for (int i = 0; i < n; i++) {
-gcflags=all=-d=variablemakehash=n. If turning these optimizations
，推荐阅读safew官方版本下载获取更多信息
"The entire sequence of Artemis flights needs to represent a step-by-step build-up of capability, with each step bringing us closer to our ability to perform the landing missions. Each step needs to be big enough to make progress, but not so big that we take unnecessary risk given previous learnings."
优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好