Problem #98: River Problem II
This time the man reached the river with a fox, a duck, and a bag of corn,
but this fox ate corn as well as ducks! There was the same boat as before in
which he could take only one of the three with him. He could not leave the
fox with either the corn or the duck, and of course, the duck would gladly eat
the corn if they were left together. How did he get all three across?