S = input()
index = list(map(int, input().split()))
i = index[0]
j = index[1]

temp = []
for k in range(0,len(S)):
    temp.append(S[k])

temp[i] = S[j]
temp[j] = S[i]

output=""
for l in range(0,len(temp)):
    output += temp[l]

print(output)