def replaceFc(n, c1, c2):
    nNew = 0
    p = 1
    while(n!=0):
        cAux = n%10
        if(cAux == c1):
            cAux = c2
        n = n/10
        nNew = p*cAux + nNew
        p = p * 10
    return nNew
        
        

row = raw_input().split(' ')

while not(int(row[0])==0 and int(row[1])==0 and int(row[2])==0):
    print replaceFc(int(row[0]), int(row[1]), int(row[2]))
    row = raw_input().split(' ')