超时？

#include<bits/stdc++.h>
using namespace std;
int main(){	
    int k,n;    
    n=1;	
    cin>>k;	
    double s;    
    s=1;	
    while(s<=k){	
    n++;    
    n=1.0/n+n;	
    }	
    cout<<n;	
    return 0;
}