PROGRAMMING:The importance of keeping a safe social distance
It is very necessary to maintain social distance during COVID-19. CDC experts generally believe that maintaining a distance of more than 1 meters can effectively slow down the spread of the epidemic. Now given the coordinates of some people, please calculate whether they are all safe. If not, how soon can the new coronavirus infect all people. For the convenience of calculation, we use centimeter as the distance unit. When the distance reaches or exceeds 100 cm, we think that it is safe between two people. If the distance D is less than 100 cm, we set that the virus will take D seconds to pass from one person to another.
###Input format:
First input the number of people n, then n lines, in turn input n personal coordinates.
###Output format:
For each group of input, if everyone can keep a safe distance, output "good! All are safe!”， If only one person can keep a safe distance, output "only 1 person is safe!", If two or more people can keep a safe distance, but not all people can keep a safe distance, output "K persons are safe!", K is the number of people, if everyone can not keep a safe distance, then output "warning! All persons are in Danger! Virus will infect everyone in X seconds!”， X is the shortest time it takes for the virus to infect everyone, accurate to two decimal places.
###Input example:
Here is a set of inputs. For example:
```in
two
0 0
1 1
```
###Output example:
The corresponding output is given here. For example:
```out
Warning! All persons are in Danger! Virus will infect everyone in 1.41 seconds!
```
answer：If there is no answer, please comment
###Input format:
First input the number of people n, then n lines, in turn input n personal coordinates.
###Output format:
For each group of input, if everyone can keep a safe distance, output "good! All are safe!”， If only one person can keep a safe distance, output "only 1 person is safe!", If two or more people can keep a safe distance, but not all people can keep a safe distance, output "K persons are safe!", K is the number of people, if everyone can not keep a safe distance, then output "warning! All persons are in Danger! Virus will infect everyone in X seconds!”， X is the shortest time it takes for the virus to infect everyone, accurate to two decimal places.
###Input example:
Here is a set of inputs. For example:
```in
two
0 0
1 1
```
###Output example:
The corresponding output is given here. For example:
```out
Warning! All persons are in Danger! Virus will infect everyone in 1.41 seconds!
```
answer：If there is no answer, please comment