is no problem originally, but the n and m you input here are too large, and the integer overflows, causing i * i to become 0 after overflow, and a division-by-zero exception in the denominator occurs.
1/(i*i) is the division of two integers (in this case, 1/3 is not equal to 0.3333... but equal to 0), I think you need to use 1.0/(i*i) for this. Since i*i may indeed be 0, you'd better judge ahead of time.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
is no problem originally, but the
nandmyou input here are too large, and the integer overflows, causingi * ito become0after overflow, and a division-by-zero exception in the denominator occurs.1/(i*i)is the division of two integers (in this case, 1/3 is not equal to 0.3333... but equal to 0), I think you need to use1.0/(i*i)for this. Sincei*imay indeed be 0, you'd better judge ahead of time.