using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (n, q) = (c[0], c[1]);
        var map = NArr(q);
        var ans = new int[q];
        var lamp = new bool[n];
        var tmp = 0;
        for (var i = 0; i < q; ++i)
        {
            for (var j = map[i][0] - 1; j < map[i][1]; ++j)
            {
                if (lamp[j]) --tmp;
                else ++tmp;
                lamp[j] = !lamp[j];
            }
            ans[i] = tmp;
        }
        WriteLine(string.Join("\n", ans));
    }
}