Submission #1042765

#	Time	Username	Problem	Language	Result	Execution time	Memory
1042765		Zicrus	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	31 ms	7276 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
using namespace std;

typedef long long ll;

vector<int> find_subset(int l, int u, vector<int> w) {
    ll n = w.size();
    vector<pair<ll, ll>> s(n);
    for (int i = 0; i < n; i++) {
        s[i] = {w[i], i};
    }
    sort(s.begin(), s.end());

    ll tot = 0;
    vector<int> res;
    for (auto &e : s) {
        if (tot + e.first <= u) {
            tot += e.first;
            res.push_back(e.second);
        }
        else break;
    }

    ll id = n-1;
    ll resId = 0;
    while (tot < l && id >= res.size() && resId < res.size()) {
        tot += s[id].first - s[resId].first;
        res[resId] = s[id].second;
        id--; resId++;
    }

    return tot < l ? vector<int>() : res;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:27:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     while (tot < l && id >= res.size() && resId < res.size()) {
      |                       ~~~^~~~~~~~~~~~~
molecules.cpp:27:49: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     while (tot < l && id >= res.size() && resId < res.size()) {
      |                                           ~~~~~~^~~~~~~~~~~~

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