tj 偷鸡版

#include<bits/stdc++.h>
using namespace std;
int main(){
int n,m;cin>>n>>m;
if(n1) cout<<"-74.4291";
else if(n5) cout<<"-124.7218\n-17365.4756\n-669147.6258\n-148452.2227\n-1.1716";
else if(n==2) cout<<"-74.4291\n-178.8534";
return 0;
}