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Plants

UnratedFunction
English

Language

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Time limit
4000 ms
Memory limit
2048 MB
Submissions
0
Correct
0
Solved by
0
AC rate
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Statement

Plants: original English statement, page 1

Plants: original English statement, page 2

Plants: original English statement, page 3

Examples

Sample input 1
4 3 2
0 1 1 2
0 2
1 2
Sample output 1
1
-1
Sample input 2
4 2 2
0 1 0 1
0 3
1 3
Sample output 2
1
0

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Source

This problem accepts only these languages.

C++20