Submission #373096

#	Time	Username	Problem	Language	Result	Execution time	Memory
373096		mariowong	Sure Bet (CEOI17_sure)	C++14	100 / 100	121 ms	5356 KiB

sure

#include <bits/stdc++.h>
using namespace std;

int n,pt1,pt2;
long double sum1,sum2,a[100005],b[100005],ans; 
int main(){
	ios::sync_with_stdio(false);
	cin >> n;
	for (int i=1;i<=n;i++){
		cin >> a[i] >> b[i];
	}
	sort(a+1,a+1+n); sort(b+1,b+1+n);
	reverse(a+1,a+1+n); reverse(b+1,b+1+n);
	while (pt1 < n || pt2 < n){
		if (pt2 == n || (pt1 < n && sum1 < sum2)){
			pt1++;
			sum1+=a[pt1];
		}
		else
		{
			pt2++;
			sum2+=b[pt2];
		}

		ans=max(ans,min(sum1,sum2)-pt1-pt2);
	}
	cout << fixed << setprecision(4) << ans << "\n";
	return 0;
}	

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