3 ms·You can use binary search to find the pin. Unless two or more pins are used.by cjbgkagh 4y agoYou can use binary search to find the pin. Unless two or more pins are used.monocasa 4y agoAt that point it's easier just to run new line.cjbgkagh 4y agoBut you don’t know that when you start. You could assume it and never try to repaid and always replace but in WWII there were not as many options.