综合训练——三点共线
Time Limit : 3000/1000ms (Java/Other) Memory Limit : 65535/32768K (Java/Other)
Total Submission(s) : 84 Accepted Submission(s) : 41
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Problem Description
给出平面三个不同点的坐标,判断三点是否共线
Input
输入包含多组数据
每组数据包含6个整数 xa, ya, xb, yb, xc, yc
( -20000 <= xa, ya, xb, yb, xc, yc <= 20000 )
每组数据包含6个整数 xa, ya, xb, yb, xc, yc
( -20000 <= xa, ya, xb, yb, xc, yc <= 20000 )
Output
对于每组数据,如果三点共线,输出YES,否则输出NO
Sample Input
0 0 1 1 2 2 0 0 1 1 1 0
Sample Output
YES NO