Submission #374732

#	Time	Username	Problem	Language	Result	Execution time	Memory
374732		YJU	Sure Bet (CEOI17_sure)	C++14	100 / 100	146 ms	5456 KiB

sure

#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef long double ld;
const ll N=1e5+5;
const ll MOD=1e9+7;
#define REP(i,n) for(int i=0;i<n;++i)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second

ll n;
ld a,b,ans;
priority_queue<ld> pqa,pqb;

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n;
	REP1(i,n){
		cin>>a>>b;
		pqa.push(a);pqb.push(b);
	}
	a=b=0;
	REP1(i,2*n){
		if(pqa.empty()||pqb.empty()){
			if(!pqa.empty()){
				a+=pqa.top();pqa.pop();
			}else{
				b+=pqb.top();pqb.pop();
			}
		}else{
			if(a<=b){
				a+=pqa.top();pqa.pop();
			}else{
				b+=pqb.top();pqb.pop();
			}
		}
		ans=max(ans,min(a,b)-i);
	}
	cout<<fixed<<setprecision(4)<<ans<<"\n";
	return 0;
}

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