poj 2172 Bricks

<pre >#include<math.h>#include<stdio.h>#include<stdlib.h>struct point {    double x,y,h;}a,b;void Swap(double & a,double & b){    double t;    t=a;    a=b;    b=t;}bool check(double c,double d,double a,double b){    if(a*b<c*d)return false;    if(a<b)Swap(a,b);    if(c<d)Swap(c,d);    if(b<d)return false;    if(a>=c && b>=d)return true;    double dis=sqrt(c*c+d*d);    double p=asin(b/dis);    double q=asin(d/dis);    double sita=p-q;    double Len=c*cos(sita)+d*sin(sita);    if(Len<=a)return true;    return false;}int main(){    scanf("%lf %lf %lf %lf %lf",&a.x,&a.y,&a.h,&b.x,&b.y);    if(check(a.x,a.y,b.x,b.y)||check(a.x,a.h,b.x,b.y)||check(a.y,a.h,b.x,b.y))puts("YES");    else        puts("NO");    return 0;}