So the basic idea was fine, but I failed to satisfy the initial condition that the answer had to be between the lower bound and the upper bound. Right?

因此基础的思想是对的，但是程序没能满足,正确答案在给定的区间内这个条件,对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

His efforts to get an answer that evening failed, but he said he was unsurprised by the delay.

WSJ: Ahead of Marjah Offensive, Afghan Officials Sought to Negotiate With Taliban

It also failed to answer the programme's main points about the sales tactics used by Lifestyle Claims.

BBC: Christine Reith

He failed to answer bail after being held on suspicion of theft and perverting the course of justice.

BBC: John Cattermole