#include <bits/stdc++.h>
using namespace std;
int main(){
    int N,Q;
    cin>>N>>Q;
    vector<int> lamp(N,0);
    int ans=0;
    for(int i=0;i<Q;++i){
        int L,R;
        cin>>L>>R;
        for(int j=L-1;j<R;++j){
            lamp[j]=1-lamp[j];
            ans+=2*lamp[j]-1;
        }
        cout<<ans<<endl;
    }
}