ICPC 2023 vòng Regional - I: It's Time To D-D-D-D-Duel!

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Points: 1.70
Time limit: 1.0s
Memory limit: 512M
Input: stdin
Output: stdout

Problem source:
ICPC 2023 vòng Regional
Problem types
Allowed languages
C, C++, Go, Java, Kotlin, Pascal, PyPy, Python, Rust, Scratch

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Sample Input 1

5 2
2 4 3 1 5

Sample Output 1

2

Sample Input 2

6 120
1 2 3 4 5 6

Sample Output 2

720

Sample Input 3

6 120
1 2 3 4 6 5

Sample Output 3

0

Sample Input 4

10 15
4 8 5 1 3 10 9 2 7 6

Sample Output 4

465

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