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Problems

Maximum Salary

Maximum Salary

Time limit 1 second
Memory limit 64 MiB

Small business operates oprelennoe number of employees, but not less than two - the director and chief accountant. Knowing the salary of all employees, to determine the highest salary in the enterprise.

Input data

In a single line through the gap given the wages of workers in national currency. All input data - non-negative real numbers, separated by spaces, their number does not exceed 1000.

Output data

The only number - the answer to the problem, derived from two digits after the decimal point.

Examples

Input example #1
1000.00 760.00
Output example #1
1000.00
Source II этап Всеукраинской олимпиады школьников 2008-2009, г. Бердичев