Submission #520150

#	Time	Username	Problem	Language	Result	Execution time	Memory
520150		tost_one_love	Sure Bet (CEOI17_sure)	C++14	100 / 100	82 ms	5180 KiB

sure

#include <bits/stdc++.h>
  
#define endl "\n"
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define sz size()
#define rep(i,k,n) for(int i = k ; i <= n ; ++i)
#define per(i,k,n) for(int i = k ; i >= n ; --i)
#define YOSIK() ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define all(x) x.begin(),x.end()
#define fr(x) freopen(x".in","r",stdin),freopen(x".out","w",stdout)
#define toqta return 0
#define PERMUTE next_permutation
#define no cout<<"No"<<endl;
#define yes cout<<"Yes"<<endl;
#define a() a + 1, a + n + 1  
 
using namespace std;
 
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse,-fgcse-lm")
#pragma GCC optimize("-ftree-pre,-ftree-vrp")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#pragma GCC optimize("unroll-loops")
 
   
typedef long long ll;
typedef unsigned long long ull;
typedef string S;
typedef double ld;
typedef long double lld;
  
const int N = 1e6 + 17;
const int modd = 1e9 + 7;
const ll INF = 1e18 - 19;
const int P = 37;
const ll NN = 1e7 + 17;
const ld eps = 1e-19;
const double pi = 3.141592653589793238462643383279 ;
   
 
bool sortbysec(const pair<int,int> &a, const pair<int,int> &b){
    return (a.second < b.second);
}
 
void pre (ll a) {
    cout << fixed << setprecision(a);
    return;
}
 
ll n;
double x[N], y[N], dpx[N], dpy[N];
double mx;
bool ok = 0;	
inline void Solution (/*Nuraly Serikbay*/) {
	cin >> n;
	for (int i = 1; i <= n; ++ i) {
		cin >> x[i] >> y[i];
	}
	sort (x + 1, x + n + 1, greater < double > ());
	sort (y + 1, y + n + 1, greater < double > ());
	for (ll i = 1; i <= n; ++ i){
		dpx[i] = x[i] + dpx[i - 1];
		dpy[i] = y[i] + dpy[i - 1];
	}
	ll i = 0, j = 0;
	double sum = 0, sum1 = 0;
	while  (i <= n and j <= n) {
		sum = dpx[i];
		sum1 = dpy[j];
		if (sum < sum1){
			i ++;
		}else
			j ++;
		sum = dpx[i];
		sum1 = dpy[j];
		mx = max (mx, min (sum - i - j, sum1 - i - j));
	}
	while (i <= n){
		i ++;
		sum = dpx[i];
		sum1 = dpy[j];
		mx = max (mx, min (sum - i - j, sum1 - i - j));
	}
	while (j <= n){
		j ++;
		sum = dpx[i];
		sum1 = dpy[j];
		mx = max (mx, min (sum - i - j, sum1 - i - j));
	}
	pre(4);
	cout << mx;	
	return;
}
 
 
int main () {
	YOSIK();
	Solution ();
	exit (0);
}

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