Yet another sum

CodeChefOpen on judge ↗

Antonio, who is really fond of mathematical equations stumbled about one during his research. $$F(x)= \left(\frac{n^x}{n^x + \sqrt n}\right)$$ Now, Antonio is interested in finding the value of sum, where the sum is defined as $$n*\sum_{i=1}^{n-1} F(i/n)$$ Help Antonio in finding this value. Since the answer may be large, print it modulo 1000000007 ### Input - First line will contain $T$,

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

🔒

L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI