The Bank Job

You are a group of well-informed thieves. You discovered that the general director of the Central Bank has a stash of diamonds hidden in his office. In the dead of night, you sneaked into the bank and reached the office of the manager's assistant, from there you deactivated the alarm, but it will go off in exactly one hour. If you can reach the diamonds in one hour, you will be richer than you could ever dream, otherwise, you will end your career in prison.