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A7846 | $Intersection$

时间限制1s

内存限制256MB

通过 / 提交0/0

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.

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

C++ 编辑器

输入

输出