NewHint#4 shouldn't appear in issue #1031

[pefontana]

NewHint#4 shouldn't appear in issue #1031

%{
def split(num: int, num_bits_shift: int, length: int):
    a = []
    for _ in range(length):
        a.append( num & ((1 << num_bits_shift) - 1) )
        num = num >> num_bits_shift
    return tuple(a)

def pack(z, num_bits_shift: int) -> int:
    limbs = (z.d0, z.d1, z.d2)
    return sum(limb << (num_bits_shift * i) for i, limb in enumerate(limbs))

a = pack(ids.a, num_bits_shift = 128)
b = pack(ids.b, num_bits_shift = 128)
p = pack(ids.p, num_bits_shift = 128)

res = (a - b) % p


res_split = split(res, num_bits_shift=128, length=3)

ids.res.d0 = res_split[0]
ids.res.d1 = res_split[1]
ids.res.d2 = res_split[2]
%}

This can happen because:

• The hint is duplicated with minor string differences in the whitelisted hint list. If this is the case, handle this string match in the cairo-rs HintProcessor.
• We use a different string from the one in the whitelisted hint list. If this is the case, fix the string match.