Submission #1322688

#	Time	Username	Problem	Language	Result	Execution time	Memory
1322688		ppmn_6	Detecting Molecules (IOI16_molecules)	C++20	100 / 100	45 ms	2716 KiB

molecules

#include "bits/stdc++.h"
#include "molecules.h"
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
 
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
 
// https://codeforces.com/blog/entry/79148
class Timer: chrono::high_resolution_clock {
    const time_point start_time;
public:
    Timer(): start_time(now()) {}
    rep elapsed_time() const {
		return chrono::duration_cast<chrono::milliseconds>(now() - start_time).count();
	}
} timer;

vector<int> find_subset(int l_, int r_, vector<int> w) {
	vector<int> ord(w.size());
	iota(ord.begin(), ord.end(), 0);
	sort(ord.begin(), ord.end(), [&] (int x, int y) {
		return w[x] < w[y];
	});
	sort(w.begin(), w.end());
	int lb = w.size() - 1, rb = lb;
	ll sum = w.back(), l = l_, r = r_;
	vector<int> ans;
	while (true) {
		if (sum >= l && sum <= r) {
			for (int i = lb; i <= rb; i++) {
				ans.push_back(ord[i]);
			}
			return ans;
		}
		if (sum > r) {
			sum -= ll(w[rb]);
			rb--;
		}
		if (sum < l) {
			if (!lb) {
				return ans;
			}
			lb--;
			sum += ll(w[lb]);
		}
	}
}

Compilation message (stderr)

molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

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