Time Limit: 1000 MS    Memory Limit: 65536 K 


Description

e is the most beautiful number in the universe! !!YUMEN The natural logarithm, formerly known as the hyperbolic logarithm, is the logarithm to the base e, where e is an irrational constant approximately equal to 2.718281828459. In simple terms, the natural logarithm of a number x is the power to which e would have to be raised to equal x. !!Wikipedia eΠi = -1 !!a famous complex formula Your task is to calculate e, precise to 100 digits after the decimal point.

Input

There is no input.

Output

A single line contains the value of e (2.718281828´), truncated ( not rounded!) to 100 digits after the decimal point.

Sample Input

Sample Output


Source

YUMEN