S = raw_input()
slist = []
for i in range(0, len(S)):
	slist.append(S[i])
p, q = map(int, raw_input().split())
tmp = slist[p]
slist[p] = slist[q]
slist[q] = tmp
ans = ''
for i in range(0, len(S)):
	ans = ans + S[i]
print ans