Today, due to the military training school, only the brush of a question: 1160
This question is actually tarjan seeking cutting edge of the template title, just adjust the output of the order process is a bit complicated.
AC Code:
Today, due to the military training school, only the brush of a question: 1160
This question is actually tarjan seeking cutting edge of the template title, just adjust the output of the order process is a bit complicated.
AC Code: