#t155. 计算输出2

计算输出2

Calculation Output 2

Problem Description

Compute the value of the expression 10+20/10×2−510 + 20 / 10 \times 2 - 5 and print the result.

Input Format

This problem has no input.

Output Format

Print one line containing a single real number: the value of the expression, kept to two decimal places.

Hint

  • The result is a fraction and must be shown to two decimal places: you need the format controls from <iomanip> (fixed and setprecision, used before).
  • Warning: the expression contains a division — think about where integer division would happen and whether some value must be written in decimal form.
  • Work it out on paper first, then check your program's output.