UVa 10813 - Traditional BINGO * (follow the problem description)

Link: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=20&page=show_problem&problem=1754
Sol:

#include <iostream>
	using namespace std;
	class mat {
	public:
	int m, n;
	int **board;
	int *rows;
	int *cols;
	int *diag;
	mat(int m, int n) {
	this->m = m;
	this->n = n;
	board = new int*[m];
	for (int i = 0; i < m; i++) {
	board[i] = new int[n];
	}
	rows = new int[m];
	cols = new int[n];
	diag = new int[2];
	reset();
	}
	void set(int i, int j, int c) {
	board[i][j] = c;
	}
	bool checkNumber(int number) {
	int col = (number -1) / 15;
	int i = 0;
	bool found = false;
	for (i = 0; i < m; i++) {
	if (board[i][col] == number) {
	rows[i]--;
	cols[col]--;
	if (i == col)
	diag[0]--;
	if (i == (n-col-1))
	diag[1]--;
	found = true;
	board[i][col] = 0;
	break;
	}
	}
	if (found) {
	if (rows[i] == 0)
	return true;
	if (cols[col] == 0)
	return true;
	if (diag[0] == 0)
	return true;
	if (diag[1] == 0)
	return true;
	}
	return false;
	}
	bool isOnBoard(int i, int j) {
	return i >= 0 && i < m && j >= 0 && j < n;
	}
	void reset() {
	for (int i = 0; i < m; i++) {
	rows[i] = m;
	cols[i] = n;
	for (int j = 0; j < n; j++)
	board[i][j] = 0;
	}
	rows[m/2]--; // remove the guess for the center square
	cols[m/2]--;
	diag[0] = diag[1] = 4;
	}
	void print() {
	for (int i = 0; i < m; i++) {
	for (int j = 0; j < n; j++) {
	cout << board[i][j] << " ";
	}
	cout << endl;
	}
	cout << "rows: " << endl;
	for (int i = 0; i < m; i++)
	cout << rows[i] << " ";
	cout << endl;
	cout << "cols: " << endl;
	for (int i = 0; i < n; i++)
	cout << cols[i] << " ";
	cout << endl;
	cout << "diag: " << diag[0] << " " << diag[1] << endl;
	}
	~mat() {
	for (int i = 0; i < m; i++) {
	delete [] board[i];
	}
	delete [] board;
	delete [] rows;
	delete [] cols;
	delete [] diag;
	}
	};
	int main() {
	int tc, m = 5, n = 5, number;
	int c;
	mat ticket(m, n);
	cin >> tc;
	while (tc--) {
	ticket.reset();
	for (int i = 0; i < m; i++)
	for (int j = 0; j < n; j++) {
	if (!(i == 2 && j == 2)) {
	cin >> c;
	ticket.set(i, j, c);
	}
	}
	bool winner = false;
	int n = 0;
	for (int i = 0; i < 75; i++) {
	cin >> number;
	if (!winner) {
	winner = ticket.checkNumber(number);
	if (winner) {
	n = i + 1;
	}
	}
	//ticket.print();
	}
	cout << "BINGO after " << n << " numbers announced" << endl;
	}
	}