摘要：Quicksum Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 16488 Accepted: 11453 Description A checksum is an algorithm that scans a packet o 阅读全文

摘要：Avoid The Lakes Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 8173 Accepted: 4270 Description Farmer John's farm was flooded in the most 阅读全文

摘要：Central heating Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 614 Accepted: 286 Description Winter has come, but at the Ural State Univer 阅读全文