两行流

我的代码（有亿点长）：

#include<bits/stdc++.h>
using namespace std;double get(double a,double b,double c,double d){return ceil((a+ b+c)/d);}int main(){double x,y,z;cin>>x>>y>>z;cout<<get(get(x,y,z,3),get(3*x,5*y,7*z,4),get(11*x,13*y,17*z,5),7);}