제출 #465233

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
465233		dattranxxx	Detecting Molecules (IOI16_molecules)	C++11	9 / 100	1 ms	204 KiB

molecules

/*
 * Author :  shora
 */
#include <bits/stdc++.h>
#define print(_v) for (auto &_ : _v) {cerr << _ << ' ';} cerr << endl;
#include "molecules.h"
using namespace std;
using ll = long long;
const int oo = 1e9;
const int N = 1e4, U = 1e4;
int dp[U + 1];
int n;
vector<int> find_subset(int l, int u, vector<int> a) {
	n = a.size();
	a.insert(a.begin(), 0);
	sort(a.begin() + 1, a.end());
	vector<int> pre(n+1), suf(n+1);
	for (int i = 1; i <= n; ++i) {
		pre[i] = pre[i-1] + a[i];
		suf[i] = suf[i-1] + a[n-i+1];
	}
	vector<int> res;
	for (int k = 1; k <= n; ++k) {
		if (l <= suf[k] && pre[k] <= u) {
			for (int i = 0; i <= k; ++i) if (l <= pre[i] + suf[k-i] && pre[i] + suf[k-i] <= u) {
				int sum = 0;
				for (int j = 1; j <= i; ++j) res.push_back(j-1), sum += a[j];
				for (int j = 1; j <= k-i; ++j) res.push_back(n-j), sum += a[n-j+1];
				assert(l <= sum && sum <= u);
				return res;
			}
		}
	}
	return res;
}

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