#include<bits/stdc++.h>
#include<random>
using namespace std;
//#define int long long
#define REP(i,m,n) for(int i=(m);i<(n);i++)
#define rep(i,n) REP(i,0,n)
#define pb push_back
#define all(a) a.begin(),a.end()
#define rall(c) (c).rbegin(),(c).rend()
#define mp make_pair
#define endl '\n'
//#define vec vector<ll>
//#define mat vector<vector<ll> >
#define fi first
#define se second
//#define double long double
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll,ll> pll;
//typedef long double ld;
typedef complex<double> Complex;
const ll INF=1e9+7;
const ll MOD=998244353;
const ll inf=INF*INF;
const ll mod=MOD;
const ll MAX=1000000;
const double PI=acos(-1.0);
typedef vector<vector<ll> > mat;
typedef vector<ll> vec;


void solve(){
    ll n,q;cin>>n>>q;
    vector<ll>a(n+1);
    ll now=0;
    rep(i,q){
        ll l,r;cin>>l>>r;
        l--;
        REP(j,l,r){
            a[j]++;
            if(a[j]%2){
                now++;
            }else{
                now--;
            }
        }
        cout<<now<<endl;
    }
}

signed main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    solve();
}