import java.util.*;

public class Main {
    
    public static void main(String[] args){
        
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] cnt = new int[N];
        int Q = sc.nextInt();
        int ans = 0;
        for( int i = 0; i < Q; i++ ) {
            int L = sc.nextInt()-1;
            int R = sc.nextInt()-1;
            for( int j = L; j <= R; j++ ) {
                cnt[j]++;
                if( cnt[j]%2 == 0 ) ans--;
                else ans++;
            }
            System.out.println(ans);
        }
        
        sc.close();
        
    }
    
}