a = input()
x, y = map( int, input().split() )
b = len(a)
if(x>y):
 m = x
 n = y
else:
 n = x
 m = y
if(m == n):
  c = a
else:
  c = a[0:n]+ a[m:m+1]+ a[n+1:m]+ a[n:n+1] +a[m+1:b]
print(c)