array [1..6] of int: coins = [50, 25, 10, 5, 2, 1]; array [1..6] of int: prio = [1, 2, 3, 4, 5, 6]; var int: INT____00001 :: is_defined_var :: var_is_introduced; var int: num_used_coins :: output_var = INT____00001; array [1..6] of var int: x :: output_array([1..6]); constraint int_le(0, x[1]); constraint int_le(0, x[2]); constraint int_le(0, x[3]); constraint int_le(0, x[4]); constraint int_le(0, x[5]); constraint int_le(0, x[6]); constraint int_lin_eq([50, 25, 10, 5, 2, 1], [x[1], x[2], x[3], x[4], x[5], x[6]], 29); constraint int_lin_eq([-1, 1, 1, 1, 1, 1, 1], [INT____00001, x[1], x[2], x[3], x[4], x[5], x[6]], 0) :: defines_var(INT____00001); solve minimize INT____00001;