e5f4633c39
which included commits to RCS files with non-trunk default branches. git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@5 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
102 lines
3.3 KiB
Plaintext
102 lines
3.3 KiB
Plaintext
|
|
/*
|
|
**********************************************************************
|
|
*
|
|
* CLP(R) Version 2.0 (Example Programs Release)
|
|
* (C) Copyright, March 1986, Monash University
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
|
|
%
|
|
% Crypto-arithmetic puzzle:
|
|
% Need to assign integers from 0 to 9 to the letters S, E, N, D, M, O, R, Y
|
|
% without duplicates such that the equation
|
|
%
|
|
% S E N D
|
|
% + M O R E
|
|
% ---------
|
|
% M O N E Y
|
|
%
|
|
% is satisfied.
|
|
%
|
|
|
|
p(S, E, N, D, M, O, R, Y) :-
|
|
S > 0, E >= 0, N >= 0, D >= 0, M > 0, O >= 0, R >= 0, Y >= 0,
|
|
S <= 9, E <= 9, N <= 9, D <= 9, M <= 9, O <= 9, R <= 9, Y <= 9,
|
|
D + E = Y + 10*C1,
|
|
C1 + N + R = E + 10*C2,
|
|
C2 + E + O = N + 10*C3,
|
|
C3 + S + M = O + 10*M,
|
|
carry(C1, C2, C3),
|
|
dig(S), dig(E), dig(N), dig(D), dig(M), dig(O), dig(R), dig(Y),
|
|
printf("S = %d, E = %d, N = %d, D = %d, M = %d, O = %d, R = %d, Y = %d \n",[S, E, N, D, M, O, R, Y]),
|
|
difflist([S, E, N, D, M, O, R, Y]).
|
|
|
|
carry(1, 1, 1).
|
|
carry(1, 1, 0).
|
|
carry(1, 0, 1).
|
|
carry(1, 0, 0).
|
|
carry(0, 1, 1).
|
|
carry(0, 1, 0).
|
|
carry(0, 0, 1).
|
|
carry(0, 0, 0).
|
|
|
|
dig(9).
|
|
dig(8).
|
|
dig(7).
|
|
dig(6).
|
|
dig(5).
|
|
dig(4).
|
|
dig(3).
|
|
dig(2).
|
|
dig(1).
|
|
dig(0).
|
|
|
|
difflist([X | T]) :- notmem(X, T), difflist(T).
|
|
difflist([]).
|
|
|
|
notmem(X, [Y | Z]) :- X < Y, notmem(X, Z).
|
|
notmem(X, [Y | Z]) :- X > Y, notmem(X, Z).
|
|
notmem(X, []).
|
|
|
|
/**************************************************************/
|
|
/*** S = 9, E = 5, N = 6, D = 7, M = 1, O = 0, R = 8, Y = 2 ***/
|
|
/**************************************************************/
|
|
|
|
go:-
|
|
p(S, E, N, D, M, O, R, Y),
|
|
printf("\nAns:\n",[]),
|
|
printf("S = %d, E = %d, N = %d, D = %d, M = %d, O = %d, R = %d, Y = %d \n",[S, E, N, D, M, O, R, Y]).
|
|
|
|
% Output:
|
|
% S = 9, E = 8, N = 9, D = 9, M = 1, O = 0, R = 8, Y = 7
|
|
% S = 9, E = 8, N = 9, D = 8, M = 1, O = 0, R = 8, Y = 6
|
|
% S = 9, E = 8, N = 9, D = 7, M = 1, O = 0, R = 8, Y = 5
|
|
% S = 9, E = 8, N = 9, D = 6, M = 1, O = 0, R = 8, Y = 4
|
|
% S = 9, E = 8, N = 9, D = 5, M = 1, O = 0, R = 8, Y = 3
|
|
% S = 9, E = 8, N = 9, D = 4, M = 1, O = 0, R = 8, Y = 2
|
|
% S = 9, E = 8, N = 9, D = 3, M = 1, O = 0, R = 8, Y = 1
|
|
% S = 9, E = 8, N = 9, D = 2, M = 1, O = 0, R = 8, Y = 0
|
|
% S = 9, E = 7, N = 8, D = 9, M = 1, O = 0, R = 8, Y = 6
|
|
% S = 9, E = 7, N = 8, D = 8, M = 1, O = 0, R = 8, Y = 5
|
|
% S = 9, E = 7, N = 8, D = 7, M = 1, O = 0, R = 8, Y = 4
|
|
% S = 9, E = 7, N = 8, D = 6, M = 1, O = 0, R = 8, Y = 3
|
|
% S = 9, E = 7, N = 8, D = 5, M = 1, O = 0, R = 8, Y = 2
|
|
% S = 9, E = 7, N = 8, D = 4, M = 1, O = 0, R = 8, Y = 1
|
|
% S = 9, E = 7, N = 8, D = 3, M = 1, O = 0, R = 8, Y = 0
|
|
% S = 9, E = 6, N = 7, D = 9, M = 1, O = 0, R = 8, Y = 5
|
|
% S = 9, E = 6, N = 7, D = 8, M = 1, O = 0, R = 8, Y = 4
|
|
% S = 9, E = 6, N = 7, D = 7, M = 1, O = 0, R = 8, Y = 3
|
|
% S = 9, E = 6, N = 7, D = 6, M = 1, O = 0, R = 8, Y = 2
|
|
% S = 9, E = 6, N = 7, D = 5, M = 1, O = 0, R = 8, Y = 1
|
|
% S = 9, E = 6, N = 7, D = 4, M = 1, O = 0, R = 8, Y = 0
|
|
% S = 9, E = 5, N = 6, D = 9, M = 1, O = 0, R = 8, Y = 4
|
|
% S = 9, E = 5, N = 6, D = 8, M = 1, O = 0, R = 8, Y = 3
|
|
% S = 9, E = 5, N = 6, D = 7, M = 1, O = 0, R = 8, Y = 2
|
|
%
|
|
% Ans:
|
|
% S = 9, E = 5, N = 6, D = 7, M = 1, O = 0, R = 8, Y = 2
|
|
|
|
?- printf("\n>>> Sample goal: go/0\n", []).
|