Submission #865404

#	Time	Username	Problem	Language	Result	Execution time	Memory
865404		vjudge1	Sure Bet (CEOI17_sure)	C++17	0 / 100	1 ms	4696 KiB

sure

#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <fstream>
#include <unordered_map>
using namespace std;

typedef long long ll;
typedef long double ld;

#define all(x) x.begin(),x.end()
#define pb push_back
#define ent "\n"

const int maxn = (int)3e5 + 13;
const ll inf = (long long)1e18 + 20;
const int mod = (int)1e9 + 7;

int n;
ld a[maxn],b[maxn];
ld pref[maxn];

int get(int x,int y){
	int ans = x / pow(4,y);
	ans %= 4;
	return ans;
}

void solve(){
	cin >> n;
	for(int i = 1 ; i <= n ; i ++){
		cin >> a[i] >> b[i];
	}
	sort(a + 1,a + n + 1);
	sort(b + 1,b + n + 1);
	ld mx =0 ,sum = 0,sum1 = 0;
	for(int i = n ; i >= 1 ; i --){
		sum += a[i];
		mx = max(mx,min(sum,b[n]) - (n - i + 2));
	}
	for(int i = n ; i >= 1 ; i --){
		sum1 += b[i];
		mx = max(mx,min(sum1,a[n]) - (n - i + 2));
	}
	cout << fixed << mx << ent;
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t --){
		solve();
	}
	return 0;
}

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