Harmonic numbers (2)

Write a program that reads pairs of numbers $n$ and $m$ with $n \ge m$, and for each pair prints $H_n - H_m$.

Input

Input consists of several pairs of natural numbers $n$ and $m$ such that $n \ge m$.

Output

For every pair, print $H_n - H_m$ with 10 digits after the decimal point.

Problem information

Author: Unknown
Translator: Salvador Roura

Generation: 2026-01-25T11:29:58.701Z

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