Problem 52467. Easy Sequences 2: Trigonometric function with integral input and output

Can someone please explain test case 4? I don't see what is going on, as intmax-4 is clearly not 1234567891011.

I could only pass this case by bodging x inside the function, which is clearly unsatisfactory.

intmax - 4 is not equal to 1234567891011. But
F(intmax-4) is equal to F(1234567891011). The given function can have same output for different inputs.

Hi Mark,
Trigonometric functions are naturally periodic. So we can expect same function return from different inputs.