Submission #1086942

#	Time	Username	Problem	Language	Result	Execution time	Memory
1086942		ZeroCool	Sure Bet (CEOI17_sure)	C++14	100 / 100	63 ms	5240 KiB

sure

#include <bits/stdc++.h>

using namespace std;

#define ar array
#define int long long
#define ld long double
#define crash assert(69 == 420)

const int MOD = 1e9 + 7;
const int INF = 1e17;
const int N = 2e5  + 20;
const int LOG = 20;


signed main(){ios_base::sync_with_stdio(false);cin.tie(0);
	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);
	sort(B, B + n);
	reverse(A, A + n);
	reverse(B, B + n);
	ld ans = 0;
	ld x = 0, y = 0;
	int i = 0,j = 0;
	while(i < n || j < n){
		if(i < n && (j == n || x < y))x += A[i++];
		else y += B[j++];
		ans = max(ans, min(x, y) - i - j);
		//cout<<i<<" "<<j<<endl;
	}
	cout<<fixed<<setprecision(4)<<ans;
}

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