c start with comments
c
c
p cnf 5 3
1 -5 4 0
-1 5 3 4 0
-3 -4 0

def evalue_clause(C,X):
    L = []
    for element in X:
        for clause in C:
            if clause > 0:
                L.append(element)
            if clause < 0:
                L.append(1)
            else:
                L.append(0)
    for nb in L:
        if nb == 1:
            return 1
    return 0