#include<iostream>
#include<fstream>
#define m 999999999
using namespace std;
fstream fin("p.in");
int rec(int n,int c1,int c2)
{
    int c,a;
    c=n%10;
    if(n==c1)return c2;
    if(n<10)return n;
    if(n>9)
    {
        a=rec(n/10,c1,c2);
    }
    if(c==c1)c=c2;
    return a*10+c;
}
int main()
{
    int x,a,b,d;
    while(cin>>x>>a>>b)
    {
        d=rec(x,a,b);
        if(d)
        {
            cout<<d<<"\n";
        }
    }
}