#include <iostream>
#include<cstdio>
#include<cstring>
#include<cstdlib>
using namespace std;
int cifre[10],dim;
int n,c1,c2;
int main()
{
    freopen("date.in","r",stdin);
    //freopen("date.out","w",stdout);

scanf("%d %d %d",&n,&c1,&c2);

while( n!=0 || c1!=0 || c2!=0  )
{
    dim=0;
    if(n<10){ if(n==c1)printf("%d\n",c2); scanf("%d %d %d",&n,&c1,&c2);  }
    else{
    while(n>0){ dim++; cifre[dim]=n%10; n=n/10;    }
    for(int i=1; i<=dim; i++)if(cifre[i]==c1)cifre[i]=c2;

    int au=dim; while(cifre[au]==0)au--;
    if(au>=1)
    for(int i=au; i>=1; i--)printf("%d",cifre[i]);
    else printf("0");

    printf("\n");
    scanf("%d %d %d",&n,&c1,&c2);
    }
}



    return 0;
}