#include <fstream>
#include <vector>

using namespace std;
ifstream cin ("castel.in");
ofstream cout ("castel.out");
struct ura{
    int x, y;
};
ura coada[25000];
vector <ura> lista[25000];
int ca[155][155];
int a[155][155];
int vc[25000];
int dirL[4] = {0, 1, 0, -1};
int dirC[4] = {1, 0, -1, 0};
int main()
{
    int n, m, k, x0, y0, inc, sf;
    cin >> n >> m >> k;
    x0 = k / m + 1;
    y0 = k % m;
    if (!y0)
    {
        x0--;
        y0 = m;
    }
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++)
            cin >> a[i][j];
    inc = sf = 1;
    coada[1].x = x0;
    coada[1].y = y0;
    ca[x0][y0] = 1;
    while (inc <= sf)
    {
        int x = coada[inc].x;
        int y = coada[inc].y;
        inc++;
        if (vc[x * m - m + y] == 0)
        {
            for (int i = 0; i < lista[x * m - m + y].size(); i++)
            {
                coada[++sf].x = lista[x * m - m + y][i].x;
                coada[sf].y = lista[x * m - m + y][i].y;
            }
            vc[x * m - m + y] = 1;
        }
        for (int i = 0; i < 4; i++)
        {
            int xx = x + dirL[i];
            int yy = y + dirC[i];
            if (xx > 0 && yy > 0 && xx <= n && yy <= m && ca[xx][yy] == 0)
            {
                ca[xx][yy] = 1;
                if (vc[a[xx][yy]] == 1)
                {
                    coada[++sf].x = xx;
                    coada[sf].y = yy;
                }
                else
                    lista[a[xx][yy]].push_back({xx, yy});
            }
        }
    }
    cout << sf;
    return 0;
}