#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("text.txt");
ofstream fout("textout.out");
int n,c1,c2,i,j,nr,nrnou,cif,a[100],ok;

int main()
{
    while(fin>>n)
    {
        fin>>c1;
        fin>>c2;

        while(n!=0)
        {
            cif=n%10;
            if(cif==c1)
                cif=c2;
            a[i]=cif;
            i++;
            n=n/10;
        }
        ok=0;
        for(j=i-1;j>=0;j--)
            if(a[j]!=0&&ok==0)
            {
                nrnou=nrnou*10+a[j];
                ok=1;
            }

        fout<<nrnou<<'\n';
        nrnou=0;
        i=0;
    }




    return 0;
}