#PCBBAY0000008. Kiểm tra gần 0 theo epsilon (Near-Zero Comparison)

Kiểm tra gần 0 theo epsilon (Near-Zero Comparison)

Near-Zero Comparison

Version: Phuoc Hung OJ Extended

Problem Statement

Given a real number xx and a nonnegative absolute tolerance epseps, decide whether xx is close to zero by testing ∣x∣≤eps|x|\le eps. This is the result of Python 3 math.isclose(x, 0.0, rel_tol=0.0, abs_tol=eps).

Input

The only line contains real number xx and absolute tolerance epseps, in that order.

Output

Print exactly True if ∣x∣≤eps|x|\le eps, otherwise False.

Subtasks

  • Subtask 1 (100 points): x,epsx,eps are finite and eps≥0eps\ge0.

Examples

Example 1

Input

1e-10 1e-09

Output

True

Explanation. The computed difference is approximately 1e-10 and the permitted tolerance is 1e-09. The difference is ≤ the tolerance, so the answer is True.

Example 2

Input

1e-06 1e-09

Output

False

Explanation. The computed difference is approximately 1e-06 and the permitted tolerance is 1e-09. The difference is > the tolerance, so the answer is False.

Example 3

Input

0 1e-12

Output

True

Explanation. The computed difference is approximately 0 and the permitted tolerance is 1e-12. The difference is ≤ the tolerance, so the answer is True.