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