Please clarify this point:

Assume all penguins swim at the same speed.

to this:

Assume all penguins swim at the same speed, when swimming through the same kind of water (waves or smooth water).

My bad.
I miss-intepreted the instruction "Assume all penguins swim at the same speed." as saying that their speed is constant.

calculatewinners("|-----------~~~----------p~~~~~~|\n
                  |-------------------p-----------|\n
                  |------p----------~-------------|\n
                  |---------------~------p--------|\n
                  |------------p-~~~~~~-----------|", 
                  ["Adam", "Brain", "Flipper", "Franko", "Darwin"]) 
                  --> "GOLD: Franko, SILVER: Brain, BRONZE: Adam"

The test is ok:

Waves (~) take twice as long to swim through as smooth water (-).

It takes Adam 12 time units to reach the finish line, and for Brain only 11.

Hi correct me if I'm wrong but for

calculatewinners("|-----------~~~----------p~~~~~~|\n|-------------------p-----------|\n|------p----------~-------------|\n|---------------~------p--------|\n|------------p-~~~~~~-----------|", ["Adam", "Brain", "Flipper", "Franko", "Darwin"]) --> "GOLD: Franko, SILVER: Brain, BRONZE: Adam"

It marks my answer as wrong and gives the following output

	Expected: "GOLD: Franko, SILVER: Brain, BRONZE: Adam"
	Occurred: "GOLD: Franko, SILVER: Adam, BRONZE: Brain"

When clearly Adam would finish faster than Brain