Submission #155620

#	Time	Username	Problem	Language	Result	Execution time	Memory
155620		lukameladze	Sure Bet (CEOI17_sure)	C++14	100 / 100	254 ms	2516 KiB

sure

#include<bits/stdc++.h>
using namespace std;
int n,j,j11;
double a[100005],b[100005],l,r,ans,w;
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	cin>>a[i]>>b[i];
	
	sort(a+1,a+n+1);
	sort(b+1,b+n+1);
	j=n;
	j11=n;
	while(true)
	{
		w=min(l,r);
		ans=max(w,ans);
		if(l>=r)
		{
		   if(j11<1)
		   break;
		   r+=b[j11]-1;
		   j11--;
		   l--;
		}
		else
		{
			if(j<1)  break;
			l+=a[j]-1;
			j--;
			r--;	
		}
	}
	printf("%.4lf",(double)ans);
}

• Subtask 1: 20 / 20
• Subtask 2: 40 / 40
• Subtask 3: 40 / 40