“8d4af9c50cad4d233ad12e13ad08881d22fc782c”上不存在“data_backup/1.leetcode/1249-移除无效的括号/solution.md”
Fork自 PaddlePaddle / Paddle
Fix the HierarchicalSigmoidGradOpKernel and refine the codes. Now hsigmoid_op is same with V2 implementation and can pass gradient check.