Submission #865391

#	Time	Username	Problem	Language	Result	Execution time	Memory
865391		vjudge1	Sure Bet (CEOI17_sure)	C++17	0 / 100	1 ms	2396 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;
pair<ld,ld>a[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].first >> a[i].second;
	}
	ld mx = 0;
	for(int i = 0 ; i <= pow(4,n) ; i ++){
		ld one = 0,sec = 0,cnt = 0;
		for(int j = 0 ; j < n ; j ++){
			int calc = get(i,j);
			if(calc!=0){
				if(calc == 1){
					one+=a[j + 1].first;
				}
				else if(calc == 2){
					sec += a[j + 1].second;
				}
				else{
					sec += a[j + 1].second,one += a[j + 1].first;
					cnt++;
				}
				cnt++;
			}
		}
		mx = max(mx,min(one,sec) - cnt);
	}
	cout <<fixed << setprecision(9)<< mx;
}

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