Submission #680376

#	Time	Username	Problem	Language	Result	Execution time	Memory
680376		Nahian9696	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	54 ms	6180 KiB

molecules

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

#define f0(i, n) for(int i = 0; i < n; i++)
#define f1(i, n) for(int i = 1; i <= n; i++)

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    vector<pair<int, int>> vp;
    f0(i, w.size()) {
        vp.push_back({w[i], i});
    }
    sort(vp.begin(), vp.end());

    long long sum = 0, n = w.size();
    vector<int> ans;
    for (long long i = 0; i < n; i++) {
        if (sum + vp[i].first <= u) {
            sum += vp[i].first;
            ans.push_back(vp[i].second);
        } else {
            if(sum >= l) {
                return ans;
            } else {
                int nn = ans.size();
                f1(j, nn) {
                    sum -= vp[nn - j].first;
                    sum += vp[n - j].first;
                    ans[nn - j] = vp[n - j].second;
                    if(sum >= l && sum <= u) {
                        return ans;
                    }
                }
                return vector<int>();
            }
            break;
        }
    }
    if(sum >= l && sum <= u)
        return ans;
    return vector<int>();
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:5:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define f0(i, n) for(int i = 0; i < n; i++)
......
   10 |     f0(i, w.size()) {
      |        ~~~~~~~~~~~                 
molecules.cpp:10:5: note: in expansion of macro 'f0'
   10 |     f0(i, w.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