{"name":"gist: 834969","desc":"Prolog : Project Euler 20-29","actor":"Koitaro","url":"https://gist.github.com/834969","snippet":":- use_module(library(digits),[i2d/2]).\n\nproblem20(Answer) :- numlist(1,100,L), product(L,N), i2d(N,L1), sumlist(L1,Answer).","actor_gravatar":"f980acc10ac75581e3e44d2e1a485657","action":"update"}