For fun I was going to test this here and reached a limit
a=: 1e6 ?@$ 0
b=: 1e6 ?@$ 0
c=: 1e6 ?@$ 2
10 ts 'c}b,:a' NB. ben0
0.0874738 4.19441e7
10 ts 'c,&.>i.#c{b,:a'
|limit error: ts
| c,&.>i.#c {b,:a
It did work with the initial problem
a=: 10 20 30
b=: 1 2 3
c=: 1 0 1
10 ts 'c,&.>i.#c{b,:a'
9.0654e_6 3904
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