Given three integer arrays a, b, and c, return the number of triplets (a[i], b[j], c[k]) such that the bitwise XOR sum a[i] ^ b[j] ^ c[k] has an even number of set bits in its binary representation.

Constraints:

• $1 \leq$ a.length, b.length, c.length $\leq 100$

• $0 \leq$ a[i], b[i], c[i] $\leq 100$

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