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