Submission #52691

#	Time	Username	Problem	Language	Result	Execution time	Memory
52691		snat123	Sure Bet (CEOI17_sure)	C++14	20 / 100	2 ms	736 KiB

sure

#include<bits/stdc++.h>
 
using namespace std;
 
double a[100001], b[100001];
 
int main(){
	//ios_base::sync_with_stdio(false);
	//cin.tie(NULL);
	//ifstream cin;
	//ofstream cout;
	//cin.open("input.txt");
	//cout.open("output.txt");
    int n;
    cin >> n;
    for(int i=0; i<n; i++) cin >> a[i] >> b[i];
    sort(a, a+n);
	sort(b, b+n);
	int i=n-1, j=n-1, li=-1, lj=-1;
	double x=0.0, y=0.0, res=0.0;
	while(i>=0 || j>=0){
		if(i<0 || x>y) y+=b[j--];
		else if(i>=0 )x+=a[i--];
		else break;
		res=max(res, min(x, y)-(n-i)-(n-j)+2);
		//cout << i << " " << j << endl;
	}
	cout << fixed << setprecision(4) << res;
	//cin.close();
	//cout.close();
    return 0;
} 

Compilation message (stderr)

sure.cpp: In function 'int main()':
sure.cpp:19:20: warning: unused variable 'li' [-Wunused-variable]
  int i=n-1, j=n-1, li=-1, lj=-1;
                    ^~
sure.cpp:19:27: warning: unused variable 'lj' [-Wunused-variable]
  int i=n-1, j=n-1, li=-1, lj=-1;
                           ^~

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