# a = []
# for i in range (0, 3):
#     nilai = int(input("Masukkan nilai matkul ke "+str(i+1)+" Siswa A : "))
#     a.append(nilai)
# sum1 = 0
# avg1 = 0
# for each in a:
#     sum1 = sum1 + each
#     avg1 = sum1 / len(a)
# b = []
# for i in range (0, 3):
#     nilai = int(input("Masukkan nilai matkul ke "+str(i+1)+" Siswa B : "))
#     b.append(nilai)
# sum2 = 0
# avg2 = 0
# for each in b:
#     sum2 = sum2 + each
#     avg2 = sum2 / len(b)
# c = []
# for i in range (0, 3):
#     nilai = int(input("Masukkan nilai matkul ke "+str(i+1)+" Siswa C : "))
#     c.append(nilai)
# sum3 = 0
# avg3 = 0
# for each in c:
#     sum3 = sum3 + each
#     avg3 = sum3 / len(c)
# nilai= [avg1, avg2, avg3]
# print ("\nRata-rata Nilai A :",avg1)
# print ("Rata-rata Nilai B :",avg2)
# print ("Rata-rata Nilai C :",avg3)
# print ("Nilai tertinggi :",max(nilai))
# print ("Nilai terendah :",min(nilai))

import pandas as pd

amountStudent = input("Masukkan Jumlah Siswa : ")
amountStudent = int(amountStudent)

class Student:
    id_std = ''
    name = ''
    result = None

    def __init__(self, id_std, name, mtk, ipa, ips):
        self.id_std = id_std
        self.name = name
        self.mtk = mtk
        self.ipa = ipa
        self.ips = ips

students = dict()

for i in range(amountStudent):
    counter = i+1

    line_nik = 'NIK Siswa ke-'+ str(counter) + ' : '
    line_name = 'Nama Siswa ke-'+ str(counter) + ' : '
    line_mtk = 'Nilai MTK Siswa ke-'+ str(counter) + ' : '
    line_ipa = 'Nilai IPA Siswa ke-'+ str(counter) + ' : '
    line_ips = 'Nilai IPS Siswa ke-'+ str(counter) + ' : '

    id_std = input(line_nik)
    name = input(line_name)
    mtk = input(line_mtk)
    ipa = input(line_ipa)
    ips = input(line_ips)

    print()

    student = Student(id_std, name, mtk, ipa, ips)
    students.update({int(counter):
                            {'id_std': id_std,
                            'name': name,
                            'mtk': mtk,
                            'ipa': ipa,
                            'ips': ips}
                    })

result_mtk = []
result_ipa = []
result_ips = []

for j in students:
    mtk = students[j]['mtk']
    ipa = students[j]['ipa']
    ips = students[j]['ips']

    avg = (int(mtk) + int(ipa) + int(ips)) / 3

    print("Rata-rata nilai " + students[j]['name'] + ' : ' + str(avg))

    if avg <= 100 and avg >= 80:
        print("Nilai huruf adalah : A")
    elif avg < 80 and avg >= 60:
        print("Nilai huruf adalah : B")
    elif avg < 60 and avg >= 40:
        print("Nilai huruf adalah : C")
    elif avg <= 40:
        print("Nilai huruf adalah : D")
    else:
        print("Salah angka")

    print()

    result_mtk.append(int(students[j]['mtk']))
    result_ipa.append(int(students[j]['ipa']))
    result_ips.append(int(students[j]['ips']))

print(result_mtk)
print(max(result_mtk))
print(min(result_mtk))
print(result_ipa)
print(max(result_ipa))
print(min(result_ipa))
print(result_ips)
print(max(result_ips))
print(min(result_ips))

print("Nilai tertinggi di mata pelajaran MTK :",(max(result_mtk)))
print("Nilai tertinggi di mata pelajaran IPA :",(max(result_ipa)))
print("Nilai tertinggi di mata pelajaran IPS :",(max(result_ips)))
print("Nilai terendah di mata pelajaran MTK :",(min(result_mtk)))
print("Nilai terendah di mata pelajaran IPA :",(min(result_ipa)))
print("Nilai terendah di mata pelajaran IPS :",(min(result_ips)))