摘要:
A - Ilya and a Colorful Walk CodeForces - 1119A Ilya lives in a beautiful city of Chordalsk. There are nn houses on the street Ilya lives, they are nu 阅读全文
摘要:
A - Diverse Strings CodeForces - 1144A A string is called diverse if it contains consecutive (adjacent) letters of the Latin alphabet and each letter 阅读全文