#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using ll = long long;
constexpr long long MOD = 1000000007;
constexpr long long MOD2 = 998244353;
constexpr long long INF = 1LL << 60;
const long double PI = acosl(-1.0);
constexpr long double EPS = 1e-11;
template<class T> inline bool chmin(T& a, T b) {
	if (a > b) {
		a = b;
		return true;
	}
	return false;
}
template<class T> inline bool chmax(T& a, T b) {
	if (a < b) {
		a = b;
		return true;
	}
	return false;
}
int main(){
    ll N, Q;
    cin >> N >> Q;
    vector<ll> A(N, 0);
    assert(N <= 500000);
    assert(Q <= 100000);
    ll ans = 0;
    while (Q--) {
        ll l, r;
        cin >> l >> r;
        assert(1 <= l and l <= N);
        assert(l <= r and r <= N);
        assert(r - l <= 10);
        l--;
        r--;
        for (ll i = l; i <= r;i++){
            A[i] ^= 1;
            if (A[i] == 1)
                ans++;
            else
                ans--;
        }
        cout << ans << endl;
    }
}