Board HakerRank

Board.cpp

#include <iostream>
#include <vector>
using namespace std;

int main()
{
	char m;
	int xs, ys,n1,n2,tx,ty,coun=0;
	vector < vector <int> > a;

	cin >> xs >> ys;
	a.resize(xs);
	for (int i = 0; i < xs; i++)
		a[i].resize(ys);
	cin >> n1;
	for (int i = 0; i < n1; i++)
	{
		cin >> tx;
		cin >> m;
		cin >> ty;
		a[tx][ty] = 1;
	}
	cin >> n2;
	for (int i = 0; i < n2; i++)
	{
		cin >> tx;
		cin >> m;
		cin >> ty;
		for (int j = 0; j < ys; j++)
			a[tx][j] = 0;
		for (int j = 0; j < xs; j++)
			a[j][ty] = 0;
	}
	for (int i = 0; i < xs; i++)
	{
	
		for (int j = 0; j < ys; j++)

		{
			if (a[i][j] == 1)
				coun++;
		}
	}
	cout << coun << endl;
	//cin >> coun;
}