Problem Name Time Limit
A - Reverse a Road 3s
B - Expected Difference [Very Special Judge] 1s
C - Prime Switch [Very Special Judge] 1s
D - Tree Similarity 1s
E - Green Energy 3s

Contest is over.
programmer: 劉邦鋒 pangfeng, 上官林傑 ericsk, 陳映睿 springgod, 王尹 cindylinz, 蕭俊宏 chhsiao.
Imager: 江昌鴻 senkousha.
modified by: 高紹航 denehs, 沈定 beephoenix, 馮俊菘 csferng, 黃上恩 tmt514