#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <iostream>
#include <ctime>
 
using namespace std;
 
const int N = 1000;
 
int n, t, x[N], y[N];
 
int gcd( int x, int y ) {
	if( x < 0 || y < 0 )
		return gcd( abs(x), abs(y) );
	return y == 0 ? x : gcd( y, x % y );
}
 
int main() {
	freopen("sight.in", "r", stdin);
	freopen("sight.out", "w", stdout);
	for( scanf("%d", &t); t--; ) {
		scanf("%d", &n);
		for( int i = 0; i < n; i ++ ) {
			scanf("%d %d", &x[i], &y[i]);
			int g = gcd(x[i], y[i]);
			x[i] /= g;
			y[i] /= g;
		}
		int result = 0;
		for( int i = 0; i < n; i ++ ) {
			result ++;
			for( int j = i + 1; j < n; j ++ )
				if( x[i] == x[j] && y[i] == y[j] ) {
					result --;
					break;
				}
		}
		cerr << n << " " << result << endl;
		printf("%d\n", result);
	}
	return 0;
}