A7846. Intersection
编程题
普及/提高-
知识点
题目描述
You are given two set of points. The first set is determined by the equation $A_{1}x+B_{1}y+C_{1}=0$ , and the second one is determined by the equation $A_{2}x+B_{2}y+C_{2}=0$ .
Write the program which finds the number of points in the intersection of two given sets.
Write the program which finds the number of points in the intersection of two given sets.
输入格式
The first line of the input contains three integer numbers $A_{1},B_{1},C_{1}$ separated by space. The second line contains three integer numbers $A_{2},B_{2},C_{2}$ separated by space. All the numbers are between -100 and 100, inclusive.
输出格式
Print the number of points in the intersection or -1 if there are infinite number of points.
输入输出样例
输入 #1
1 1 0 2 2 0
输出 #1
-1
输入 #2
1 1 0 2 -2 0
输出 #2
1