摘要:
242 - Stamps and Envelope SizeTime limit: 3.000 secondsStamps and Envelope SizePhilatelists have collected stamps since long before postal workers wer... 阅读全文
摘要:
1629 - Cake slicingTime limit: 3.000 secondsA rectangular cake with a grid ofm*nunit squares on its top needs to be sliced into pieces. Several cherri... 阅读全文
摘要:
1631 LockerA password locker with N digits, each digit can be rotated to 0-9 circularly.You can rotate 1-3 consecutive digits up or down in one step.F... 阅读全文