Минимальная зарплата

In a small company works a certain number of employees, but not less than two - the director and chief accountant. Knowing the salary of all employees, find the minimal salary in the company.

Input

The workers salaries are given in one line in national currency. All input data are non-negative real numbers, separated by spaces, their number does not exceed 1000.

Output

Print the minimal salary in the company with two digits after the decimal point.

Examples