Calculating the area of a triangle using vertex coordinates

Go Medium math

Task «Calculating the area of a triangle using vertex coordinates»

Write a Go program that calculates the area of a triangle given the coordinates of its three vertices on a plane. The input consists of six integers (x1, y1, x2, y2, x3, y3), each ranging from -1000 to 1000. The program should output the area of the triangle with an accuracy of two decimal places. It is guaranteed that the triangle is non-degenerate.

Input Format

Six integers separated by spaces: x1 y1 x2 y2 x3 y3

Output Format

One real number — the area of the triangle, rounded to two decimal places.

Examples

Example 1

INPUT

1

OUTPUT

В обработке

Example 2

INPUT

((a2)2b)2

OUTPUT

((a{2}){2}b){2}

Example 3

INPUT

2

OUTPUT

Отправлен

Example 4

INPUT

0 0 0 5 5 0

OUTPUT

12.50

Example 5

INPUT

0 0
3 4

OUTPUT

5.00

main.go