摘要： Time Limit: 1000MSMemory Limit: 10000KTotal Submissions: 10897Accepted: 5594DescriptionWhen a radio station is broadcasting over a very large area, repeaters are used to retransmit the signal so that every receiver has a strong signal. However, the channels used by each repeater must be carefully ch 阅读全文

摘要： Time Limit:2000MSMemory Limit:65536KTotal Submissions:12075Accepted:6026Special JudgeDescriptionSudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure. In some of the cells are written decimal digits from 1 to 9. The other ce 阅读全文