#include<stdio.h>
#include<stdlib.h>
#include<string.h>

using namespace std;

int main(void){
        int terminat = 0;
        while(!terminat)
        {
            char c1, c2, n[100], *ch;
            scanf("%s %c %c ", n, &c1, &c2);
            if(n[0] == '0' && n[1] == 0 && c1 == '0' && c2 == '0') terminat = 1;
            else
            {
                for (int i = 0 ; i < strlen(n) ; i++)
                    if(n[i] == c1) n[i] = c2;
                printf("%d\n", atoi(n));
            }
    }
    return 0;
}