ICPC 2023 vòng Regional - K: Kingdom Profit Kerfuffle

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Points: 1.80
Time limit: 2.0s
Memory limit: 512M
Input: stdin
Output: stdout

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

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Sample Input 1

4
2 1 2
1 2 3 8
2 4 3
1 2 6 10
1 2 1 3
2 1 2 7
2 1 0 3
6 8 1
3 6 4 8
1 5 0 6
1 3 0 3
5 4 1 3
6 3 5 10
5 4 5 7
5 6 3 10
4 5 5 8
4 4 5
1 2 4 5
1 2 3 1
2 4 3 3
3 1 9 6

Sample Output 1

6
0
3
-1

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