yumao

摘要： A. Old Peykantime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere are n cities in the country where the Old Peykan lives. These cities are located on a straight line, we'll denote them from left to right as c1, c2, ..., cn. The Old Peykan wa 阅读全文