这个怎么编程 求指导

num = int(input("请输入学生人数："))
score = {}
total = {}
i = 0
while i < num:
    no = input("请输入学号：")
    s = input("请输入成绩（成绩间以空格分割）：")
    s = [int(i) for i in s.split(' ')]
    score[no] = s
    total[no] = sum(s)
    i += 1
print(total)