{
    public static void main(String args[])throws Exception
    {
        BufferedReader bu=new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb=new StringBuilder();
        String s[]=bu.readLine().split(" ");
        int n=Integer.parseInt(s[0]),q=Integer.parseInt(s[1]);
        int ans=0,i;
        boolean t[]=new boolean[n];
        while(q-->0)
        {
            s=bu.readLine().split(" ");
            int l=Integer.parseInt(s[0])-1,r=Integer.parseInt(s[1])-1;
            for(i=l;i<=r;i++)
            {
                t[i]=!t[i];
                if(t[i]) ans++;
                else ans--;
            }
            sb.append(ans+"\n");
        }
        System.out.print(sb);
    }
}