#include <iostream>

using namespace std;
int nrcif(int x)
{
    int nr=0;
    while(x)
    {
        nr++;
        x=x/10;
    }
    return nr;
}
int v[1000001];
int main()
{
    int n,c1,c2,cn,u,i,k;
    while(n != 0 || c1 != 0 || c2 != 0)
    {
        cin>>n>>c1>>c2;
        i=0,k=0;
        cn=n;
        while(cn)
        {
            i++;
            u=cn%10;
            cn=cn/10;
            if(u==c1)
                u=c2;
                v[i]=u;
        }
        for(i=nrcif(n);i>=1;i--)
        {
            if(v[nrcif(n)]!=0)
                cout<<v[i];
        }
        int nr = nrcif(n);
        for(i=nr;i>=1;i--)
        {
            if(v[nr]==0)
            {
                if(v[i]==0)
                    k++;
            }
        }
        if(v[nrcif(n)]==0)
        {
            for(i=nrcif(n)-k;i>=1;i--)
                cout<<v[i];}
            if(n==c1)
                cout<<c2;
            if(n==0 && c1!=0)
                cout<<n;
        cout<<endl;
    } return 0;

    }