Submission #52633

#	Time	Username	Problem	Language	Result	Execution time	Memory
52633		snat123	Sure Bet (CEOI17_sure)	C++14	0 / 100	2 ms	484 KiB

sure

#include<bits/stdc++.h>
 
using namespace std;
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    long double tmp;
    long long a[n], b[n];
    for(int i=0; i<n; i++) {
    	cin >> tmp;
    	a[i]=tmp*10000;
    	cin >> tmp;
    	b[i]=tmp*10000;
    }
    sort(a, a+n);
	sort(b, b+n);
	int i=n-1, j=n-1;
	long long x=0, y=0, res=0;
	while(i>=0 && j>=0){
		if(x>=y){
			y+=b[j--];
			x-=10000;
			y-=10000;
			res=max(res, min(x, y));
			
		}
		else{
			x+=a[i--];
			y-=10000;
			x-=10000;
			res=max(res, min(x, y));
		}
	}
	tmp=1.0*res/10000;
	cout << fixed << setprecision(4) << tmp;
    return 0;
} 

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