I*A
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for any integer x between 1 to 27
find 3 numbers from (0 ..9) and the sum of them equals x.
the 3 numbers need not be distinct
for instance, 5+5+5=x
find 3 numbers from (0 ..9) and the sum of them equals x.
the 3 numbers need not be distinct
for instance, 5+5+5=x