S Sequence

Source: beecrowd

Version: Phuoc Hung OJ Extended

Problem Statement

Compute $S=1+\frac12+\frac13+\cdots+\frac1{100}$ and print the sum rounded to exactly two digits after the decimal point.

Input

There is no input.

Output

Print the value with exactly two decimal places.

Subtasks

• Subtask 1 (20%): No input; the same empty input is used for scoring groups.

• Subtask 2 (30%): No input; the same empty input is used for scoring groups.

• Subtask 3 (50%): No input; the same empty input is used for scoring groups.

Examples

Example 1

Input:

Output:

5.19

Explanation:

Add the real-valued fractions 1/i for i from 1 through 100, then format to two decimals.