PROGRAMMING:Statistics average and fail
Enter the integer n, and then enter the student number, name and grade of n students. The final output of the total score, average score and the number of failed（ Use structure)
###Input format:
Integer n (n < 100)
Information of n students, one student per line, including: student number (integer), name (no more than 20 characters, no space in the middle), grade (real number)
###Output format:
Total average number of failing grades
2 decimal places
###Input example:
Here is a set of inputs. For example:
```in
five
1001 YaolinPan 89
1002 YuhangGao 98.9
1003 JunyuanGao 42.5
1004 HongpengYang 72
1005 YuxuanHan 35
```
###Output example:
The corresponding output is given here. For example:
```out
337.40 67.48 2
```
answer：If there is no answer, please comment
###Input format:
Integer n (n < 100)
Information of n students, one student per line, including: student number (integer), name (no more than 20 characters, no space in the middle), grade (real number)
###Output format:
Total average number of failing grades
2 decimal places
###Input example:
Here is a set of inputs. For example:
```in
five
1001 YaolinPan 89
1002 YuhangGao 98.9
1003 JunyuanGao 42.5
1004 HongpengYang 72
1005 YuxuanHan 35
```
###Output example:
The corresponding output is given here. For example:
```out
337.40 67.48 2
```
answer：If there is no answer, please comment