#include <iostream>
#include <vector>
#include <queue>
using namespace std;
int main() {
    int L, W;
    cin >> L >> W;
    int N;
    cin >> N;
    int b;
    cin >> b;
    vector<pair<int, int> > v;
    for(int i = 0; i < b; i++) {
        int a, c;
        cin >> a >> c;
        v.push_back(make_pair(a, c));
    }
    queue<vector<pair<int, int> > > q;
    q.push(v);
    int barokni = 0;
    while(!q.empty()) {
        vector<pair<int, int> > c = q.front();
        q.pop();
        barokni += c.size();
        if(barokni >= N) {
            break;
        }
        for(int k = 0; k < 4; k++) {
            int ti = c[k].first + di[k];
            int tj = c[k].second + dj[k];
        }
        
    }
    return 0;
}

/*

 */