import sequtils,strutils,strscans
var
    L = stdin.readline
    s : string
    a,b : int
    f = scanf(L,"$* $i $i", s, a, b)
    ans = ""
s[a] = '0'
s[b] = '0'
for c in s:
    if c != '0':
        ans &= c
echo ans