Submission #891147

#	Time	Username	Problem	Language	Result	Execution time	Memory
891147		vjudge1	Sure Bet (CEOI17_sure)	C++17	0 / 100	1 ms	344 KiB

sure

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

#define x first
#define y second
#define ll long long
#define ull unsigned long long
#define ld long double
#define pf push_front
#define pb push_back
#define mp make_pair
#define all(v) v.begin(), v.end()

void boost(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);
	return;
}

//ull binpow(ull p, int i){
//	if(i==0) return 1;
//	else if(i==1) return p;
//	else if(i%2==0) return binpow(p*p,i/2);
//	else return binpow(p*p,i/2)*p;
//}

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,greater<double>());
	sort(b,b+n,greater<double>());
	ld ans=0;
	int p1=1,p2=1;
	ld suma=a[0],sumb=b[0];
	while(p1<n&&p2<n){
		if(suma>sumb){
			sumb+=b[p2];
			p2++;
		}
		else{
			suma+=a[p1];
			p1++;
		}
		ans=max(ans,min(suma,sumb)-p1-p2);
	}
	cout<<setprecision(15)<<ans;
	return;
}

int main(){
	boost();
	int t=1;
//	cin>>t;
	while(t--) solve();
	return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 40