#include <cstdio>

using namespace std;
int v[100000],k;
int main()
{
    int n=1,c1,c2,i,x,j;
    while(n>=0)
    {
        k=1;
        scanf("%d%d%d",&n,&c1,&c2);
        x=n;
        if(n==0 && c1==0 && c2==0)
            return 0;
        if(n==c1)
            printf("%d",c2);
        while(x>0)
        {
            v[k]=x%10;
            k++;
            x=x/10;
        }
        j=k-1;
        for(i=k-1; i>=1; i--)
            if(v[i]>-1)
            {
                if(v[i]==c1)
                    v[i]=c2;
            }
        while(v[j]==0)
        {
            v[j]=-1;
            j--;
        }
        for(i=k-1; i>=1; i--)
            if(v[i]>-1)
                printf("%d",v[i]);
        printf("\n");
    }
}