import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {
int zestawy
= Integer.
parseInt(linia
); int x, y, x1, y1, x2, y2;
while (zestawy > 0) {
linia = br.readLine();
String[] tab
= linia.
trim().
split("\\s+");
if ((x1 - x) * (y2 - y) == (y1 - y) * (x2 -x))
else
zestawy--;
}
}
}
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