Problem 11

Poor Nelson and Carson

There is an old story about two famous train robbers, Nelson and Carson. The wanted poster said that if they were captured there would be a substantial reward.

The sheriff in town thought it would be funny to turn their reward poster into a cyrpto-algorithm. The whole town started working on the problem, even Nelson and Carson.

Nelson visited the Sheriff's office to get a clue, and before he arrested them both he told Carson that N = 5.

While they were in prison, the bailiff helped them solve the puzzle.

$$NELSON +CARSON = REWARD$$