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Time Limit: 1 s
Memory Limit: 512 MB
Total points: 100
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# 4690. 社交网络
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Statement
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Custom Test
The problem was used in the following contest:
2018 重庆代表队选拔赛（CQTSC 2018）Day 1
Source code:answer
Language
C 99
C 11
C++ 98
C++ 11
C++ 14
C++ 17
C++ 20
C++ 23
C++ 26
D
Go
Haskell
Java 8
Java 11
Java 17
Java 21
Kotlin
Pascal
Python 3
Rust
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Source code:answer
Language
C 99
C 11
C++ 98
C++ 11
C++ 14
C++ 17
C++ 20
C++ 23
C++ 26
D
Go
Haskell
Java 8
Java 11
Java 17
Java 21
Kotlin
Pascal
Python 3
Rust
Upload by editor
Upload from local
use advanced editor
Browse
Text file:input.txt
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use advanced editor
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Run