题解 | 班级成绩输入输出

while True:
    try:
        l = list(map(float, input().split()))
        s = 0
        for i in l:
            s = s + i
        l.append(s)
        l = list(map(str,l))
        print(' '.join(map(str, l)))  
    except EOFError:
        break