Лимит времени 2000/4000/4000/4000 мс. Лимит памяти 65000/65000/65000/65000 Кб.
Question by Ibrahim Mesecan.
Grades Histogram
A professor stores his two
exam results in a file (Midterm and
Final exams). At the end of the semester, first he calculates
student averages: 40% of midterm and 60% of final rounded
to the nearest integer. Then, to be able to analyze exam
results better, he prepares the grade histogram. In his
histogram, he counts the number of grades within 4 grade-ranges:
- Grades between 0 and 49
- Grades between 50 and 69
- Grades between 70 and 84
- Grades between 85 and 100
Question: Write a program that is going to
read grades for n students. And print the grades histogram.
Input specification:
You will be first given an integer (n where n is between 1 and
2000): the number of students. Then, you will be given n lines
of information. Each line contains two integer numbers between
0 and 100 separated by a space.
Output specification:
Show 4 integers: the number of grades in the ranges given above.
| Sample Input |
Sample Output |
6
64 50
82 78
79 86
56 48
95 78
45 59
|
0 3 2 1
|
Explanation:
There are 6 students. So, there is no student in the first range (0-49). There are 3
students in the second range (50-69).
| Student |
Average |
| 1 |
56 |
| 2 |
80 |
| 3 |
83 |
| 4 |
51 |
| 5 |
85 |
| 6 |
53 |
Для отправки решений необходимо выполнить вход.
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