import Foundation let n = readLine()!.split(separator: " ").map{Int($0)!} var S = String(readLine()!) let (N,K) = (n[0],n[1]) let s = S.index(S.startIndex, offsetBy: K-1) var T = String(S[..<s]) let U = S[s...] if (N - K) % 2 == 0{ T = String(T.reversed()) } print(U + T)