题解

#include<iostream>
#include<cmath>
using namespace std;

const double epsilon=0.0001;
double h,s,v,l,k;
int n,ans;
int main(){
	int cnt=0;
	double a,b,c,d;
	cin>>h>>s>>v>>l>>k>>n;
	for(int i=0;i<n;i++){
		a=(s-i-epsilon)/v,b=(s-i+l+epsilon)/v;
		c=sqrt((h-k)/5.0),d=sqrt(h/5.0);
		if((c<=a&&a<=d)||(c<=b&&b<=d)||(a<=c&&c<=b)||(a<=d&&d<=b))
			cnt++;
	}
	cout<<cnt;
	return 0;
}