HDU2529
水~
但是如果不找出公式的话,而用for(角度),这样会TLE。。。。
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
1 #include<stdio.h> 2 #include<math.h> 3 #include<algorithm> 4 using namespace std; 5 const double pi=3.141592653; 6 int main(){ 7 double x,y,v; 8 while( scanf("%lf%lf%lf",&x,&y,&v)==3,x+y+v ){ 9 double ans=0; 10 /* 11 double a,b,c; 12 a=(-9.8*y*y/2.0/v/v); 13 b=y; 14 c=a; 15 ans=c-b*b/4.0/a; 16 */ 17 ans=0.5*v*v/9.8-9.8*y*y*0.5/v/v; 18 printf("%.2lf\n",ans+x); 19 } 20 return 0; 21 }
h=v*t*sin(i)-0.5*g*t*t //1
l=v*t*cos(i) //2
keep moving...