VO 20 Bài 6 - Sữa tươi trân châu đường hổ 2

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Points: 1.50 (partial)
Time limit: 1.0s
Memory limit: 256M
Input: stdin
Output: stdout

Problem type
Allowed languages
C, C++, Java, Kotlin, Pascal, PyPy, Python, Scratch

Đọc đề ở: https://drive.google.com/file/d/1QWuHH0DjdFhvHHFiI0ZV5E-HCv6MQm9a/view

Sample Input 1

3 100
0 7
-4 2
-9 20

Sample Output 1

0
15 21
15 21
15 21

Sample Input 2

4 4
1 4
2 3
3 2
4 1

Sample Output 2

8
2 3
2 3
3 2
3 2

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