37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
#include<iostream>
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#include<iomanip>
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using namespace std;
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double max(double a,double b,double c){
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if(b>a) a=b;
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if(c>a) a=c;
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return a;
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}
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double min(double a,double b,double c){
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if(b<a) a=b;
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if(c<a) a=c;
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return a;
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}
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int main(){
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const double vsm=5.9;
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const double vsh=719.0/120;
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const double vmh=11.0/120;
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const double tsm=3600.0/59;
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const double tsh=43200.0/719;
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const double tmh=43200.0/11;
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double d,t,start,end;
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while(cin>>d,d!=-1){
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t=0;
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for(int i=0;i<11;i++){
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for(int j=(int)((tmh*i+d/vmh-d/vsm)/tsm);j<=(int)((tmh*(i+1)-d/vmh-d/vsm)/tsm);j++){
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for(int k=(int)((tsm*j+d/vsm-d/vsh)/tsh);k<=(int)((tsm*(j+1)-d/vsm-d/vsh)/tsh);k++){
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start=max(tsh*k+d/vsh,tsm*j+d/vsm,tmh*i+d/vmh);
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end=min(tsh*(k+1)-d/vsh,tsm*(j+1)-d/vsm,tmh*(i+1)-d/vmh);
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if(start<end) t+=end-start;
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}
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}
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}
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cout<<fixed<<setprecision(3)<<t/432<<endl;
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}
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return 0;
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}
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