Round to One Decimal Place

Version: Phuoc Hung OJ Extended

Problem Statement

Given a real number $x$, compute Python 3 round(x, 1), rounding the stored float to one decimal place. Print the resulting float using Python’s default representation; do not force exactly one decimal digit. Binary floating-point values near halfway cases can behave differently from ideal decimal arithmetic.

Input

The only line contains a real number $x$.

Output

Print the float returned by round(x, 1) using the default Python 3 display.

Subtasks

• Subtask 1 (100 points): $|x|\le10^{12}$.

Examples

Example 1

Input

3.14159

Output

3.1

Explanation. For input 3.14159, round(x, 1) produces 3.1. The float is printed using its default representation, without padding trailing zeros.

Example 2

Input

2.65

Output

2.6

Explanation. For input 2.65, round(x, 1) produces 2.6. The float is printed using its default representation, without padding trailing zeros.

Example 3

Input

-1.25

Output

-1.2

Explanation. For input -1.25, round(x, 1) produces -1.2. The float is printed using its default representation, without padding trailing zeros.