#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;
int main() {
  int N,Q; cin >> N >> Q;
  vector<pair<int,int>> A(Q);
  vector<bool> X(N + 1,false);
  long long ans = 0;
  for(int i = 0; i < Q; i++) {
    int l,r; cin >> l >> r;
    for(int j = l; j <= r; j++) {
      if(X[j]) {
        X[j] = false;
        ans--;
      }else {
        X[j] = true;
        ans++;
      }
    }
    cout << ans << endl;
  }
}