#include <bits/stdc++.h>
#define rep(i, l, r) for (int i = (l); i < (r); i++)
using namespace std;

typedef long long ll;

int main() {
    int N, Q, ans = 0;
    cin >> N >> Q;
    vector<int> L(Q), R(Q);
    rep(i, 0, Q) cin >> L[i] >> R[i];
    vector<bool> A(N + 1, 0);
    rep(i, 0, Q) {
        rep(j, L[i], R[i] + 1) {
            A[j] = 1 - A[j];
            if (A[j]) ans++;
            else ans--;
        }
        cout << ans << endl;
    }
}