#include <iostream>
#include <algorithm>
#include <locale>

using namespace std;

int main() {
    int n, m, x, count = 0;
    bool check;
    cin >> n >> m >> x;
    int** arr = new int*[n];
    for (int i = 0; i < n; i++)
    {
        arr[i] = new int[m];
        check = false;
        for (int j = 0; j < m; j++)
        {
            cin >> arr[i][j];
            if (arr[i][j] == x && !check)
            {
                count++;
                check = true;
            }
        }
    }
    cout << count;
    return 0;
}