#D13240. HullMarathon
HullMarathon
HullMarathon
Example
Input
4 5 8 58 85
Output
2970.000000000
inputFormat
Input
4 5 8 58 85
outputFormat
Output
2970.000000000
样例
4
5
8
58
852970.000000000
Example
Input
4 5 8 58 85
Output
2970.000000000
Input
4 5 8 58 85
Output
2970.000000000
4
5
8
58
852970.000000000