#include<stdio.h>
#include<cstring>
using namespace std;
char s[100];
long c1, c2, i, ls, g;
int main()
{
    while (1)
    {
        scanf("%s %ld %ld",s,&c1,&c2);
        if ((s[0]=='0')&&(c1==0)&&(c2==0)&&(strlen(s)==1))
            break;
        ls=strlen(s); g=0;
        for (i=0;i<ls;i++)
        {
            if ((s[i]-'0'==c1))
            {
                    if ((c2!=0)||(g))
                {
                    printf("%ld",c2);
                    g=1;
                }
            }
            else
                if ((s[i]!='0')||(g))
                {
                    printf("%c",s[i]);
                    g=1;
                }
        }
        if (!g)
            printf("0");
        printf("\n");
    }
    return 0;
}