Given a & b(where(1<=a,b<=20), find sum of all integers whose digit sum is exactly $$$a^{b}$$$.
Return sum%10^9+7
Update: Sorry I missed one thing. The sum of all numbers whose each digit is non-zero.
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drifter_kabir | 2020-09-04 10:59:03 | 90 | ||
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drifter_kabir | 2020-09-04 03:02:00 | 124 | Initial revision (published) |
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