Submission #82681

#	Time	Username	Problem	Language	Result	Execution time	Memory
82681		heon	Pareto (COCI17_pareto)	C++11	30 / 80	78 ms	1872 KiB

pareto

#include<bits/stdc++.h>

using namespace std;

int main(){
	
	int n;
	scanf("%d", &n);
	vector <int> v(n);
	int sum = 0;
	for(int i = 0; i < n; i++){
		scanf("%d", &v[i]);
		sum += v[i];
	}
	sort(v.rbegin(), v.rend());
	int curr = 0;
	double a, b;
	double mx = -1.0, solb, sola;
	for(int i = 0; i < n; i++){
		curr += v[i];
		a = (double) (i+1) / n;
		b = (double) curr / sum;
		if(b - a > mx){
			solb = b, sola = a;
			mx = b - a;
		}
	}
	cout << fixed << setprecision(15) << sola * 100 << "\n";
	cout << fixed << setprecision(15) << solb * 100;
}

Compilation message (stderr)

pareto.cpp: In function 'int main()':
pareto.cpp:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
pareto.cpp:12:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &v[i]);
   ~~~~~^~~~~~~~~~~~~
pareto.cpp:28:46: warning: 'sola' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout << fixed << setprecision(15) << sola * 100 << "\n";
                                              ^~~
pareto.cpp:29:46: warning: 'solb' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout << fixed << setprecision(15) << solb * 100;
                                              ^~~

• Subtask 1: 30 / 80