num_students= int(input("How many students are in the class? - "))


while num_students <= 0:
    print("Sorry, that number of students is invalid.")
    num_students= int(input("How many students are in the class? - "))

num_tests= int(input("How many tests were in this class? - "))

while num_tests <= 0:
    print("Sorry, not valid number of tests.")
    num_tests= int(input("How many tests were in this class? - "))

student_score= 0
total_score=0


for student_count in range(num_students):
    print("Student %2d: " % (student_count+1))

    for test_count in range(num_tests):
        grade= float(input("Score on test%2d " %(test_count+1)))


    while grade <=0:
        print("Sorry, invalid input for test grade!")
        grade= float(input("Score on test%2d " %(test_count+1)))

student_score+= grade
total_score+= grade

student_avg= student_score/num_tests
print("Average score for the student %2d = %5.2f"%(student_count+1,student_avg))

total_avg_score= total_score/(num_tests*num_students)
print(total_score)