Serginho crossing the bridge
Serginho Trickster had to cross a bridge every day to date Roberleia. One day there was a policeman halfway across the bridge, not letting anyone cross. Whenever the cop saw someone trying to cross, he would send the person back.
Serginho noticed that the policeman slept a minute and stayed awake another. Knowing that it took two minutes to cross the bridge, as Serginho did to cross it?* challenge submitted by user Diego Cavalcante de Sousa.