好像没怎么快 include<iostream>include<math.h>usingnamespacestd;classSolution{public:doublemyPow(doublex,intn){doubleans=1.0;longlongnn=(longlong)n;if(nn<0){x=1/x;nn=-nn;}while(nn){if(nn&1){ans=x;}x=xx;nn=nn>>1;}returnans;}};intmain(){SolutionSolution1;cout<<Solution1.myP...