#include <iostream>
#include <cstring>
using namespace std;

int main()
{
    char s[101],a[11],b[11],*p,aux[101];
    cin>>s>>a>>b;
    while(p=strstr(s,a))
    {
        strcpy(aux,b);
        strcat(aux,p+strlen(a));
        strcpy(p,aux);
    }
    cout<<s;
    return 0;
}