#657. C++-初识C++-设置变量a=5.5,b=6.7,c=9.3, 输出式子(-b+4ac)/(4a)的值

C++-初识C++-设置变量a=5.5,b=6.7,c=9.3, 输出式子(-b+4ac)/(4a)的值

Background

Description

image

Format

Input

Output

Samples


8.99545

Limitation

1s, 1024KiB for each test case.