제출 #878643

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
878643		Muhammad_Aneeq	Sure Bet (CEOI17_sure)	C++17	0 / 100	0 ms	456 KiB

sure

/*
بسم الله الرحمن الرحيم
Author:
                          (:Muhammad Aneeq:)
*/
#pragma GCC optimize("O2")
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
#define ld long double
inline void solve()
{
  int n;
  cin>>n;
  ld a[n],b[n];
  for (int i=0;i<n;i++)
    cin>>a[i]>>b[i];
  sort(a,a+n);
  sort(b,b+n);
  reverse(b,b+n);
  reverse(a,a+n);
  ld ans=0;
  int i=0,j=0;
  ld sa=0,sb=0;
  while (i<n||j<n)
  {
    if (i==n||sa>sb)
      sb+=b[j++];
    else
      sa+=a[i++];
    ans=max(ans,min(sb-(i+j),sa-(i+j)));
  }
  printf("%.4lf\n",(double)ans);
}
int main()
{
  ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
        solve();
}

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