Submission #679704

#	Time	Username	Problem	Language	Result	Execution time	Memory
679704		sentheta	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	308 KiB

molecules

#include "molecules.h"
// author : sentheta aka vanwij
#include<iostream>
#include<iomanip>
#include<algorithm>
#include<cassert>
#include<random>
#include<chrono>
#include<cmath>
#include<string>
#include<vector>
#include<bitset>
#include<queue>
#include<stack>
#include<map>
#include<set>
using namespace std;

#define Int long long
#define V vector
#define pii pair<int,int>
#define ff first
#define ss second

#define rand() (uniform_int_distribution<int>(0,1<<30)(rng))
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

#define pow2(x) (1LL<<(x))
#define msb(x) (63-__builtin_clzll(x))
#define bitcnt(x) (__builtin_popcountll(x))

#define nl '\n'
#define _ << ' ' <<
#define all(x) (x).begin(), (x).end()
#define rep(i,a,b) for(int i = (int)(a); i < (int)(b); i++)
#define dbg(x) if(1) cout << "?" << #x << " : " << (x) << endl << flush;


int n;
V<int> ans;

V<int> find_subset(int l,int r,V<int> a){
	n = a.size();

	V<int> ord;
	rep(i,0,n) ord.push_back(i);
	sort(all(ord),[&](int i,int j){
		return a[i]<a[j];
	});

	int sum = 0;
	int i=0, j=n-1;
	rep(i,0,n){
		if(sum+a[i]<=r){
			sum += a[i];
			ans.push_back(i);
		}
	}

	while(sum<l && i<j){
		sum += a[j]-a[i];
		j--; i++;
		ans[i] = j;
	}
	
	if(l<=sum && sum<=r){
		for(int& i : ans) i++;
		return ans;
	}
	return {};
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31