insert before

#include <iostream>
#include <vector>
#include <cmath>
#include <limits.h>

using namespace std;

void inputArray(int ***a, int n, int m) {
    int **b = new int*[2 * n];

	for (int i = 0; i < n; i++) {
	    b[i] = new int[m];
		for(int j = 0; j < m; j++) {
		    cin >> b[i][j];
		}
	}
	*a = b;
}

void inputArrayToInsert(int **b, int n) {
	*b = new int[n];
	for (int i = 0; i < n; i++)
		    cin >> (*b)[i];
}

void print(int **a, int n, int m) {
	for (int i = 0; i < n; i++) {
		for(int j = 0; j < m; j++)
		    cout << a[i][j] << " ";
		cout << endl;
	}
}

void insert(int **a, int *b, int &n, int m, int x) {
	for (int i = 0; i < n; i++) {
	    for(int j = 0; j < m; j++) {
	        if (a[i][j] == x) {
    			for (int k = n; k > i; k--) {
    				a[k] = a[k - 1];
    			}

    			a[i] = new int[m];
    			for(int k = 0; k < m; k++)
                    a[i][k] = b[k];

    			i++;
    			n++;
    			break;
	        }
		};
	}
}

void delete1dem(int **a, int n) {
    delete [](*a);
}

void delete2dem(int ***a, int n) {
    for(int i = 0; i < n; i++) {
	    delete [](*a)[i];
	}
    delete [](*a);
}

int main() {

	int n, m, x;
	cin >> n >> m >> x;

	int **a, *b;

	inputArray(&a, n, m);
	inputArrayToInsert(&b, m);

	insert(a, b, n, m, x);

	print(a, n, m);

	delete1dem(&b, n); //one-dimensional
	delete2dem(&a, n);

	return 0;
}