1025: 划定分数线
内存限制：128 MB
时间限制：1.000 S
评测方式：文本比较
命题人：
提交：50
解决：25
题目描述
先统计每个分数(０－１００分)人数,再将全体学生按成绩划分 ABCDE五个等级,各等级比例如下表所示,每个等级按比例乘以总人数取整,输出各个等级最低分数线.
等级
A等
B等
C等
D等
E等
比例
15%
30%
30%
20%
5%
累计比例
输入
无
输出
等级A最低分数线是95,人数32,占比0.16
等级B最低分数线是82,人数60,占比0.3
等级C最低分数线是64,人数62,占比0.31
等级D最低分数线是53,人数38,占比0.19
等级E最低分数线是50,人数8,占比0.04
等级B最低分数线是82,人数60,占比0.3
等级C最低分数线是64,人数62,占比0.31
等级D最低分数线是53,人数38,占比0.19
等级E最低分数线是50,人数8,占比0.04
样例输入 复制
无样例输出 复制
等级A最低分数线是95,人数32,占比0.16
等级B最低分数线是82,人数60,占比0.3
等级C最低分数线是64,人数62,占比0.31
等级D最低分数线是53,人数38,占比0.19
等级E最低分数线是50,人数8,占比0.04 提示
a=[75,53, 54, 97, 95, 58, 82, 86,87, 70, 90, 98, 71, 55, 85, 82, 95, 68, 78, 54, 98, 64, 85, 99, 64, 64, 100, 93, 72, 58, 67, 89, 59, 89, 53, 93, 68, 86, 99, 76, 68, 84, 87, 67, 94, 95, 62, 54, 66,81, 85, 90, 90, 71, 62, 97, 67, 65, 97, 63, 77, 91, 53, 77, 89, 66, 100, 86, 61, 71, 86, 79, 61, 58, 69, 84, 67, 100, 72, 52, 89, 77, 95, 56, 90, 93, 86, 90, 83, 51, 69, 75, 95, 60, 98, 54, 52, 75,63, 86, 97, 91, 70, 54, 60, 65, 90, 83, 89, 59, 51, 86, 85, 80, 80, 50, 65, 64, 84, 56, 98, 93, 62, 84, 100, 93, 52, 69, 81, 55, 52,
55, 92, 54, 82, 60, 68, 93, 99,71, 85, 86, 83, 67, 73, 54, 87, 94, 96, 82, 97, 79, 95, 54, 82, 98, 94, 77, 59, 70, 94, 63, 68, 100, 68, 84, 55, 73, 67, 86, 66, 97, 64, 62, 97, 64, 94, 64, 71, 99,63, 96, 85, 59, 80, 100, 85, 64,78, 93, 81, 100, 83, 51, 77, 81,69, 88, 58, 96]
#学生成绩存储在列表a中
n=len(a)
b=[0]*101 #存储各分数的人数
c=[0]*102 #存储到某个分数段的总人数
dj=[0.15,0.3,0.3,0.2,0.05] #各等级比例
print('等级'+chr(65+i)+'最低分数线是'+str(j)+',人数'+str(t)+',占比'+str(round(t/n,2)))
55, 92, 54, 82, 60, 68, 93, 99,71, 85, 86, 83, 67, 73, 54, 87, 94, 96, 82, 97, 79, 95, 54, 82, 98, 94, 77, 59, 70, 94, 63, 68, 100, 68, 84, 55, 73, 67, 86, 66, 97, 64, 62, 97, 64, 94, 64, 71, 99,63, 96, 85, 59, 80, 100, 85, 64,78, 93, 81, 100, 83, 51, 77, 81,69, 88, 58, 96]
#学生成绩存储在列表a中
n=len(a)
b=[0]*101 #存储各分数的人数
c=[0]*102 #存储到某个分数段的总人数
dj=[0.15,0.3,0.3,0.2,0.05] #各等级比例
print('等级'+chr(65+i)+'最低分数线是'+str(j)+',人数'+str(t)+',占比'+str(round(t/n,2)))