python，统计班级平均分

score=[78,65,90,100,50,85,62,70,60,80]
x=int(input())
score.append(x)
sum=0
for i in score:
        sum+=i
avg=sum/11
print("%.1f"%(avg))
score=sorted(score)
score=reversed(score)
for i in score:
        if i>avg:
                print(i)

scores=[78,65,90,100,50,85,62,70,60,80]
#1
scores.append(20)
print(scores)
#2
Total_score=0
for i in scores:
    Total_score+=i
average = Total_score/len(scores)
print("%.1f"%average)
#3
for j in scores:
    if j>average:
        print(j,end=' ')