Processing math: 16%

Problem #171

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g(x) = 2^{2x^3} - 1

f(x)=\sum_{i=1}^x g(\lfloor\frac xi\rfloor)

F(x)= \sum_{i=1}^x f(i)

Find F(12345678) mod 10^9 +7

Contributed by Devanshu Agarwal

Solved by 23 users

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