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#include <bits/stdc++.h>
using namespace std;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    int64_t n;
    int q;
    cin >> n >> q;
    vector<int64_t> zap(q);
    vector<bool> sequence(n + 1, 0);
    vector<bool> zloz(n);
    vector<int64_t> primes;
    for (int i = 2; i < n; i++)
    {
        if (!zloz[i])
        {
            primes.push_back(i);
            for (int j = 2 * i; j < n; j += i)
            {
                zloz[j] = true;
            }
        }
    }
    int nprimes = primes.size();
    vector<map<int64_t, int64_t>> modcounts(nprimes);
    multiset<int64_t> allres;
    for (int i = 0; i < q; i++)
    {
        cin >> zap[i];
        if (sequence[zap[i]] == 0)
        {
            sequence[zap[i]] = 1;
            for (int j = 0; j < nprimes; j++)
            {
                auto it = modcounts[j].find(zap[i] % primes[j]);
                if (it != modcounts[j].end())
                {
                    allres.erase(allres.find(it->second));
                    it->second++;
                    allres.insert(it->second);
                }
                else{
                    modcounts[j][zap[i] % primes[j]] = 1;
                    allres.insert(1);
                }
            }
        }
        else{
            sequence[zap[i]] = 0;
            for (int j = 0; j < nprimes; j++)
            {
                auto it = modcounts[j].find(zap[i] % primes[j]);
                allres.erase(allres.find(it->second));
                it->second--;
                if(it->second == 0){
                    modcounts[j].erase(zap[i] % primes[j]);
                }
                else{
                    allres.insert(it->second);
                }
            }
        }
        if(allres.size() == 0){
            cout<<"0\n";
        }
        else{
            cout<<*prev(allres.end())<<"\n";
        }
    }
}