Programmer Group

T1 Uddered but not Herd Topic description A little-known fact is that cows have their own words: "Niu Wen". Niu Wen consists of 26 letters' a 'to' z ', but when the cow speaks Niu Wen, it may be different from the familiar' abcdefghijklmnopqrstuvwxyz '. She will arrange the letters in a certain order. To pass the time, Bessie the cow ...