You're given N points on the plane. Find the minimum radius of a circle, which can cover all of them Input data format specification: First line contains a single integer number: number of points on the plane N. Then N lines follow, each contains two floating point numbers: X and Y coordinates of the corresponding point. Output data format specification: Print the smallest radius of a circle which can cover all the points with exactly three digits after a decimal point. Sample input: 4 0 0 0 1 1 0 1 1 Sample output: 0.707