#include <iostream>


using namespace std;

int main() {



    int n, m, K;
    cin >> n >> m >> K;
    int** a = new int* [n];
    for (int i = 0; i < n; ++i) {
        a[i] = new int[m];
        for (int j = 0; j < m; ++j) {
            cin >> a[i][j];
        }
    }
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            if (a[i][j] < K) a[i][j] *= 2;
        }
    }
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            cout << a[i][j] << " ";
        }
        cout << endl;
        delete[] a[i];
    }
    delete[] a;
    return 0;
}