1.hdu-1847:
Good Luck in CET-4 Everybody!
2.hdu-4557:
非诚勿扰
3.hdu-2095:
find your parent(2)
4.洛谷-1104:
相似基因
5.oj.anstu.cc-contest_B:
火柴拼日期
6.hdu-1078:
Fatmouse and cheese