Simple puzzle: There is a river and four people (A,B,C,D) are on one side. They all have to move toother side in 17 min. There is a boat with a max capacity of 2. Time taken by each people to travelalone is A=1min, B=2min, C=5min, D=10 min. If two people travel together, the time taken by them tocross is max{individual time}. Find how they travelled