#include <bits/stdc++.h>
#define int long long
using namespace std;
using vec_int = vector<int>;
using vec_ii = vector<vec_int>;
using vec_iii = vector<vec_ii>;
using vec_iiii = vector<vec_iii>;
using P = pair<int,int>;
using T = tuple<int,int,int, int>;
using ll = long long;
using ld = long double;
#define rep(i, n) for(int i = 0; i < (int)(n); i++)

void cout_line(vector<int> &a){
    for(int i=0;i<a.size();i++){
        if(i<a.size()-1){
            cout<<a.at(i)<<" ";
        }else{
            cout<<a.at(i)<<endl;
        }
    }
}

signed main(){
    ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int N, Q; cin>>N>>Q;
    vec_int rump(N+1, 0);
    int ans = 0;
    rep(q, Q){
        int L, R; cin>>L>>R;
        for(int i=L-1;i<R;i++){
            rump.at(i) +=1;
            rump.at(i) %= 2;
            if(rump.at(i)==1){
                ans++;
            }else{
                ans--;
            }
        }
        cout<<ans<<endl;

    }


    return 0;
}