// racshalosgraf.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <deque>
#include <vector>
#include <queue>

using namespace std;

struct adat
{
    bool lat;
    int tav;
    vector<int>sz;
};

int n, m, i, j, db, mini, l, a, b,ujsz,kezd,akt,e;
vector<adat>x;
vector<int>megold;
queue<int>q;

int main()
{
    cin >> n >> m>>ujsz;
    x.resize(n * m+1);
    for (i = 1; i <= n; ++i)
    {
        for(j = 1; j <= m; ++j)
        {
            db++;
            if (i > 1) x[db].sz.push_back(db - m);
            if (j > 1) x[db].sz.push_back(db - 1);
            if (j < m) x[db].sz.push_back(db + 1);
            if (i < n) x[db].sz.push_back(db + m);

        }
    }
    for (l = 1; l <= ujsz; ++l)
    {
        cin >> a >> b;
        x[a].sz.push_back(b);
        x[b].sz.push_back(a);
        mini = 0;
        for (i = 1; i <= n * m; ++i)
        {
            kezd = i;
            q.push(kezd);
            x[kezd].lat = true;
            x[kezd].tav = 0;
            while (!q.empty())
            {
                akt = q.front();
                q.pop();
                for (auto& e : x[akt].sz)
                {
                    if (!x[e].lat)
                    {
                        x[e].lat = true;
                        x[e].tav = x[akt].tav + 1;
                        if (x[e].tav > mini)
                        {
                            mini = x[e].tav;
                        }
                        q.push(e);
                    }
                }
            }
            for (j = 1; j <= n * m; ++j)
            {
                x[j].lat = false;
                x[j].tav = 0;
            }
        }
        megold.push_back(mini);
        
    }
    for (i = 0; i<megold.size(); ++i)
    {
        cout << megold[i] << "\n";
    }
    return 0;
}
/*
3 4 4
1 6
7 10
2 12
4 9


*/
// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu

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