Subway lines 1, 2, 3 and 4 have been put into operation in a city, and the time required for each station to run and stop is the same  Xiao Zhang, Xiao Wang and Xiao Li are employees of the same unit, which is near beikou subway station  One morning, 3 people all take line 1 to go to work in Evergreen station at the same time, but 3 people have different ideas about the bus route  It is known that :(1) if line 1 is crowded, xiao zhang will take line 2, then transfer to line 3, and then take 3 stops to beikou station; If line 1 is not crowded, Xiao Zhang can take line 2 after three stops, and then four stops to Beikou Station  (2) Only when Line 1 was crowded, xiao Wang took 2 stops, then transferred to Line 3, and took 3 stops to Beikou Station  (3) If line 1 is not crowded, Xiao Li can take line 4 after four stops, then transfer to Line 4 after three stops, then transfer to Line 3 after three stops, and take line 1 to Beikou Station
Xiao Zhang and Xiao Wang arrived at the same time.
 The Subway line 1 was not crowded this morning