## z:\Chao\src\2769_qujian\test\in.txt 
2020/05/01 周五 21:45:42.33 
1 4
5 10

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Process exited after 130 ms with return value 0

## z:\Chao\src\2769_qujian\test\in2.txt 
2020/05/01 周五 21:45:42.33 
1 1
2 3

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Process exited after 90 ms with return value 0

## z:\Chao\src\2769_qujian\test\in3.txt 
2020/05/01 周五 21:45:42.33 
1 30

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Process exited after 90 ms with return value 0