public class Solution {
public int solution(int[][] dots) {
int x1 = dots[0][0], y1 = dots[0][1];
int x2 = dots[1][0], y2 = dots[1][1];
int x3 = dots[2][0], y3 = dots[2][1];
int x4 = dots[3][0], y4 = dots[3][1];
if ((y2-y1)*(x4-x3) == (y4-y3)*(x2-x1)) {
return 1;
}
if ((y3-y1)*(x4-x2) == (y4-y2)*(x3-x1)) {
return 1;
}
if ((y4-y1)*(x3-x2) == (y3-y2)*(x4-x1)) {
return 1;
}
return 0;
}
}