Jan Burse, created Jun 30. 2019
* CLP(FD) code for the modified 7-11 problem.
* A kid goes into a grocery store and buys three items. The cashier
* charges $6.42. The kid pays and is about to leave when the cashier
* calls the kid back, and says "Hold on, I multiplied the three items
* instead of adding them; I'll try again... Gosh, with adding them
* the price still comes to $6.42"! What were the prices of the
* three items?
* Adaptation of a problem from professor Doug Brumbaugh.
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% Picat test:
% import cp
% X = [A,B,C], X :: 0..642, A*B*C #= 6420000, A+B+C #= 642, A #>= B, B #>= C, time((solve(X))).
% CPU time 0.0 seconds.