import strutils, sequtils

let
  S = readLine stdin
  ij = map(split readLine stdin, parseInt)
  (i, j) = (ij[0], ij[1])
var
  T = ""

for n, s in S:
  if n == i or n == j:
    add T, S[i + j - n]
  else:
    add T, S[n]

echo T