# コマンドでのデバック用
# import sys
# args = sys.argv
# str = args[1]
# workHead = int(args[2])
# workFoot = int(args[3])


# 本番用
str = input()
aaa = input()
split_first = aaa.split()
workHead = int(split_first[0])
workFoot = int(split_first[1])

if workHead < workFoot:
  head = workHead
  foot = workFoot
else:
  head = workFoot
  foot = workHead

subHead =  str[head:head+1]
subFoot =  str[foot:foot+1]

# コマンドでのデバック用
# print("引数を受け取れているか確認")
# print(head)
# print(subHead)
# print(foot)
# print(subFoot)


if head > 0:
  headStr = str[0:head]
else:
  headStr = ""

# コマンドでのデバック用
# print("headStr")
# print(headStr)

if (foot - head) >1 :
  centStr =  str[head+1:foot]
else:
  centStr =  ""

# コマンドでのデバック用
# print("centStr")
# print(centStr)


if foot <  len(str):
  footStr = str[foot+1:len(str)]
else:
  footStr = ""

# コマンドでのデバック用
# print("footStr")
# print(footStr)

print(headStr +  subFoot+centStr  + subHead+  footStr)


#print(first#)
#leng= (len(first))
#lengheaf= (len(first)//2)
#lengheaf= (leng//2)
#print(lengheaf)

#print("比較開始")
#print(text[0: lengheaf])
#print(text[lengheaf:leng])

#if text[0: lengheaf] == text[lengheaf:leng]:
#if first[0: lengheaf] == first[lengheaf:leng]:
#    print("YES")
#else:
#    print("NO")