Submission #65315

#	Time	Username	Problem	Language	Result	Execution time	Memory
65315		zubec	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	83 ms	31832 KiB

molecules

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

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    vector <pair<int, int> > vec;
    for (int i = 0; i < w.size(); i++){
        vec.push_back({w[i], i});
    }
    int needL = -1, needR = -1;
    sort(vec.begin(), vec.end());
    ll sum = 0;
    int curL = 0;
    for (int i = 0; i < vec.size(); i++){
        sum += vec[i].first;
        while(sum > u){
            sum -= vec[curL].first;
            curL++;
        }
        if (l <= sum && sum <= u){
            needL = curL;
            needR = i;
        }
    }
    if (needL == -1)
        return {};
    vector <int> ansvec;
    for (int i = needL; i <= needR; i++)
        ansvec.push_back(vec[i].second);
    sort(ansvec.begin(), ansvec.end());
    return ansvec;

}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:8:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < w.size(); i++){
                     ~~^~~~~~~~~~
molecules.cpp:15:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < vec.size(); i++){
                     ~~^~~~~~~~~~~~

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