摘要： Problem V | limit 4 secondsGearsA set of gears is installed on the plane. You are given the center coordinate and radius of eachgear. For a given inpu 阅读全文

摘要： 大数 判断整除 阅读全文

摘要： C. Arthur and Table time limit per test 1 second time limit per test memory limit per test 256 megabytes memory limit per test input standard input in 阅读全文