我手算的不能接住输出 $0$

rt

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

int main(){
	int ans = 0;
    double H,S1,V,L,K,n;
    cin >> H >> S1 >> V >> L >> K >> n;
    double H1 = H - K,t = sqrt(H1 / 5.0);
	double x1 = S1 - t * V,x2 = x1 + L; 
	for(int i = n - 1; i >= 0; --i){
		if(i >= x1 && i <= x2){
			ans++;
		}
	}
	cout << ans;
	return 0;
}

求调