start:
scanf("%d %d %d %d",&a ,&b, &c, &d);
if(a!=b&&a!=c);
else{
printf("Not good, repeat\n");
goto start;
}
if(a!=d&&b!=d);
else{
printf("Not good, repeat\n");
goto start;
}
if(b!=c&&c!=d);
else{
printf("Not good, repeat\n");
goto start;
}