Submission #633587

#	Time	Username	Problem	Language	Result	Execution time	Memory
633587		inksamurai	Pareto (COCI17_pareto)	C++17	0 / 80	43 ms	2644 KiB

pareto

#include <bits/stdc++.h>
#define int ll
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3PGDklf ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e

signed main(){
_3PGDklf;
	int n;
	cin>>n;
	vi a(n);
	rep(i,n){
		cin>>a[i];
	}
	int s=0;
	rep(i,n){
		s+=a[i];
	}
	sort(a.begin(), a.end());
	using ld=long double;
	ld now=0;
	ld ma=0,optl=0;
	per(i,n){
		now+=a[i];
		ld l=(ld)(n-i)/(ld)(n);
		ld r=(ld)(now)/(ld)(s);
		if(r-l>ma){
			ma=r-l;
			optl=l;
		}
	}
	cout<<fixed<<setprecision(6);
	cout<<optl<<"\n"<<ma+optl<<"\n";
}

• Subtask 1: 0 / 80