owenzhu2012's submissions for Is it a Tree?

100 / 100
AC | C++11
owenzhu2012
on Nov. 15, 2018, 7:43 p.m.
0.31s
1.65 MB
100 / 100
AC | C++11
owenzhu2012
on Nov. 15, 2018, 7:42 p.m.
0.32s
1.63 MB