摘要：Recently Luba bought a monitor. Monitor is a rectangular matrix of size n × m. But then she started to notice that some pixels cease to work properly. 阅读全文

摘要：Chladni Figure CodeForces - 1162D Inaka has a disc, the circumference of which is nn units. The circumference is equally divided by nn points numbered 阅读全文

摘要：Problem for Nazar Nazar, a student of the scientific lyceum of the Kingdom of Kremland, is known for his outstanding mathematical abilities. Today a m 阅读全文