输入: 10个学生的5门课程的成绩
输出: 每一个学生的总成绩和每一个学生的平均成绩
输入样例: 90.5 80 70 89 84.6
91.5 81 71 88 84.7
92.5 82 72 87 84.8
93.5 83 73 86 84.9
94.5 84 74 85 84.0
95.5 85 75 84 84.1
96.5 86 76 83 84.2
97.5 87 77 82 84.3
98.5 88 78 81 84.4
99.5 89 79 80 84.5
输出样例: 414.100006 82.820000
416.200012 83.240005
418.299988 83.659996
420.399994 84.080002
421.500000 84.300003
423.600006 84.720001
425.700012 85.139999
427.799988 85.559998
429.899994 85.979996
432.000000 86.400002