Submission #299612

#	Time	Username	Problem	Language	Result	Execution time	Memory
299612		Valee	Detecting Molecules (IOI16_molecules)	C++14	0 / 100	1 ms	384 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>

#define ll long long

using namespace std;

vector<int> find_subset(int l, int u, vector<int> v) {
	bool ok = false;
	vector<int>ans;
	int n = (int)v.size();
	sort(v.begin(), v.end());
	int lb = 1, rb = n, lans = 0, rans = 0, sz=0;
	while (lb < rb && !ok){
		ll m = (lb+rb)>>1, sz = 0, sum = 0;
		for (int i = 0; i < n; i++){
			sz++;
			if (sz <= m) sum += v[i];
			else sum += v[i]-v[i-m];
			if (l <= sum && sum <= u){
				lans = max(0LL, i-m+1); rans = i;
				ok = true;
				break;
			}
		}
		if (sum > u) rb = m;
		else lb = m+1;
	}
	if (ok)
		for (int i = lans; i <= rans; i++)
			ans.push_back(i);
	return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:13:42: warning: unused variable 'sz' [-Wunused-variable]
   13 |  int lb = 1, rb = n, lans = 0, rans = 0, sz=0;
      |                                          ^~

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